Pub Date : 2023-06-19DOI: 10.1080/15324982.2023.2224272
Reynaldo Teodoro de Fatima, J. S. Nóbrega, G. S. de Lima, L. A. A. Soares, M. B. Pereira, J. Ribeiro, H. Gheyi, W. E. Pereira
{"title":"Seaweed extract biofertilizer modulates scarlet eggplant tolerance to salt stress","authors":"Reynaldo Teodoro de Fatima, J. S. Nóbrega, G. S. de Lima, L. A. A. Soares, M. B. Pereira, J. Ribeiro, H. Gheyi, W. E. Pereira","doi":"10.1080/15324982.2023.2224272","DOIUrl":"https://doi.org/10.1080/15324982.2023.2224272","url":null,"abstract":"","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82997474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract In arid and semi-arid areas, plant growth and survival are directly related to the soil water content. The soil water content is an important parameter for monitoring land degradation. A better understanding of how forests use soil water is crucial for the quantification how the terrestrial hydrologic cycle adapts to forestry practices and regional climate anomalies in these areas. This study investigated the variation of the water balance under different precipitation patterns (including soil water redistribution patterns under water stress and extreme rainstorms) under three common tree species in a mountainous area of Beijing were investigated. The results showed that soil water storage in the 80–150 cm layer played an important role for the ability of Platycladus orientalis (L.) Franco and Quercus variabilis Blume to survive drought during a dry season. Compared to P. orientalis and Q. variabilis, the duration of water stress was shortest for Pinus tabulaeformis Carr. (15 months). P. tabulaeformis had a higher ability to utilize top soil water but showed a less balanced use of soil water in each soil layer. It also had the strongest ability to replenish groundwater through deep seepage. P. tabulaeformis may resist drought by transferring water to deeper soil horizons, where it is less susceptible to evaporation and where moisture can be temporarily stored. P. orientalis and Q. variabilis are more dependent on soil water storage in response to water stress conditions.
{"title":"Soil water migration under three tree species in response to water stress and extreme rainstorms","authors":"Zhenyao Zhang, Si-Hong Chen, Liangyi Rao, Xinxiao Yu, Shi-long Hao","doi":"10.1080/15324982.2023.2218297","DOIUrl":"https://doi.org/10.1080/15324982.2023.2218297","url":null,"abstract":"Abstract In arid and semi-arid areas, plant growth and survival are directly related to the soil water content. The soil water content is an important parameter for monitoring land degradation. A better understanding of how forests use soil water is crucial for the quantification how the terrestrial hydrologic cycle adapts to forestry practices and regional climate anomalies in these areas. This study investigated the variation of the water balance under different precipitation patterns (including soil water redistribution patterns under water stress and extreme rainstorms) under three common tree species in a mountainous area of Beijing were investigated. The results showed that soil water storage in the 80–150 cm layer played an important role for the ability of Platycladus orientalis (L.) Franco and Quercus variabilis Blume to survive drought during a dry season. Compared to P. orientalis and Q. variabilis, the duration of water stress was shortest for Pinus tabulaeformis Carr. (15 months). P. tabulaeformis had a higher ability to utilize top soil water but showed a less balanced use of soil water in each soil layer. It also had the strongest ability to replenish groundwater through deep seepage. P. tabulaeformis may resist drought by transferring water to deeper soil horizons, where it is less susceptible to evaporation and where moisture can be temporarily stored. P. orientalis and Q. variabilis are more dependent on soil water storage in response to water stress conditions.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"2 1","pages":"514 - 534"},"PeriodicalIF":1.4,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88540494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-08DOI: 10.1080/15324982.2023.2217778
Omid Noroozi, A. A. Safari Sinegani, M. Farhangi
Abstract Organic and inorganic amendments are routinely applied to ameliorate soil conditions in semi-arid regions. This study aimed to examine the unsaturated transport of nalidixic acid-resistance Escherichia coli (E. coli NAR) in soil amended by cow manure (CM) and natural zeolite (NZ). Two levels of NZ (5 and 15% w/w) were added to a loam soil containing 5% w/w CM and incubated for 60 days. Then, the soil mixtures were poured into cylinders (3.6 × 15 cm) and a pulse (0.1 pore volume) of bacteria suspension (106 Cell mL−1) was added on top of the soil columns and leaching experiments were conducted at a steady-state, unsaturated flow condition and filtration coefficient (λf ), relative adsorption index (SR ), maximum depth of bacteria transport (Zmax ), average (Cav ) and cumulative cell density (Ccum ) were calculated. CM and NZ application significantly increased the peak density, Z max , C av , and C cum of E. coli NAR. The Cav , and Ccum of E. coli NAR in both 5 and 15% NZ containing mixtures were about 1 and 2-fold higher compared to the control. CM and NZ addition to soil decreased the filtration coefficient (λf ) and relative adsorption index (SR ) compared to the control. According to our results, we should conclude that the presence of NZ and CM, separately or together, can significantly increase the risk of groundwater contamination and it should be used with prudence.
{"title":"Unsaturated transport of Escherichia coli through disturbed soil column: effect of natural zeolite and cow manure addition","authors":"Omid Noroozi, A. A. Safari Sinegani, M. Farhangi","doi":"10.1080/15324982.2023.2217778","DOIUrl":"https://doi.org/10.1080/15324982.2023.2217778","url":null,"abstract":"Abstract Organic and inorganic amendments are routinely applied to ameliorate soil conditions in semi-arid regions. This study aimed to examine the unsaturated transport of nalidixic acid-resistance Escherichia coli (E. coli NAR) in soil amended by cow manure (CM) and natural zeolite (NZ). Two levels of NZ (5 and 15% w/w) were added to a loam soil containing 5% w/w CM and incubated for 60 days. Then, the soil mixtures were poured into cylinders (3.6 × 15 cm) and a pulse (0.1 pore volume) of bacteria suspension (106 Cell mL−1) was added on top of the soil columns and leaching experiments were conducted at a steady-state, unsaturated flow condition and filtration coefficient (λf ), relative adsorption index (SR ), maximum depth of bacteria transport (Zmax ), average (Cav ) and cumulative cell density (Ccum ) were calculated. CM and NZ application significantly increased the peak density, Z max , C av , and C cum of E. coli NAR. The Cav , and Ccum of E. coli NAR in both 5 and 15% NZ containing mixtures were about 1 and 2-fold higher compared to the control. CM and NZ addition to soil decreased the filtration coefficient (λf ) and relative adsorption index (SR ) compared to the control. According to our results, we should conclude that the presence of NZ and CM, separately or together, can significantly increase the risk of groundwater contamination and it should be used with prudence.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"8 1","pages":"494 - 513"},"PeriodicalIF":1.4,"publicationDate":"2023-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84576959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-23DOI: 10.1080/15324982.2023.2213671
A. Khosravi Mashizi, Mohsen Sharafatmandrad
Abstract Cultural ecosystem services (CESs) are powerful motivators for stakeholders and managers to preserve valuable landscapes. There is little information about CESs and their spatial distribution in arid lands. It is necessary to identify the most important social-ecological drivers of CESs supply to improve coldspot areas in this regard. Seven cultural ecosystem services were quantified based on people’s perception across eight different arid landscapes, in southeast of Iran. A questionnaire was prepared based on landscape photography to interview people using non-proportional quota sampling. Using hotspot analysis, the spatial distribution of cultural services was then examined. CESs’ hotspots were often dispersed in the semi-arid regions (95% of hotspots), whereas coldspots were often dispersed in arid regions (73% of coldspots). The landscape condition, landscape type, and plant traits were the most important ecological drivers of CESs supply (p < 0.05), showing priority regions for conservation or restoration. Woodlands were more successful in providing CESs than rangelands. The two woodland landscapes, i.e., scale-leaved evergreen coniferous and deciduous broad-leaved trees had the most potential for providing CESs. The lowland mixed halophyte shrubs-annual species landscape had the least potential for CESs supply. The education and income (p < 0.05) were the main social drivers of CESs provision, which are effective for restoration of areas with the risk of CESs loss. Our findings provide useful information for planners and managers to understand the potential of different landscapes in providing multiple CESs and to relate them to conservation/restoration plans.
{"title":"Cultural services in arid landscapes. A comparative study based on people’s perception, southeast of Iran","authors":"A. Khosravi Mashizi, Mohsen Sharafatmandrad","doi":"10.1080/15324982.2023.2213671","DOIUrl":"https://doi.org/10.1080/15324982.2023.2213671","url":null,"abstract":"Abstract Cultural ecosystem services (CESs) are powerful motivators for stakeholders and managers to preserve valuable landscapes. There is little information about CESs and their spatial distribution in arid lands. It is necessary to identify the most important social-ecological drivers of CESs supply to improve coldspot areas in this regard. Seven cultural ecosystem services were quantified based on people’s perception across eight different arid landscapes, in southeast of Iran. A questionnaire was prepared based on landscape photography to interview people using non-proportional quota sampling. Using hotspot analysis, the spatial distribution of cultural services was then examined. CESs’ hotspots were often dispersed in the semi-arid regions (95% of hotspots), whereas coldspots were often dispersed in arid regions (73% of coldspots). The landscape condition, landscape type, and plant traits were the most important ecological drivers of CESs supply (p < 0.05), showing priority regions for conservation or restoration. Woodlands were more successful in providing CESs than rangelands. The two woodland landscapes, i.e., scale-leaved evergreen coniferous and deciduous broad-leaved trees had the most potential for providing CESs. The lowland mixed halophyte shrubs-annual species landscape had the least potential for CESs supply. The education and income (p < 0.05) were the main social drivers of CESs provision, which are effective for restoration of areas with the risk of CESs loss. Our findings provide useful information for planners and managers to understand the potential of different landscapes in providing multiple CESs and to relate them to conservation/restoration plans.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"27 1","pages":"619 - 636"},"PeriodicalIF":1.4,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86292669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-04DOI: 10.1080/15324982.2023.2204462
E. Bijanzadeh, R. Naderi, V. Barati
Absract To investigate the water uptake, anatomical and biochemical changes of sorghum, three genotypes including grain sorghum [Sorghum bicolor (L.) Moench subsp. bicolor], Sudan grass [Sorghum bicolor (L.) Moench subsp. drummondii (Steud.) de Wet ex Davidse] and Johnson grass [Sorghum halepense (L.) Pers.] were subjected to polyethylene glycol (PEG 60000)-induced drought stress (PEG 60000) at 0, −0.15, and −0.3 MPa levels, hydroponically. In all genotypes, stele diameter decreased as osmotic potential of the medium decreased and the largest stele diameter (247 µm) was observed in Johnson grass at control and declined to 196 µm under −0.3 MPa PEG. Drought affected the diameter of peripheral metaxylem (PMX) and central metaxylem (CMX), negatively. The number of PMX and CMX in Johnson grass was 36 and 200% more than in grain sorghum under −0.3 MPa PEG, respectively. In all genotypes, chlorophyll a and b declined under drought, but in Johnson grass, it only decreased 25 and 29%, respectively. Johnson grass had the highest total chlorophyll content, while carotenoid content was stable under drought stress in this genotype. Drought stress increased catalase and peroxidase activities but decreased relative water content (RWC) and hydraulic conductivity (hc). Under drought, the higher seedling dry weight and root to shoot ratio in Johnson grass might be related to higher hc, total chlorophyll content, and RWC. Moreover, Johnson grass showed less water loss and more efficiency in water uptake under induced drought stress; and it could be attributed to the larger stele diameter, number, and diameter of PMX, substantiating their roles in drought adaptation.
摘要为研究籽型高粱(sorghum bicolor (L.))等3种基因型高粱的水分吸收、解剖和生化变化。Moench无性系种群。双色]，苏丹草[高粱双色(L.)]Moench无性系种群。drummondii (Steud.) de Wet ex Davidse]和Johnson草[高粱(L.)]珀耳斯。]受到聚乙二醇(PEG 60000)诱导的干旱胁迫(PEG 60000)在0，- 0.15和- 0.3 MPa水平，水培。在所有基因型中，随着介质渗透电位的降低，柱石直径减小，在对照条件下，约翰逊草的柱石直径最大，为247µm，在−0.3 MPa PEG条件下，柱石直径减小到196µm。干旱对外缘和中央果质部的直径均有负向影响。在−0.3 MPa PEG条件下，强生草中PMX和CMX的数量分别比高粱多36%和200%。所有基因型叶绿素a和b在干旱条件下均呈下降趋势，但江蓠的叶绿素a和b分别下降了25%和29%。干旱胁迫下，江蓠总叶绿素含量最高，类胡萝卜素含量稳定。干旱胁迫提高了过氧化氢酶和过氧化物酶活性，但降低了相对含水量(RWC)和导水率(hc)。干旱条件下，江蓠幼苗干重和根冠比较高可能与较高的hc、总叶绿素含量和RWC有关。干旱胁迫下，江蓠水分流失少，吸水效率高;这可能是由于PMX的石柱直径、数量和直径更大，从而证实了它们在干旱适应中的作用。
{"title":"Water uptake, anatomical, and biochemical changes of sorghum genotypes subjected to polyethylene glycol-induced drought stress","authors":"E. Bijanzadeh, R. Naderi, V. Barati","doi":"10.1080/15324982.2023.2204462","DOIUrl":"https://doi.org/10.1080/15324982.2023.2204462","url":null,"abstract":"Absract To investigate the water uptake, anatomical and biochemical changes of sorghum, three genotypes including grain sorghum [Sorghum bicolor (L.) Moench subsp. bicolor], Sudan grass [Sorghum bicolor (L.) Moench subsp. drummondii (Steud.) de Wet ex Davidse] and Johnson grass [Sorghum halepense (L.) Pers.] were subjected to polyethylene glycol (PEG 60000)-induced drought stress (PEG 60000) at 0, −0.15, and −0.3 MPa levels, hydroponically. In all genotypes, stele diameter decreased as osmotic potential of the medium decreased and the largest stele diameter (247 µm) was observed in Johnson grass at control and declined to 196 µm under −0.3 MPa PEG. Drought affected the diameter of peripheral metaxylem (PMX) and central metaxylem (CMX), negatively. The number of PMX and CMX in Johnson grass was 36 and 200% more than in grain sorghum under −0.3 MPa PEG, respectively. In all genotypes, chlorophyll a and b declined under drought, but in Johnson grass, it only decreased 25 and 29%, respectively. Johnson grass had the highest total chlorophyll content, while carotenoid content was stable under drought stress in this genotype. Drought stress increased catalase and peroxidase activities but decreased relative water content (RWC) and hydraulic conductivity (hc). Under drought, the higher seedling dry weight and root to shoot ratio in Johnson grass might be related to higher hc, total chlorophyll content, and RWC. Moreover, Johnson grass showed less water loss and more efficiency in water uptake under induced drought stress; and it could be attributed to the larger stele diameter, number, and diameter of PMX, substantiating their roles in drought adaptation.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"8 1","pages":"554 - 576"},"PeriodicalIF":1.4,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84973166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-17DOI: 10.1080/15324982.2023.2190047
Sun Zenghui, Zizhong Li, Zhang Ruiqing, Han Jichang, Wang Huanyuan, Yan Jiakun
Abstract Soil water content (SWC) is an important but highly variable element of hydrological cycle. Understanding SWC spatial variability at the crop row-scale is critical for improving management of water, soils, and crops. This study investigated the SWC spatial variability at the row scale in corn (Zea mays L.) after the fields were treated with straw mulch (FPM) or without straw mulch (FP) in 2013 and 2014. The spatial variability in SWC was assessed from five horizontal measurement points (MPs), at 10-, 30-, 50-, and 70-cm depths using time domain reflectometry. The spatial variability in SWC among the five MPs was statistically significant for 19–75% of sampling dates and was most often different between the two treatments at 10- and 30-cm depths. Straw mulch most strongly affected the spatial variability of SWC at a 10-cm depth, but this effect differed between the two years. With respect to SWC, the FP treatment exhibited a higher range and lower maximum standard deviation and coefficient of variation compared to those of the FPM treatment. In the majority of sampling dates (more than 60%), the most representative SWC estimates were obtained at MPs positioned at one-quarter into the inter-row gap.
摘要土壤含水量是水循环过程中一个重要但变化很大的要素。了解作物行尺度的SWC空间变异性对于改善水、土壤和作物管理至关重要。以玉米(Zea mays L.)为研究对象，研究了2013年和2014年秸秆覆盖(FPM)和不秸秆覆盖(FP)对玉米(Zea mays L.) SWC的行尺度空间变异性。利用时域反射法，从10、30、50和70厘米深度的5个水平测量点(MPs)评估SWC的空间变异性。5种MPs中SWC的空间变异性在19-75%的采样日期具有统计学意义，并且在10 cm和30 cm深度两种处理之间最常见的差异。秸秆覆盖对土壤SWC空间变异性的影响在10 cm深度最为强烈，但这种影响在2年之间存在差异。在SWC方面，与FPM处理相比，FP处理表现出更高的范围和更低的最大标准差和变异系数。在大多数采样日期(超过60%)中，最具代表性的SWC估计值是在位于行间间隙四分之一的MPs处获得的。
{"title":"Spatial variability of soil water content at the crop row scale with and without straw mulch inside a corn field in semi-humid Northeastern China","authors":"Sun Zenghui, Zizhong Li, Zhang Ruiqing, Han Jichang, Wang Huanyuan, Yan Jiakun","doi":"10.1080/15324982.2023.2190047","DOIUrl":"https://doi.org/10.1080/15324982.2023.2190047","url":null,"abstract":"Abstract Soil water content (SWC) is an important but highly variable element of hydrological cycle. Understanding SWC spatial variability at the crop row-scale is critical for improving management of water, soils, and crops. This study investigated the SWC spatial variability at the row scale in corn (Zea mays L.) after the fields were treated with straw mulch (FPM) or without straw mulch (FP) in 2013 and 2014. The spatial variability in SWC was assessed from five horizontal measurement points (MPs), at 10-, 30-, 50-, and 70-cm depths using time domain reflectometry. The spatial variability in SWC among the five MPs was statistically significant for 19–75% of sampling dates and was most often different between the two treatments at 10- and 30-cm depths. Straw mulch most strongly affected the spatial variability of SWC at a 10-cm depth, but this effect differed between the two years. With respect to SWC, the FP treatment exhibited a higher range and lower maximum standard deviation and coefficient of variation compared to those of the FPM treatment. In the majority of sampling dates (more than 60%), the most representative SWC estimates were obtained at MPs positioned at one-quarter into the inter-row gap.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"140 1","pages":"473 - 493"},"PeriodicalIF":1.4,"publicationDate":"2023-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86666190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-15DOI: 10.1080/15324982.2023.2188314
André Alisson Rodrigues da Silva, Pedro Francisco do Nascimento Sousa, Geovani Soares de Lima, L. A. A. Soares, H. Gheyi, Luderlândio de Andrade Silva, Josinaldo Lopes Araújo Rocha, Carlos Alberto Vieira de Azevedo
Abstract Application of salicylic acid can enable the use of brackish water in the hydroponic cultivation of okra in arid and semi-arid regions. In this context, the objective of the present study was to evaluate the effect of foliar application of salicylic acid in mitigating the impacts of salt stress on the physiology, growth, and production of “Canindé” okra cultivated in a hydroponic system. The experiment was carried out in a greenhouse, using an NFT—Nutrient Film Technique hydroponic system. A completely randomized design was adopted in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—ECns (2.1, 3.6, 5.1, and 6.6 dS m−1) considered as plots and four concentrations of salicylic acid—SA (0, 1.2, 2.4, and 3.6 mM), considered as subplots, with four replications, each of which consisting of two plants. Foliar application of salicylic acid at a concentration of 1.2 mM attenuated the harmful effects of salt stress on the physiology, growth, and production components of “Canindé” okra cultivated in a hydroponic system with ECns of up to 6.6 dS m−1. Plants cultivated with ECns of 6.6 dS m−1 and salicylic acid at a concentration of 1.2 mM obtained an increase of 11.13% (36.4 g per plant) in total production per plant compared to plants cultivated with the same ECns level and without application of salicylic acid. These results demonstrate that salicylic acid, when supplied by foliar application at adequate concentrations, can act as a signaling molecule and reduce the effects of salt stress on hydroponic okra.
{"title":"Salicylic acid alleviates the effects of salt stress on the physiology, growth, and production of hydroponic okra","authors":"André Alisson Rodrigues da Silva, Pedro Francisco do Nascimento Sousa, Geovani Soares de Lima, L. A. A. Soares, H. Gheyi, Luderlândio de Andrade Silva, Josinaldo Lopes Araújo Rocha, Carlos Alberto Vieira de Azevedo","doi":"10.1080/15324982.2023.2188314","DOIUrl":"https://doi.org/10.1080/15324982.2023.2188314","url":null,"abstract":"Abstract Application of salicylic acid can enable the use of brackish water in the hydroponic cultivation of okra in arid and semi-arid regions. In this context, the objective of the present study was to evaluate the effect of foliar application of salicylic acid in mitigating the impacts of salt stress on the physiology, growth, and production of “Canindé” okra cultivated in a hydroponic system. The experiment was carried out in a greenhouse, using an NFT—Nutrient Film Technique hydroponic system. A completely randomized design was adopted in a split-plot scheme, with four levels of electrical conductivity of the nutrient solution—ECns (2.1, 3.6, 5.1, and 6.6 dS m−1) considered as plots and four concentrations of salicylic acid—SA (0, 1.2, 2.4, and 3.6 mM), considered as subplots, with four replications, each of which consisting of two plants. Foliar application of salicylic acid at a concentration of 1.2 mM attenuated the harmful effects of salt stress on the physiology, growth, and production components of “Canindé” okra cultivated in a hydroponic system with ECns of up to 6.6 dS m−1. Plants cultivated with ECns of 6.6 dS m−1 and salicylic acid at a concentration of 1.2 mM obtained an increase of 11.13% (36.4 g per plant) in total production per plant compared to plants cultivated with the same ECns level and without application of salicylic acid. These results demonstrate that salicylic acid, when supplied by foliar application at adequate concentrations, can act as a signaling molecule and reduce the effects of salt stress on hydroponic okra.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"63 1","pages":"602 - 618"},"PeriodicalIF":1.4,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72685934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-21DOI: 10.1080/15324982.2023.2180456
Shambhavi Srivastava, R. K. Joshi, S. Garkoti
Abstract Semi-arid forests of the Aravalli hills are rich in tree diversity, but plant invasions during the last several decades, especially by Prosopis juliflora (Sw.) DC. have affected the vegetation structure and biogeochemical cycles of these forests. We compared carbon (C), and nitrogen (N) concentrations in the fine root, leaf, and soil physicochemical properties under the invasive tree species, P. juliflora, and native, Acacia nilotica (L.) Willd. ex Delile, to evaluate the effect of invasive tree species on total soil C, N concentrations, and C:N ratios. We also analyzed the soil samples for soil organic C (SOC), total N (TN), soil microbial biomass C (MBC), and soil microbial biomass N (MBN) and stocks. Soil physical and chemical properties under the invasive P. juliflora and native A. nilotica trees varied significantly (p < 0.05). The C and N concentrations in the fine root, leaf, soil SOC, TN and MBC, and MBN concentrations were significantly (p < 0.05) higher in P. juliflora than A. nilotica while C:N ratio, and bulk density, exhibited the opposite trends. The C concentrations followed the order fine root > leaf > soil > microbial biomass while for N concentration and C:N ratios, it was leaf > fine root > soil > microbial biomass. The invasive P. juliflora had a lower C:N ratio in leaf, fine root, and soil than the native A. nilotica. The average rhizosphere soil, fine root, and leaf C concentration for P. juliflora were 36.72 ± 0.84 g kg−1, 547.84 ± 18.56 g kg−1, and 534.77 ± 5.12 g kg−1, respectively and were 1.42, 1.16 and 1.04 times higher than for A. nilotica. Similarly, P. juliflora average rhizosphere soil, fine root, and leaf N concentrations were 4.37 ± 0.11 g kg−1, 19.96 ± 0.94 g kg−1, and 23.18 ± 0.84 g kg−1, respectively, and 2.0, 1.27, and 1.85 times, respectively, higher than for A. nilotica. Further, the MBC:SOC or MBN:TN ratios were higher in native A. nilotica, likely indicating higher efficiency of microbes in soil C decomposition. Together, our results indicate that invasive P. juliflora altered the ecosystem processes and increased the soil and microbial C, and N stocks compared to native A. nilotica in the semi-arid forests of the Aravalli hills.
摘要/ Abstract摘要:Aravalli丘陵半干旱森林树木多样性丰富，但近几十年来植物的入侵，尤其是毛豆(Prosopis juliflora, Sw.)。直流。影响了这些森林的植被结构和生物地球化学循环。我们比较了入侵树种胡丽萍(P. juliflora)和本土树种尼罗金合欢(Acacia nilotica)细根、叶片中的碳(C)和氮(N)浓度以及土壤理化性质。Willd。为了评价入侵树种对土壤总碳、氮浓度和碳氮比的影响。对土壤有机碳(SOC)、全氮(TN)、土壤微生物生物量C (MBC)、土壤微生物生物量N (MBN)和存量进行了分析。入侵刺槐和原生刺槐土壤理化性质差异显著(p叶>土壤>微生物量)，N浓度和C:N比表现为叶片>细根>土壤>微生物量。入侵黄花杨叶片、细根和土壤的碳氮比均低于本土黄花杨。朱莉花根际土壤、细根和叶片的平均碳浓度分别为36.72±0.84 g kg - 1、547.84±18.56 g kg - 1和534.77±5.12 g kg - 1，分别是尼罗花的1.42、1.16和1.04倍。胡杨根际土壤、细根和叶片平均氮含量分别为4.37±0.11 g kg - 1、19.96±0.94 g kg - 1和23.18±0.84 g kg - 1，分别是尼罗花的2.0倍、1.27倍和1.85倍。此外，原生尼罗沙草的MBC:SOC或MBN:TN比值较高，可能表明微生物对土壤C的分解效率较高。综上所述，我们的研究结果表明，在Aravalli丘陵的半干旱森林中，入侵的朱丽草改变了生态系统过程，增加了土壤和微生物C、N的储量。
{"title":"Carbon and nitrogen allocation in leaf, fine root, soil, and microbial biomass in invasive Prosopis juliflora and native Acacia nilotica in semi-arid forests of the Aravalli hills","authors":"Shambhavi Srivastava, R. K. Joshi, S. Garkoti","doi":"10.1080/15324982.2023.2180456","DOIUrl":"https://doi.org/10.1080/15324982.2023.2180456","url":null,"abstract":"Abstract Semi-arid forests of the Aravalli hills are rich in tree diversity, but plant invasions during the last several decades, especially by Prosopis juliflora (Sw.) DC. have affected the vegetation structure and biogeochemical cycles of these forests. We compared carbon (C), and nitrogen (N) concentrations in the fine root, leaf, and soil physicochemical properties under the invasive tree species, P. juliflora, and native, Acacia nilotica (L.) Willd. ex Delile, to evaluate the effect of invasive tree species on total soil C, N concentrations, and C:N ratios. We also analyzed the soil samples for soil organic C (SOC), total N (TN), soil microbial biomass C (MBC), and soil microbial biomass N (MBN) and stocks. Soil physical and chemical properties under the invasive P. juliflora and native A. nilotica trees varied significantly (p < 0.05). The C and N concentrations in the fine root, leaf, soil SOC, TN and MBC, and MBN concentrations were significantly (p < 0.05) higher in P. juliflora than A. nilotica while C:N ratio, and bulk density, exhibited the opposite trends. The C concentrations followed the order fine root > leaf > soil > microbial biomass while for N concentration and C:N ratios, it was leaf > fine root > soil > microbial biomass. The invasive P. juliflora had a lower C:N ratio in leaf, fine root, and soil than the native A. nilotica. The average rhizosphere soil, fine root, and leaf C concentration for P. juliflora were 36.72 ± 0.84 g kg−1, 547.84 ± 18.56 g kg−1, and 534.77 ± 5.12 g kg−1, respectively and were 1.42, 1.16 and 1.04 times higher than for A. nilotica. Similarly, P. juliflora average rhizosphere soil, fine root, and leaf N concentrations were 4.37 ± 0.11 g kg−1, 19.96 ± 0.94 g kg−1, and 23.18 ± 0.84 g kg−1, respectively, and 2.0, 1.27, and 1.85 times, respectively, higher than for A. nilotica. Further, the MBC:SOC or MBN:TN ratios were higher in native A. nilotica, likely indicating higher efficiency of microbes in soil C decomposition. Together, our results indicate that invasive P. juliflora altered the ecosystem processes and increased the soil and microbial C, and N stocks compared to native A. nilotica in the semi-arid forests of the Aravalli hills.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"6 1","pages":"535 - 553"},"PeriodicalIF":1.4,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79742368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-20DOI: 10.1080/15324982.2023.2177212
Qing-Hui Liu, Xiao-ying Zhao, C. Baskin, Cheng-lin Zhu, Nabihan Haster, Wu Wang
Abstract Direct seeding is a more cost-effective method for plant community restoration than transplanting pot-grown plants, but this method is not applicable to all plant species and all regions. To evaluate the effectiveness of direct seeding to restore mined cold desert vegetation without irrigation, Atraphaxis frutescens (L.) Ewersm., Calligonum junceum (Fisch. et Mey.) Litv., Peganum harmala L., and Seriphydium gracilescens (Krasch. et Iljin) Poljak. were directly sown in the bottom of dry furrows and on a flat site in the mined wasteland before the second snowfall in late autumn. Seedling emergence, survival, and growth were monitored for 3 years. For the four species, cumulative seed germination in the furrows ranged from 6.4 to 23.6% and the highest germination was 23.0 and 23.6% for A. frutescens and C. junceum, respectively. Survival at the end of 3 years was 7.0–56.1% for the four species. In the flat area, cumulative seedling emergence for C. junceum, A. frutescens, P. harmala, and S. gracilescens was 0, 0, 0.7, and 1.4%, respectively, and all seedlings died with the onset of drought. Thus, under natural precipitation conditions, the success of direct seeding depends on the microsite and species. We conclude that direct seeding can be an effective method for establishing the shrubs A. frutescens and C. junceum in mined wasteland if seeds are sown in furrows that have been created across the landscape.
{"title":"Effects of direct seeding of four native species for reclamation of mined land in the cold desert of Xinjiang in northwest China","authors":"Qing-Hui Liu, Xiao-ying Zhao, C. Baskin, Cheng-lin Zhu, Nabihan Haster, Wu Wang","doi":"10.1080/15324982.2023.2177212","DOIUrl":"https://doi.org/10.1080/15324982.2023.2177212","url":null,"abstract":"Abstract Direct seeding is a more cost-effective method for plant community restoration than transplanting pot-grown plants, but this method is not applicable to all plant species and all regions. To evaluate the effectiveness of direct seeding to restore mined cold desert vegetation without irrigation, Atraphaxis frutescens (L.) Ewersm., Calligonum junceum (Fisch. et Mey.) Litv., Peganum harmala L., and Seriphydium gracilescens (Krasch. et Iljin) Poljak. were directly sown in the bottom of dry furrows and on a flat site in the mined wasteland before the second snowfall in late autumn. Seedling emergence, survival, and growth were monitored for 3 years. For the four species, cumulative seed germination in the furrows ranged from 6.4 to 23.6% and the highest germination was 23.0 and 23.6% for A. frutescens and C. junceum, respectively. Survival at the end of 3 years was 7.0–56.1% for the four species. In the flat area, cumulative seedling emergence for C. junceum, A. frutescens, P. harmala, and S. gracilescens was 0, 0, 0.7, and 1.4%, respectively, and all seedlings died with the onset of drought. Thus, under natural precipitation conditions, the success of direct seeding depends on the microsite and species. We conclude that direct seeding can be an effective method for establishing the shrubs A. frutescens and C. junceum in mined wasteland if seeds are sown in furrows that have been created across the landscape.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"69 1","pages":"461 - 472"},"PeriodicalIF":1.4,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89163553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-17DOI: 10.1080/15324982.2023.2177905
Asieh Sheikhzadeh, M. Tarkesh Esfahani, H. Bashari
Abstract Modeling species distribution and predicting the effects of climate change on plant species decline are necessary in restoration programs. This study aimed to predict the occurrence and decline of Astragalus verus under climate change in Central Iran with an area of about 123,167 km2. We recorded 12 and 71 sites for the dead and alive species using the stratified sampling method, respectively. The general circulation model of CCSM4 was applied at two timeframes of present and 2050 under two climate change scenarios of RCP2.6 and RCP8.5. Four environmental variables of annual mean temperature, the maximum temperature of the warmest month, the precipitation of the coldest quarter, and elevation were selected as the inputs of the nine statistical models. Results indicated that Random Forest model had the best performance in predicting climatic niche and decline of A. verus (AUC and TSS of 0.99) compared to the other models. The suitable habitat and decline for this species are 12.4% and 19.87% of the study area, respectively. With the estimated temperature rise of 3 °C under the CCSM4-RCP2.6 scenario, A. verus habitat will shrink by about 3.4% of the study area and will move toward higher elevations with colder temperatures in the future. Most changes in the suitability of the species will occur in the altitude range of 1800 to 2200 meters because the most temperature and precipitation variations will happen in this elevation stratum. The results can be used to prevent its rapid dieback or even restore vegetation cover in regions with similar conditions.
{"title":"Predicting the occurrence and decline of Astragalus verus Olivier under climate change scenarios in Central Iran","authors":"Asieh Sheikhzadeh, M. Tarkesh Esfahani, H. Bashari","doi":"10.1080/15324982.2023.2177905","DOIUrl":"https://doi.org/10.1080/15324982.2023.2177905","url":null,"abstract":"Abstract Modeling species distribution and predicting the effects of climate change on plant species decline are necessary in restoration programs. This study aimed to predict the occurrence and decline of Astragalus verus under climate change in Central Iran with an area of about 123,167 km2. We recorded 12 and 71 sites for the dead and alive species using the stratified sampling method, respectively. The general circulation model of CCSM4 was applied at two timeframes of present and 2050 under two climate change scenarios of RCP2.6 and RCP8.5. Four environmental variables of annual mean temperature, the maximum temperature of the warmest month, the precipitation of the coldest quarter, and elevation were selected as the inputs of the nine statistical models. Results indicated that Random Forest model had the best performance in predicting climatic niche and decline of A. verus (AUC and TSS of 0.99) compared to the other models. The suitable habitat and decline for this species are 12.4% and 19.87% of the study area, respectively. With the estimated temperature rise of 3 °C under the CCSM4-RCP2.6 scenario, A. verus habitat will shrink by about 3.4% of the study area and will move toward higher elevations with colder temperatures in the future. Most changes in the suitability of the species will occur in the altitude range of 1800 to 2200 meters because the most temperature and precipitation variations will happen in this elevation stratum. The results can be used to prevent its rapid dieback or even restore vegetation cover in regions with similar conditions.","PeriodicalId":8380,"journal":{"name":"Arid Land Research and Management","volume":"20 1","pages":"577 - 601"},"PeriodicalIF":1.4,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90165226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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