Understanding historical changes of water and sand characteristics in the Ganjiang River basin and their influencing factors is critical task for ecological construction, water resources management, and human production and life in the basin. We here used Mann-Kendall and sliding t-tests to analyze the annual runoff and annual sand transport in the basin based on data from Ganjiang River hydrological stations from 1958 to 2019. Our results show that: (1) the interannual variation of runoff in the Ganjiang River basin from 1958 to 2019 is significant, alternating between flat, dry, and abundant water conditions, with an abrupt change occurring in 1990 at all stations. (2) The annual sand transport at all stations showed a significant decrease, being most significant at Waizhou and Ji'an stations. Abrupt changes in the amount of sand transported at four upstream stations, Ji'an Station, and Waizhou Station were seen during 2002, 1994, and 1997, respectively. (3) Sand transport in the basin varies with runoff, and the two are highly correlated. Factors such as climate change and human activities can affect water and sand changes in the Ganjiang River basin, which requires a thorough understanding of how climate change may impact ecological protection and the strengthening water resources management.
{"title":"Analysis of Water-Sand Changes and Influencing\u0000Factors in the Ganjiang River Basin\u0000from 1958-2019","authors":"Siyu Zheng, Jiawei Chen, Jianbo Qiao, Xiaoting Pan, Xiaojuan Xu, Li Zhang, Guihua Liu, Xinchen Gu","doi":"10.15244/pjoes/174482","DOIUrl":"https://doi.org/10.15244/pjoes/174482","url":null,"abstract":"Understanding historical changes of water and sand characteristics in the Ganjiang River basin and their influencing factors is critical task for ecological construction, water resources management, and human production and life in the basin. We here used Mann-Kendall and sliding t-tests to analyze the annual runoff and annual sand transport in the basin based on data from Ganjiang River hydrological stations from 1958 to 2019. Our results show that: (1) the interannual variation of runoff in the Ganjiang River basin from 1958 to 2019 is significant, alternating between flat, dry, and abundant water conditions, with an abrupt change occurring in 1990 at all stations. (2) The annual sand transport at all stations showed a significant decrease, being most significant at Waizhou and Ji'an stations. Abrupt changes in the amount of sand transported at four upstream stations, Ji'an Station, and Waizhou Station were seen during 2002, 1994, and 1997, respectively. (3) Sand transport in the basin varies with runoff, and the two are highly correlated. Factors such as climate change and human activities can affect water and sand changes in the Ganjiang River basin, which requires a thorough understanding of how climate change may impact ecological protection and the strengthening water resources management.","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":"29 7","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139383043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation and Obstacle Degree Analysis\u0000of Sustainable Utilization of Water Resources\u0000in Hotan Area","authors":"Qi Zhao","doi":"10.15244/pjoes/173098","DOIUrl":"https://doi.org/10.15244/pjoes/173098","url":null,"abstract":"","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":"28 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139384779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sakulrat Sutthiprapa, S. Towprayoon, C. Chiemchaisri, P. Chaiprasert, K. Wangyao
{"title":"Performance Comparison between Anaerobic\u0000Hybrid Reactor and Anaerobic Continuous\u0000Stirred-Tank Reactor for High-Strength Fresh\u0000Leachate Treatment","authors":"Sakulrat Sutthiprapa, S. Towprayoon, C. Chiemchaisri, P. Chaiprasert, K. Wangyao","doi":"10.15244/pjoes/174785","DOIUrl":"https://doi.org/10.15244/pjoes/174785","url":null,"abstract":"","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":"38 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139386370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sheng Wang, Hao Ding, Feng Huang, Qin Wei, Tan Li, Tao Wen
Water inrush has become one of the main engineering hazards in tunnel and underground engineering construction. A new ideal point interval recognition model for risk assessment of water inrush
涌水已成为隧道和地下工程施工中的主要工程隐患之一。用于涌水风险评估的新型理想点区间识别模型
{"title":"Ideal Point Interval Recognition Model\u0000for Dynamic Risk Assessment of Water Inrush\u0000in Karst Tunnel and Its Application","authors":"Sheng Wang, Hao Ding, Feng Huang, Qin Wei, Tan Li, Tao Wen","doi":"10.15244/pjoes/173127","DOIUrl":"https://doi.org/10.15244/pjoes/173127","url":null,"abstract":"Water inrush has become one of the main engineering hazards in tunnel and underground engineering construction. A new ideal point interval recognition model for risk assessment of water inrush","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":"52 16","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139385742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rare earth elements (REE) are essential components in various modern technologies. Mining activities, in contrast, severely destabilize the adjacent ecological systems. The soil transformation environmental issue in mining areas is inextricably linked to process techniques. Inconsistencies in harm and serviceability arise from different mining techniques. This study was conducted in Fujian, China, which has abundance of ion adsorption type rare earth resources (IAT-Res). We investigated the soil interaction effects of two mining techniques (heap leaching and in-situ leaching). After eight years of restoration, soil destruction and nutrient imbalance remain significant in the heap leaching mining regions. The effects of heap leaching are distinct, whereas pollution caused by in-situ leaching is hidden. Although the in-situ leaching technique resulted in less soil erosion, its potential environmental risk cannot be ignored. The greater number of (NH 4 ) 2 SO 4 leachate residues left over after in-situ leaching contaminate the surrounding ecosystem as they are easily translocated. Through this study, we demonstrate the ecological impacts of different mining techniques in mining areas. As a result, to obtain accurate protection and contaminant control management. However, additional interests should address the leachate and REE pollution caused by in-situ leaching in a larger region.
稀土元素（REE）是各种现代技术的重要组成部分。而采矿活动则严重破坏了邻近生态系统的稳定。矿区的土壤转化环境问题与工艺技术密不可分。不同的采矿技术会产生不同的危害和适用性。本研究在拥有丰富离子吸附型稀土资源（IAT-Res）的中国福建进行。我们调查了两种采矿技术（堆浸和原地浸出）对土壤的交互影响。经过八年的恢复，堆浸采矿区的土壤破坏和养分失衡依然严重。堆浸的影响是明显的，而原地浸出造成的污染则是隐蔽的。虽然原地沥滤技术减少了水土流失，但其潜在的环境风险也不容忽视。原地沥滤后残留的较多 (NH 4 ) 2 SO 4 沥滤液会污染周围的生态系统，因为它们很容易迁移。通过这项研究，我们展示了不同采矿技术对矿区生态环境的影响。因此，要获得准确的保护和污染物控制管理。不过，我们还应该在更大的区域内对原地浸出造成的浸出液和 REE 污染进行研究。
{"title":"Impacts of Ion Adsorption Type Rare Earth Mining\u0000Techniques on Topsoil in Mining Area","authors":"Hai-bin Chen, Zhibiao Chen, Haimei Chen","doi":"10.15244/pjoes/174481","DOIUrl":"https://doi.org/10.15244/pjoes/174481","url":null,"abstract":"Rare earth elements (REE) are essential components in various modern technologies. Mining activities, in contrast, severely destabilize the adjacent ecological systems. The soil transformation environmental issue in mining areas is inextricably linked to process techniques. Inconsistencies in harm and serviceability arise from different mining techniques. This study was conducted in Fujian, China, which has abundance of ion adsorption type rare earth resources (IAT-Res). We investigated the soil interaction effects of two mining techniques (heap leaching and in-situ leaching). After eight years of restoration, soil destruction and nutrient imbalance remain significant in the heap leaching mining regions. The effects of heap leaching are distinct, whereas pollution caused by in-situ leaching is hidden. Although the in-situ leaching technique resulted in less soil erosion, its potential environmental risk cannot be ignored. The greater number of (NH 4 ) 2 SO 4 leachate residues left over after in-situ leaching contaminate the surrounding ecosystem as they are easily translocated. Through this study, we demonstrate the ecological impacts of different mining techniques in mining areas. As a result, to obtain accurate protection and contaminant control management. However, additional interests should address the leachate and REE pollution caused by in-situ leaching in a larger region.","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":"28 40","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139388918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Because the integrated development of rural industry promotes the application of the agricultural green production mode, it inevitably has an impact on the green development of agriculture. Analysing the influence of rural industry integration on agricultural green development is of great significance for realizing agricultural modernization and sustainable development. Based on panel data of 30 provinces in China during 2010-2021, the entropy weight TOPSIS method was used to estimate the agricultural green development level (AGD) and the rural industrial integration level (RII). The influence of agricultural industry integration (AII) on the level of agricultural green development (AGD) and its nonlinear characteristics were analysed by constructing a fixed model, intermediary effect model and threshold effect model. The results show the following. (1) A significant positive relationship exists between the RII and the AGD; that is, the development of rural industry integration can effectively promote the green development of agriculture. Regarding the three regions in China, the integration of rural industries in eastern China plays the most prominent role in the green development of agriculture. (2) Rural industrial integration has significant scale, capital and technology effects; that is, rural industrial integration mainly promotes AGD indirectly by promoting agricultural scale management and agricultural technological progress and improving rural human capital. (3) Rural industrial integration has a significant nonlinear marginal increasing effect on AGD. In the dynamic process of AGD changing from low to high, the effect of the marginal utility of rural industrial integration on AGD is gradually enhanced. Therefore, China should strengthen the deeply integrated development of rural industries, ensure the appropriate scale operation of agriculture and adjustments to the planting
{"title":"Does Rural Industrial Integration Promote the Green Development of Agriculture? – Based on Data from 30 Provinces in China from 2010 to 2021","authors":"Chen Chen, Jingjing Wang, Xiaojie Wang, Wei Duan, Chaoying Xie","doi":"10.15244/pjoes/174479","DOIUrl":"https://doi.org/10.15244/pjoes/174479","url":null,"abstract":"Because the integrated development of rural industry promotes the application of the agricultural green production mode, it inevitably has an impact on the green development of agriculture. Analysing the influence of rural industry integration on agricultural green development is of great significance for realizing agricultural modernization and sustainable development. Based on panel data of 30 provinces in China during 2010-2021, the entropy weight TOPSIS method was used to estimate the agricultural green development level (AGD) and the rural industrial integration level (RII). The influence of agricultural industry integration (AII) on the level of agricultural green development (AGD) and its nonlinear characteristics were analysed by constructing a fixed model, intermediary effect model and threshold effect model. The results show the following. (1) A significant positive relationship exists between the RII and the AGD; that is, the development of rural industry integration can effectively promote the green development of agriculture. Regarding the three regions in China, the integration of rural industries in eastern China plays the most prominent role in the green development of agriculture. (2) Rural industrial integration has significant scale, capital and technology effects; that is, rural industrial integration mainly promotes AGD indirectly by promoting agricultural scale management and agricultural technological progress and improving rural human capital. (3) Rural industrial integration has a significant nonlinear marginal increasing effect on AGD. In the dynamic process of AGD changing from low to high, the effect of the marginal utility of rural industrial integration on AGD is gradually enhanced. Therefore, China should strengthen the deeply integrated development of rural industries, ensure the appropriate scale operation of agriculture and adjustments to the planting","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":"5 20","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139148169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jalal Bayar, Shahen Shah, Waleed Khan, M. K. Okla, Yasmeen A. Alwasel, Ibrahium A. Saleh, Hamada AbdElgawad, Waqas Rahim, Babar Iqbal, A. Jalal
Balanced nutrition is the key to higher quality crop production. Micronutrients, especially boron (B) have an important role in various physiological processes and stress tolerance while its deficiency could affect the yield and quality of crop plants. In this context, this study investigated the significance of foliar B application at various growth stages on maize yield components, yield, and grain B content. The treatments consisted of boron foliar application levels (0, 0.5, 1, 1.5 and 2%) at different growth stages (V4 = fourth leaf stage, V8 = eighth leaf stage and VT = tasseling stage) during summer 2021 and 2022. The results revealed that plant height, leaf area plant -1 , leaf area index, plants at harvest, ear length, grains ear -1 , thousand grains weight, shelling percentage, biological yield, grain yield and harvest index were increased with 1 % B foliar spray compared to other levels. In addition, ear length, grains ear -1 , thousand grains weight, shelling percentage, biological yield, grain yield and harvest index were increased with B foliar application at VT (tasseling stage) compared to other stages. It was concluded that the application of 1% foliar boron (1.28 kg B ha -1 ) i.e. 7.32 kg H 3 BO 3 at tasseling stage improved growth, yield and yield components of maize.
均衡营养是提高作物产量的关键。微量营养元素，尤其是硼（B），在各种生理过程和抗逆性中发挥着重要作用，而硼缺乏则会影响作物的产量和质量。在此背景下，本研究调查了在不同生长阶段叶面喷施硼对玉米产量成分、产量和籽粒硼含量的影响。处理包括在 2021 年和 2022 年夏季的不同生长阶段（V4 = 第四叶期、V8 = 第八叶期和 VT = 抽穗期）叶面喷施硼（0、0.5、1、1.5 和 2%）。结果表明，与其他水平相比，叶面喷施 1 % B 能增加株高、株叶面积-1、叶面积指数、收获期株数、穗长、穗粒数-1、千粒重、脱壳率、生物产量、谷物产量和收获指数。此外，与其他阶段相比，在 VT（抽穗期）叶面喷施硼后，穗长、穗粒数-1、千粒重、脱壳率、生物产量、谷物产量和收获指数都有所增加。结论是，在抽穗期叶面喷施 1%的硼（1.28 kg B ha -1 ），即 7.32 kg H 3 BO 3，可改善玉米的生长、产量和产量成分。
{"title":"Boron Foliar Application Improves Growth, Yield and Grain Quality of Maize","authors":"Jalal Bayar, Shahen Shah, Waleed Khan, M. K. Okla, Yasmeen A. Alwasel, Ibrahium A. Saleh, Hamada AbdElgawad, Waqas Rahim, Babar Iqbal, A. Jalal","doi":"10.15244/pjoes/177183","DOIUrl":"https://doi.org/10.15244/pjoes/177183","url":null,"abstract":"Balanced nutrition is the key to higher quality crop production. Micronutrients, especially boron (B) have an important role in various physiological processes and stress tolerance while its deficiency could affect the yield and quality of crop plants. In this context, this study investigated the significance of foliar B application at various growth stages on maize yield components, yield, and grain B content. The treatments consisted of boron foliar application levels (0, 0.5, 1, 1.5 and 2%) at different growth stages (V4 = fourth leaf stage, V8 = eighth leaf stage and VT = tasseling stage) during summer 2021 and 2022. The results revealed that plant height, leaf area plant -1 , leaf area index, plants at harvest, ear length, grains ear -1 , thousand grains weight, shelling percentage, biological yield, grain yield and harvest index were increased with 1 % B foliar spray compared to other levels. In addition, ear length, grains ear -1 , thousand grains weight, shelling percentage, biological yield, grain yield and harvest index were increased with B foliar application at VT (tasseling stage) compared to other stages. It was concluded that the application of 1% foliar boron (1.28 kg B ha -1 ) i.e. 7.32 kg H 3 BO 3 at tasseling stage improved growth, yield and yield components of maize.","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":" 11","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139145181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Jianghuai-Huai Hilly Region (JHHR), being a crucial agricultural and forestry hub within the Yangtze River Economic Belt, holds immense significance in investigating land use dynamics under diverse scenarios. Such exploration not only facilitates the sustainable utilization of land resources but also contributes to ecological environmental preservation and the advancement of regional economic and social development. This study aims to analyze the spatial and temporal characteristics and driving forces of land use in JHHR over the past three decades (1990-2020) using 18 driving factors selected from both the natural environment and social economy. We have considered four different scenarios, including Natural Development (ND), Rapid Development (RD), Cultivated Land Protection (CLP), and Ecological Protection (EP). We used the PLUS model to simulate land use changes in JHHR until 2040, and we analyzed the spatial distribution pattern of land under different objectives. The results show that: (1) The main types of land use in the Jianghuai hilly area are arable land and woodland. In the past 30 years, the land use changes have been relatively stable, the area of arable land and woodland has continued to decrease, and the construction land has continued to grow; unused land and grassland have the highest dynamic degree, with the highest comprehensive dynamic degree from 2000 to 2005, at 0.42%; (2) In 2020, the simulation accuracy of land use in different time spans is high, with a Kappa coefficient higher than 0.85 and an overall accuracy higher than 92%, both higher than the standard. (3) The main driving factors for land expansion from 1990 to 2020 were natural factors such as DEM and slope, and the driving forces for construction land mainly came from socio-economic factors. (4) There are obvious gaps in land use changes under different scenarios. A comprehensive comparison of the growth of other types of land use to varying degrees under the ecological protection scenario and under the protection of ecological land use can be used as the optimal development scenario model. The scenario simulation can provide an effective reference for the rational planning and management of land in the Jianghuai hilly area.
{"title":"Simulation and Analysis of Land Use Change in Jianghuai Hilly Area Based on PLUS Model","authors":"Liuyang Xu, Weiling Guo, Jiang Jia","doi":"10.15244/pjoes/173108","DOIUrl":"https://doi.org/10.15244/pjoes/173108","url":null,"abstract":"The Jianghuai-Huai Hilly Region (JHHR), being a crucial agricultural and forestry hub within the Yangtze River Economic Belt, holds immense significance in investigating land use dynamics under diverse scenarios. Such exploration not only facilitates the sustainable utilization of land resources but also contributes to ecological environmental preservation and the advancement of regional economic and social development. This study aims to analyze the spatial and temporal characteristics and driving forces of land use in JHHR over the past three decades (1990-2020) using 18 driving factors selected from both the natural environment and social economy. We have considered four different scenarios, including Natural Development (ND), Rapid Development (RD), Cultivated Land Protection (CLP), and Ecological Protection (EP). We used the PLUS model to simulate land use changes in JHHR until 2040, and we analyzed the spatial distribution pattern of land under different objectives. The results show that: (1) The main types of land use in the Jianghuai hilly area are arable land and woodland. In the past 30 years, the land use changes have been relatively stable, the area of arable land and woodland has continued to decrease, and the construction land has continued to grow; unused land and grassland have the highest dynamic degree, with the highest comprehensive dynamic degree from 2000 to 2005, at 0.42%; (2) In 2020, the simulation accuracy of land use in different time spans is high, with a Kappa coefficient higher than 0.85 and an overall accuracy higher than 92%, both higher than the standard. (3) The main driving factors for land expansion from 1990 to 2020 were natural factors such as DEM and slope, and the driving forces for construction land mainly came from socio-economic factors. (4) There are obvious gaps in land use changes under different scenarios. A comprehensive comparison of the growth of other types of land use to varying degrees under the ecological protection scenario and under the protection of ecological land use can be used as the optimal development scenario model. The scenario simulation can provide an effective reference for the rational planning and management of land in the Jianghuai hilly area.","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":"1 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139150755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weihua Wang, Xiaokang Ge, GuoQuan Ou, Zhenzhou Shen, Binbin Li
Planting alfalfa is one of the biological measures to manage the Pisha stone area in the Yellow River Basin, where soil erosion is serious, and the ecosystem is extremely fragile. The characteristics and driving factors of plant-soil ecological stoichiometry during the planting process of the loess layer (LL) (0-90 cm) and Pisha stone layer (PSL) (90-180 cm) were studied to reveal the limiting factors of plant-soil nutrients and the driving mechanism of ecosystem evolution in this area. In this study, the correlation between the contents of carbon (C), nitrogen (N), phosphorus (P), and their ratios in alfalfa and soil with different planting years (2, 5, 8, and 10 yr) was measured. Plant-soil C, N, and P stoichiometry characteristics were explored to analyze the influence mechanisms of fallow years and soil layers. The results showed that the changes of C, N, and P in alfalfa were similar to those of soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) in LL. Alfalfa C/N was significantly positively correlated with soil C/P and N/P. Alfalfa growth is limited by N in the early stages and P in the middle and late stages, which can provide a theoretical basis for vegetation restoration and soil erosion management in the Pisha stone region. This study investigated the stochastic properties of the alfalfa-soil continuum and its fluctuations with the planting year.
{"title":"Plant-Soil Stoichiometric Characteristics and Their Influencing Factors in the Pisha Stone Area","authors":"Weihua Wang, Xiaokang Ge, GuoQuan Ou, Zhenzhou Shen, Binbin Li","doi":"10.15244/pjoes/173164","DOIUrl":"https://doi.org/10.15244/pjoes/173164","url":null,"abstract":"Planting alfalfa is one of the biological measures to manage the Pisha stone area in the Yellow River Basin, where soil erosion is serious, and the ecosystem is extremely fragile. The characteristics and driving factors of plant-soil ecological stoichiometry during the planting process of the loess layer (LL) (0-90 cm) and Pisha stone layer (PSL) (90-180 cm) were studied to reveal the limiting factors of plant-soil nutrients and the driving mechanism of ecosystem evolution in this area. In this study, the correlation between the contents of carbon (C), nitrogen (N), phosphorus (P), and their ratios in alfalfa and soil with different planting years (2, 5, 8, and 10 yr) was measured. Plant-soil C, N, and P stoichiometry characteristics were explored to analyze the influence mechanisms of fallow years and soil layers. The results showed that the changes of C, N, and P in alfalfa were similar to those of soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) in LL. Alfalfa C/N was significantly positively correlated with soil C/P and N/P. Alfalfa growth is limited by N in the early stages and P in the middle and late stages, which can provide a theoretical basis for vegetation restoration and soil erosion management in the Pisha stone region. This study investigated the stochastic properties of the alfalfa-soil continuum and its fluctuations with the planting year.","PeriodicalId":20363,"journal":{"name":"Polish Journal of Environmental Studies","volume":"7 6","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139150830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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