Soil Research最新文献

英文中文

Evaluation of SPT-N values and internal friction angle correlation using artificial intelligence methods in granular soils 基于人工智能方法的颗粒土SPT-N值及内摩擦角相关性评价

IF 1.6 4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2023-01-01 DOI: 10.1071/sr22226

A. B. Ekmen

引用次数: 1

Bacterial succession in an abandoned circum-neutral opencast coal mine in India 印度一个废弃的环中性露天煤矿的细菌演替

4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2023-01-01 DOI: 10.1071/sr22135

Sohini Banerjee, Arijit Misra, Abhijit Sar, Srikanta Pal, Shibani Chaudhury, Bomba Dam

Context Abandoned mines provide an ideal opportunity to study the succession of microbial communities, which is crucial for the development and stability of the soil.Aims We examined the diversity and temporal succession of the microbial community in an abandoned coal mine.Methods We investigated soil geochemical parameters and microbial succession using high-throughput 16S rRNA gene amplicon sequences over a 4-year period in a derelict opencast circum-neutral coal mine in Tasra colliery, Jharkhand, India.Results Soil pH (4.46–6.13), organic carbon (0.86–4.53%), available nitrogen (0.001–0.003%) and total cultivable heterotrophic microbial load increased, and concentrations of chloride (24865–15067ppm), sulfate (26417–417ppm) and heavy metals reduced over the period of 4years. The 16S rRNA gene sequences identified Proteobacteria as the dominant phylum across samples except for the fourth year, where Actinobacteria was predominant. Chlorobi, WPS-2 and Spirochaetes were exclusively identified in the first year. Twelve phyla present in the first year were completely absent by the end. In the fourth year, an abundance of nitrogen-fixing members such as Burkholderiales, Rhizobiales, Roseiflexales and Actinomycetales was noted and semi-quantitative PCR suggested that nitrogenases were predominately vanadium dependent (relative to molybdenum). Gradual shifts from purportedly chemolithotrophic to heterotrophic metabolic strategies were also observed.Conclusion This work establishes that soil improvement in abandoned coal mines involves the dynamic interplay of physicochemical parameters and shifts in microbial communities and dominant metabolic guilds. This knowledge can be used to plan and monitor remediation measures in such sites.

废弃矿山为研究微生物群落演替提供了理想的机会，而微生物群落演替对土壤的发育和稳定至关重要。目的研究废弃煤矿微生物群落的多样性和时间演替。方法利用高通量16S rRNA基因扩增子序列对印度贾坎德邦Tasra煤矿一个废弃露天环中性煤矿的土壤地球化学参数和微生物演替进行了研究。结果4年间，土壤pH值(4.46 ~ 6.13)、有机碳(0.86 ~ 4.53%)、速效氮(0.001 ~ 0.003%)和总可培养异养微生物负荷量增加，氯离子(24865 ~ 15067ppm)、硫酸盐(26417 ~ 417ppm)和重金属浓度降低。16S rRNA基因序列显示变形菌门(Proteobacteria)为优势门，第4年为放线菌门(Actinobacteria)。第1年仅鉴定出Chlorobi、WPS-2和Spirochaetes。第一年出现的12个门到最后完全消失了。在第四年，发现了丰富的固氮成员，如Burkholderiales, Rhizobiales, Roseiflexales和放线菌，半定量PCR表明，固氮酶主要依赖钒(相对于钼)。从所谓的趋化营养到异养代谢策略的逐渐转变也被观察到。结论废弃煤矿土壤改良涉及到理化参数与微生物群落和优势代谢行会变化的动态相互作用。这些知识可用于规划和监测这些地点的补救措施。

{"title":"Bacterial succession in an abandoned circum-neutral opencast coal mine in India","authors":"Sohini Banerjee, Arijit Misra, Abhijit Sar, Srikanta Pal, Shibani Chaudhury, Bomba Dam","doi":"10.1071/sr22135","DOIUrl":"https://doi.org/10.1071/sr22135","url":null,"abstract":"Context Abandoned mines provide an ideal opportunity to study the succession of microbial communities, which is crucial for the development and stability of the soil.Aims We examined the diversity and temporal succession of the microbial community in an abandoned coal mine.Methods We investigated soil geochemical parameters and microbial succession using high-throughput 16S rRNA gene amplicon sequences over a 4-year period in a derelict opencast circum-neutral coal mine in Tasra colliery, Jharkhand, India.Results Soil pH (4.46–6.13), organic carbon (0.86–4.53%), available nitrogen (0.001–0.003%) and total cultivable heterotrophic microbial load increased, and concentrations of chloride (24865–15067ppm), sulfate (26417–417ppm) and heavy metals reduced over the period of 4years. The 16S rRNA gene sequences identified Proteobacteria as the dominant phylum across samples except for the fourth year, where Actinobacteria was predominant. Chlorobi, WPS-2 and Spirochaetes were exclusively identified in the first year. Twelve phyla present in the first year were completely absent by the end. In the fourth year, an abundance of nitrogen-fixing members such as Burkholderiales, Rhizobiales, Roseiflexales and Actinomycetales was noted and semi-quantitative PCR suggested that nitrogenases were predominately vanadium dependent (relative to molybdenum). Gradual shifts from purportedly chemolithotrophic to heterotrophic metabolic strategies were also observed.Conclusion This work establishes that soil improvement in abandoned coal mines involves the dynamic interplay of physicochemical parameters and shifts in microbial communities and dominant metabolic guilds. This knowledge can be used to plan and monitor remediation measures in such sites.","PeriodicalId":21818,"journal":{"name":"Soil Research","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135443075","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}

引用次数: 0

The spatial and temporal variability and influence factor analysis of soil erosion in a grass farming area: a case study in central China 草作区土壤侵蚀时空变异及影响因素分析——以华中地区为例

4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2023-01-01 DOI: 10.1071/sr23099

Zijing Xue, Xiaohuang Liu, Mamat Sawut, Jiufen Liu, Xiaofeng Zhao, Liyuan Xing, Ran Wang, Xinping Luo, Chao Wang, Honghui Zhao, Ying Wang

Context Analysing soil erosion has important research significance for the protection of the ecological environment and the prevention and control measures of soil erosion.Methods This paper aims to discuss the soil erosion degree in the warm temperate grass farming subregion of the southern Shanxi and Guanzhong Basin, China, based on Universal Soil Loss Model, RUSLE.Aims The soil erosion modulus from 1998 to 2020 of the study area was calculated and divided into five periods: 2000, 2005, 2010, 2015, and 2020.Key results We highlight two key findings: (1) the average soil erosion modulus changed from 498.86tkm−2a−1 in 2000 to 316.94tkm−2a−1 in 2020, and the proportion of soil area with an unchanged erosion degree is above 85%; (2) the average annual erosion area is the largest when rainfall is greater than 550mm and less than 620mm. From 2000 to 2020, the area of cultivated land decreased by 3497.47km2, and the area of grassland increased by 1364.96 km2. The degree of erosion of grassland is the most severe, with soil erosion is most intense when the Normalised Vegetation Index (NDVI) is greater than 0.55 and less than 0.75.Conclusions The results show that the soil erosion in this area is slight on the whole and its degree has been decreasing.Implications The analysis in this paper can elucidate the seriousness of the soil erosion problem so that the government can strengthen the key management of soil and water conservation and achieve the purpose of reducing soil erosion.

分析土壤侵蚀对生态环境保护和水土流失防治措施具有重要的研究意义。方法基于通用土壤流失模型(RUSLE)，对陕南-关中盆地暖温带草业分区土壤侵蚀程度进行研究。目的计算研究区1998 ~ 2020年土壤侵蚀模数，并将其划分为2000年、2005年、2010年、2015年和2020年5个时期。结果表明:(1)土壤侵蚀模量从2000年的498.86tkm−2a−1增加到2020年的316.94tkm−2a−1，侵蚀程度保持不变的土壤面积比例在85%以上;(2)年平均侵蚀面积在降雨量大于550mm小于620mm时最大。2000 - 2020年，耕地面积减少3497.47km2，草地面积增加1364.96 km2。归一化植被指数(NDVI)大于0.55且小于0.75时，草地侵蚀程度最严重，土壤侵蚀最剧烈。结论该地区土壤侵蚀总体较小，侵蚀程度呈下降趋势。意义通过本文的分析，可以明确水土流失问题的严重性，从而加强水土保持重点管理，达到减少水土流失的目的。

{"title":"The spatial and temporal variability and influence factor analysis of soil erosion in a grass farming area: a case study in central China","authors":"Zijing Xue, Xiaohuang Liu, Mamat Sawut, Jiufen Liu, Xiaofeng Zhao, Liyuan Xing, Ran Wang, Xinping Luo, Chao Wang, Honghui Zhao, Ying Wang","doi":"10.1071/sr23099","DOIUrl":"https://doi.org/10.1071/sr23099","url":null,"abstract":"Context Analysing soil erosion has important research significance for the protection of the ecological environment and the prevention and control measures of soil erosion.Methods This paper aims to discuss the soil erosion degree in the warm temperate grass farming subregion of the southern Shanxi and Guanzhong Basin, China, based on Universal Soil Loss Model, RUSLE.Aims The soil erosion modulus from 1998 to 2020 of the study area was calculated and divided into five periods: 2000, 2005, 2010, 2015, and 2020.Key results We highlight two key findings: (1) the average soil erosion modulus changed from 498.86tkm−2a−1 in 2000 to 316.94tkm−2a−1 in 2020, and the proportion of soil area with an unchanged erosion degree is above 85%; (2) the average annual erosion area is the largest when rainfall is greater than 550mm and less than 620mm. From 2000 to 2020, the area of cultivated land decreased by 3497.47km2, and the area of grassland increased by 1364.96 km2. The degree of erosion of grassland is the most severe, with soil erosion is most intense when the Normalised Vegetation Index (NDVI) is greater than 0.55 and less than 0.75.Conclusions The results show that the soil erosion in this area is slight on the whole and its degree has been decreasing.Implications The analysis in this paper can elucidate the seriousness of the soil erosion problem so that the government can strengthen the key management of soil and water conservation and achieve the purpose of reducing soil erosion.","PeriodicalId":21818,"journal":{"name":"Soil Research","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135612109","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}

引用次数: 0

WEPP interrill erodibility for clay soils in the crop lands of Northern NSW and Southern Queensland, Australia 澳大利亚新南威尔士州北部和昆士兰州南部农田粘土的WEPP沟间可蚀性

4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2023-01-01 DOI: 10.1071/sr23137

Silburn D. Mark, Bronwyn Bosomworth

引用次数: 0

Biosolids amendment effects on nitrogen cycling gene expression by the soil prokaryotic community as revealed by metatranscriptomic analysis 元转录组学分析揭示生物固体对土壤原核生物群落氮循环基因表达的影响

4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2023-01-01 DOI: 10.1071/sr23157

Elisa Marie D’Angelo

Context Large quantities of treated sewage sludge (biosolids) are produced and beneficially applied to agricultural fields to improve soil fertility in many countries. Biosolids have extremely high concentrations of ammonium and organic matter that can be beneficial but also detrimental to the environment by promoting microbially-mediated reactions that contribute to eutrophication and greenhouse gas emission.Aims The hypothesis of the study was that high concentrations of ammonium and labile organic matter in biosolids would significantly affect nitrogen transformations and nitrogen-cycling gene expression by different members of the prokaryotic community in a biosolids-amended agricultural soil.Methods An organically-managed agricultural soil was amended with biosolids and monitored for changes in carbon dioxide and inorganic nitrogen species for 3weeks under laboratory conditions. Then, RNA was extracted and compared for nitrogen-cycling gene expression levels in biosolids-amended and unamended soil.Key results Biosolids amendment significantly increased ammonium concentration and decreased oxygen and nitrate concentrations in soil zones near biosolid particles, which coincided with significant changes in expression levels of genes for catabolic glutamate dehydrogenase, nitrification enzymes, denitrifying enzymes, and numerous other enzymes by different members of the prokaryotic community.Conclusions The application of biosolids to soil set in motion a dynamic organic nitrogen mineralisation–nitrification–denitrification cycle between the anaerobic biosolids zone and aerobic soil zone.Implications Biosolids-induced changes in nitrogen transformations by different members of the microbial community have implications on nitrogen availability/toxicity to nitrifying populations and plants, ammonium and nitrate in surface runoff, and nitrous oxide greenhouse gas emission from biosolids-amended soil.

许多国家生产了大量经过处理的污水污泥(生物固体)，并将其有效地应用于农田，以提高土壤肥力。生物固体具有极高浓度的铵和有机物，通过促进微生物介导的反应促进富营养化和温室气体排放，对环境有益但也有害。本研究假设生物固体中高浓度的铵和活性有机物会显著影响生物固体改良农业土壤中不同原核生物群落成员的氮转化和氮循环基因表达。方法在实验室条件下，用生物固体对农业土壤进行3周的改良，监测土壤中二氧化碳和无机氮的变化。然后，提取RNA，比较生物固体改性和未改性土壤中氮循环基因的表达水平。生物固体改性显著提高了生物固体颗粒附近土壤带的铵态氮浓度，降低了氧和硝酸盐浓度，这与原核生物群落不同成员分解代谢谷氨酸脱氢酶、硝化酶、反硝化酶和许多其他酶的基因表达水平的显著变化相一致。结论生物固体在土壤中的应用启动了厌氧区和好氧区有机氮矿化-硝化-反硝化的动态循环。生物固体引起的不同微生物群落成员氮转化的变化对氮的有效性/对硝化种群和植物的毒性、地表径流中的铵态氮和硝态氮以及生物固体修正土壤的氧化亚氮温室气体排放具有重要影响。

{"title":"Biosolids amendment effects on nitrogen cycling gene expression by the soil prokaryotic community as revealed by metatranscriptomic analysis","authors":"Elisa Marie D’Angelo","doi":"10.1071/sr23157","DOIUrl":"https://doi.org/10.1071/sr23157","url":null,"abstract":"Context Large quantities of treated sewage sludge (biosolids) are produced and beneficially applied to agricultural fields to improve soil fertility in many countries. Biosolids have extremely high concentrations of ammonium and organic matter that can be beneficial but also detrimental to the environment by promoting microbially-mediated reactions that contribute to eutrophication and greenhouse gas emission.Aims The hypothesis of the study was that high concentrations of ammonium and labile organic matter in biosolids would significantly affect nitrogen transformations and nitrogen-cycling gene expression by different members of the prokaryotic community in a biosolids-amended agricultural soil.Methods An organically-managed agricultural soil was amended with biosolids and monitored for changes in carbon dioxide and inorganic nitrogen species for 3weeks under laboratory conditions. Then, RNA was extracted and compared for nitrogen-cycling gene expression levels in biosolids-amended and unamended soil.Key results Biosolids amendment significantly increased ammonium concentration and decreased oxygen and nitrate concentrations in soil zones near biosolid particles, which coincided with significant changes in expression levels of genes for catabolic glutamate dehydrogenase, nitrification enzymes, denitrifying enzymes, and numerous other enzymes by different members of the prokaryotic community.Conclusions The application of biosolids to soil set in motion a dynamic organic nitrogen mineralisation–nitrification–denitrification cycle between the anaerobic biosolids zone and aerobic soil zone.Implications Biosolids-induced changes in nitrogen transformations by different members of the microbial community have implications on nitrogen availability/toxicity to nitrifying populations and plants, ammonium and nitrate in surface runoff, and nitrous oxide greenhouse gas emission from biosolids-amended soil.","PeriodicalId":21818,"journal":{"name":"Soil Research","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135709387","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}

引用次数: 0

Nitrogen dynamics in alpine soils of south-eastern Australia 澳大利亚东南部高山土壤的氮动力学

IF 1.6 4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2023-01-01 DOI: 10.1071/sr22251

S. Grover, J. Tate, Charles Warren, S. Venn

引用次数: 0

Soil phosphorus and biomass carbon co-determine plantation soil organic carbon density: a case study in western Beijing, China 土壤磷和生物量碳共同决定北京西部人工林土壤有机碳密度

IF 1.6 4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2023-01-01 DOI: 10.1071/sr22267

Shiqiang Wang, Yanpei Guo

引用次数: 0

Effects of full inversion tillage during pasture renewal on soil and plant cadmium concentrations: a case study in New Zealand 牧草更新期间全翻转耕作对土壤和植物镉浓度的影响:以新西兰为例

IF 1.6 4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2022-12-05 DOI: 10.1071/sr22193

Yajun Peng, James A. Hanly, Paramsothy Jeyakumar, Roberto Calvelo-Pereira

Context: Cadmium (Cd) accumulation is a concern in permanent pasture soils, as it can lead to increased Cd uptake by plants.

Aims: This study aimed to quantify the effect of full inversion tillage (FIT or ploughing deeper than 30 cm), used during pasture renewal, on the redistribution of Cd within the soil profile and on plant Cd concentration.

Methods: Two field trials (Trial 1, Alfisol; Trial 2, Andisol) were established in New Zealand using contrasting tillage practices (FIT; SIT, shallow tillage; and NT, no tillage) to sow turnips as summer forage crops, followed by autumn re-sowing of perennial ryegrass/white clover pasture.

Key results: In the Alfisol, no measurable differences (P > 0.05) in soil and plant Cd were detected among the tillage treatments. In the Andisol, FIT decreased (P < 0.05) total (0.25 mg/kg) and extractable soil Cd (0.013 mg/kg) in the 0–5 cm depth, compared to pre-tillage (0.42 and 0.031 mg/kg, respectively). Moreover, at this soil depth, FIT achieved a 52% lower (P = 0.034) extractable soil Cd concentration than the ST treatment. In addition, the subsequent new pasture had lower (P = 0.007) average Cd concentration following FIT compared to ST (0.03 vs 0.05 mg/kg).

Conclusions: We demonstrated that the use of FIT during pasture renewal is a potential solution to reduce topsoil Cd concentration.

Implications: The FIT is more effective in soil where total soil Cd concentration or its degree of vertical stratification with depth is relatively high.

背景:镉(Cd)的积累是永久性牧场土壤的一个问题，因为它会导致植物对Cd的吸收增加。目的:本研究旨在量化在牧草更新过程中使用的完全翻转耕作(FIT或耕作深度超过30 cm)对土壤剖面中Cd再分配和植物Cd浓度的影响。方法:两次现场试验(试验1:Alfisol;试验2 (Andisol)在新西兰建立，采用对比耕作方法(FIT;浅耕;和NT(免耕)播种芜菁作为夏季饲料作物，然后秋季重新播种多年生黑麦草/白三叶牧场。关键结果:在Alfisol中，没有可测量的差异(P >不同耕作方式土壤和植物Cd含量差异均达0.05)。在andiol组，FIT降低(P <0 ~ 5 cm深度土壤可提取Cd (0.013 mg/kg)，分别高于耕作前(0.42和0.031 mg/kg)。此外，在该土壤深度，FIT处理的可提取土壤Cd浓度比ST处理低52% (P = 0.034)。此外，与ST相比，FIT后新牧场Cd平均浓度(0.03 mg/kg vs 0.05 mg/kg)较低(P = 0.007)。结论:我们证明了在草场更新过程中使用FIT是降低表层土壤Cd浓度的潜在解决方案。结论:FIT在土壤总镉浓度或随深度垂直分层程度较高的土壤中更为有效。

{"title":"Effects of full inversion tillage during pasture renewal on soil and plant cadmium concentrations: a case study in New Zealand","authors":"Yajun Peng, James A. Hanly, Paramsothy Jeyakumar, Roberto Calvelo-Pereira","doi":"10.1071/sr22193","DOIUrl":"https://doi.org/10.1071/sr22193","url":null,"abstract":"Context: Cadmium (Cd) accumulation is a concern in permanent pasture soils, as it can lead to increased Cd uptake by plants.Aims: This study aimed to quantify the effect of full inversion tillage (FIT or ploughing deeper than 30 cm), used during pasture renewal, on the redistribution of Cd within the soil profile and on plant Cd concentration.Methods: Two field trials (Trial 1, Alfisol; Trial 2, Andisol) were established in New Zealand using contrasting tillage practices (FIT; SIT, shallow tillage; and NT, no tillage) to sow turnips as summer forage crops, followed by autumn re-sowing of perennial ryegrass/white clover pasture.Key results: In the Alfisol, no measurable differences (P > 0.05) in soil and plant Cd were detected among the tillage treatments. In the Andisol, FIT decreased (P < 0.05) total (0.25 mg/kg) and extractable soil Cd (0.013 mg/kg) in the 0–5 cm depth, compared to pre-tillage (0.42 and 0.031 mg/kg, respectively). Moreover, at this soil depth, FIT achieved a 52% lower (P = 0.034) extractable soil Cd concentration than the ST treatment. In addition, the subsequent new pasture had lower (P = 0.007) average Cd concentration following FIT compared to ST (0.03 vs 0.05 mg/kg).Conclusions: We demonstrated that the use of FIT during pasture renewal is a potential solution to reduce topsoil Cd concentration.Implications: The FIT is more effective in soil where total soil Cd concentration or its degree of vertical stratification with depth is relatively high.","PeriodicalId":21818,"journal":{"name":"Soil Research","volume":"6 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138534362","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}

引用次数: 0

Celebrating 60 years of 庆祝60周年

IF 1.6 4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2022-11-14 DOI: 10.1071/sr22223

Balwant Singh, M. Tibbett

An editorial to celebrate the 60th anniversary of the Soil Research journal.

庆祝《土壤研究》杂志创刊60周年的社论。

引用次数: 0

A method for soil management assessment in an unreplicated commercial field 一种在未复制的商业领域进行土壤管理评价的方法

IF 1.6 4区农林科学 Q4 SOIL SCIENCE

Soil Research

Pub Date : 2022-09-09 DOI: 10.1071/sr21090

Juhwan Lee, R. Plant

Context: Unreplicated trials are common in agriculture. However, statistical inferences differ from those of traditional experiments based on small, replicated plots. Aims: To present a method to assess management effects on soil carbon (C) storage from unreplicated, side-by-side field trials. Methods: Two estimates of means with spatially correlated errors are compared using a corrected t-statistic. Then causal inference is made by analysing a significant difference between the means (P<0.05) and its changes over time. The use of the method is described in comparing yield and organic C stocks between two large fields. Yield was measured during 1997–2005 with a commercial yield monitor, and soil organic C stocks during 2003–2005. The fields experienced the same tillage practice until autumn 2003 and then with different tillage intensity. Key results: The results show that crop C yield did not differ between the fields when using the same tillage practice but was greater in the tilled than the no-till field. The results also suggest that total and particulate organic matter-C contents depend on tillage history. For comparative purposes, the data were also analysed using standard mixed model analysis with a semivariogram model for spatial autocorrelation among the residuals. The mixed model results were generally similar to those of the corrected t-statistic method. The mixed model was often, but not always, less conservative than the corrected t-statistic model. Conclusions: The method allows analysis of whole-field data and improves our understanding of soil C processes in commercial fields, where agricultural assessment cannot involve replication due to agronomic and economic constraints. Implications: The method complements observational data analyses and can offer a direction towards whole-field management.

背景:未重复试验在农业中很常见。然而，统计推断不同于传统的基于小的、重复的实验。目的:提出一种评估管理对土壤碳(C)储量影响的方法，该方法通过非重复的并排田间试验进行。方法:使用校正的t统计量比较具有空间相关误差的两个均值估计。然后通过分析均值之间的显著差异(P<0.05)及其随时间的变化进行因果推理。在比较两大块田的产量和有机碳储量时，描述了该方法的应用。在1997-2005年期间用商业产量监测仪测量了产量，在2003-2005年期间测量了土壤有机碳储量。在2003年秋季之前，大田采用相同的耕作方式，然后采用不同的耕作强度。关键结果:结果表明，在相同耕作方式下，作物C产量在不同的田地之间没有差异，但在耕作的田地比不耕作的田地更大。总有机质和颗粒有机质- c含量与耕作历史有关。为了进行比较，还使用标准混合模型分析和残差之间的空间自相关的半变异函数模型来分析数据。混合模型的结果与校正t统计方法的结果大致相似。混合模型通常(但并非总是)比校正后的t统计量模型保守性更低。结论:该方法可以分析整个农田的数据，并提高我们对商业农田土壤C过程的理解，在商业农田，由于农艺和经济限制，农业评估不能涉及复制。意义:该方法是对观测数据分析的补充，可以为全场管理提供方向。

{"title":"A method for soil management assessment in an unreplicated commercial field","authors":"Juhwan Lee, R. Plant","doi":"10.1071/sr21090","DOIUrl":"https://doi.org/10.1071/sr21090","url":null,"abstract":"Context: Unreplicated trials are common in agriculture. However, statistical inferences differ from those of traditional experiments based on small, replicated plots. Aims: To present a method to assess management effects on soil carbon (C) storage from unreplicated, side-by-side field trials. Methods: Two estimates of means with spatially correlated errors are compared using a corrected t-statistic. Then causal inference is made by analysing a significant difference between the means (P<0.05) and its changes over time. The use of the method is described in comparing yield and organic C stocks between two large fields. Yield was measured during 1997–2005 with a commercial yield monitor, and soil organic C stocks during 2003–2005. The fields experienced the same tillage practice until autumn 2003 and then with different tillage intensity. Key results: The results show that crop C yield did not differ between the fields when using the same tillage practice but was greater in the tilled than the no-till field. The results also suggest that total and particulate organic matter-C contents depend on tillage history. For comparative purposes, the data were also analysed using standard mixed model analysis with a semivariogram model for spatial autocorrelation among the residuals. The mixed model results were generally similar to those of the corrected t-statistic method. The mixed model was often, but not always, less conservative than the corrected t-statistic model. Conclusions: The method allows analysis of whole-field data and improves our understanding of soil C processes in commercial fields, where agricultural assessment cannot involve replication due to agronomic and economic constraints. Implications: The method complements observational data analyses and can offer a direction towards whole-field management.","PeriodicalId":21818,"journal":{"name":"Soil Research","volume":"174 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79614579","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}

引用次数: 0

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

Soil Research

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀