Soil Research最新文献_第7页

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

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

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

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

{"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

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

{"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

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

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

Elisa Marie D’Angelo

{"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

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

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

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

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

{"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

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

Balwant Singh, M. Tibbett

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

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

Juhwan Lee, R. Plant

{"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