Tillage and cropping effects on the fate of crop derived-c and n and turnover of soil organic matter
耕作和耕作对作物衍生碳和氮的命运以及土壤有机质周转的影响
基本信息
- 批准号:2280-2010
- 负责人:
- 金额:$ 1.82万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2013
- 资助国家:加拿大
- 起止时间:2013-01-01 至 2014-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Two-thirds of the terrestrial C is stored as soil organic matter (SOM) in agricultural, forest and grassland soils, therefore it is a primary storehouse of global C and changes in the dynamics of SOM can influence global levels of atmospheric carbon dioxide (CO2). SOM is also critical for plant and animal life because of it modifies soil physical, chemical and biological properties, including nutrient and water retention, erosion resistance, and soil fertility. Despite this central role, the nature and dynamics of SOM as affected by land-use change or global warming are poorly understood - it is considered to be the most complex mixture on earth. Agricultural ecosystems account for 11% of the land area and management practices directly affect SOM formation and turnover. Recently these soils have become a major research focus because of the potential for SOM to mitigate climate change: the soils have lost 30-50% of their original SOM but could be managed to be a major global reservoir for atmospheric CO2 where plant C is sequestered as SOM that is hundreds to thousands of years old. My research program studies how farming practices and soil properties affect SOM constituents and is critical for devising strategies for sequestering C. The proposed research will be conducted on soil and crop samples collected at a long-term field site located at Delhi, ON. These field plots were established in 1988 on a site in tobacco-fall rye rotation since 1933. The soils are loamy sand, allowing study of SOM constituents free of the confounding affects of clay. It includes three cropping systems (continuous corn, a soybean-wheat rotation and a tobacco-rye rotation), under two tillage regimes, CT using mouldboard plough-disc tillage and NT. The goal is to identify changes in the quantity and composition of SOM resulting from a shift in cropping sequence and tillage from the previous tobacco-rye CT rotation. Since measurable changes in SOM pools occur slowly, the fact that this site has been in place for ~20 yr is invaluable. It believed to be the only long-term site in the world containing 14C- and 15N-labelled crop residues and allowing measurements of delta 13C because of the switch from C3 (tobacco-rye) to C4 (corn) species.
陆地碳的2/3以土壤有机质(SOM)的形式储存在农业、森林和草地土壤中,是全球碳的主要储存库,土壤有机质动态变化可影响全球大气CO2浓度。有机质对植物和动物的生命也至关重要,因为它改变了土壤的物理,化学和生物特性,包括养分和水分保持,抗侵蚀性和土壤肥力。尽管这一核心作用,土壤有机质的性质和动态的影响,土地利用变化或全球变暖的了解甚少-它被认为是地球上最复杂的混合物。农业生态系统占土地面积的11%,管理措施直接影响SOM的形成和周转。最近,这些土壤已成为一个主要的研究热点,因为SOM的潜力,以减轻气候变化:土壤已经失去了30-50%的原始SOM,但可以管理成为一个主要的全球水库大气CO2,植物C是隔离的SOM是几百到几千年的年龄。我的研究项目是研究农业实践和土壤特性如何影响有机质成分,这对于制定隔离C。拟议的研究将进行土壤和作物样本收集在一个长期的现场位于德里,ON。这些田间地块建立于1988年的一个网站上,自1933年以来,烟草秋季黑麦轮换。土壤是壤土砂,允许研究SOM成分的粘土的混杂影响。它包括三种种植制度(玉米连作、大豆-小麦轮作和烟草-黑麦轮作),采用两种耕作制度,即CT使用犁板-圆盘耕作和NT。我们的目标是确定的数量和组成的SOM的变化,从以前的烟草黑麦CT旋转的种植顺序和耕作的转变。 由于SOM池的可测量的变化发生缓慢,这个网站已经到位了20年的事实是非常宝贵的。它被认为是世界上唯一一个含有14 C和15 N标记的作物残留物并允许测量δ 13 C的长期站点,因为从C3(烟草-黑麦)转换为C4(玉米)物种。
项目成果
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Voroney, Paul其他文献
Comparison of carbon budget, evapotranspiration, and albedo effect between the biofuel crops switchgrass and corn
- DOI:
10.1016/j.agee.2016.07.007 - 发表时间:
2016-09-01 - 期刊:
- 影响因子:6.6
- 作者:
Eichelmann, Elke;Wagner-Riddle, Claudia;Voroney, Paul - 通讯作者:
Voroney, Paul
Carbon dioxide exchange dynamics over a mature switchgrass stand
- DOI:
10.1111/gcbb.12259 - 发表时间:
2016-03-01 - 期刊:
- 影响因子:5.6
- 作者:
Eichelmann, Elke;Wagner-Riddle, Claudia;Voroney, Paul - 通讯作者:
Voroney, Paul
Evidence for the formation of fused aromatic ring structures in an organic soil profile in the early diagenesis.
- DOI:
10.1038/s41598-023-39181-8 - 发表时间:
2023-07-31 - 期刊:
- 影响因子:4.6
- 作者:
Gamage, Jeewan;Voroney, Paul;Gillespie, Adam;Lo, Andy;Longstaffe, James - 通讯作者:
Longstaffe, James
Minimizing nitrogen losses from a corn-soybean-winter wheat rotation with best management practices
- DOI:
10.1007/s10705-007-9103-9 - 发表时间:
2007-10-01 - 期刊:
- 影响因子:3.1
- 作者:
Jayasundara, Susantha;Wagner-Riddle, Claudia;Voroney, Paul - 通讯作者:
Voroney, Paul
Voroney, Paul的其他文献
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{{ truncateString('Voroney, Paul', 18)}}的其他基金
Management effects on the nature of organic matter in agricultural soils
管理对农业土壤有机质性质的影响
- 批准号:
RGPIN-2017-05159 - 财政年份:2022
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Management effects on the nature of organic matter in agricultural soils
管理对农业土壤有机质性质的影响
- 批准号:
RGPIN-2017-05159 - 财政年份:2021
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Management effects on the nature of organic matter in agricultural soils
管理对农业土壤有机质性质的影响
- 批准号:
RGPIN-2017-05159 - 财政年份:2020
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Management effects on the nature of organic matter in agricultural soils
管理对农业土壤有机质性质的影响
- 批准号:
RGPIN-2017-05159 - 财政年份:2019
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Management effects on the nature of organic matter in agricultural soils
管理对农业土壤有机质性质的影响
- 批准号:
RGPIN-2017-05159 - 财政年份:2018
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Management effects on the nature of organic matter in agricultural soils
管理对农业土壤有机质性质的影响
- 批准号:
RGPIN-2017-05159 - 财政年份:2017
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Improved method for analysis of the sand, silt and clay content of clayey soils and parent materials
粘土和母质中沙子、淤泥和粘土含量分析的改进方法
- 批准号:
521988-2017 - 财政年份:2017
- 资助金额:
$ 1.82万 - 项目类别:
Engage Grants Program
Soil and crop management to promote formation of stable soil organic matter
土壤和作物管理促进稳定土壤有机质的形成
- 批准号:
RGPIN-2015-04718 - 财政年份:2015
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Tillage and cropping effects on the fate of crop derived-c and n and turnover of soil organic matter
耕作和耕作对作物衍生碳和氮的命运以及土壤有机质周转的影响
- 批准号:
2280-2010 - 财政年份:2014
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
Tillage and cropping effects on the fate of crop derived-c and n and turnover of soil organic matter
耕作和耕作对作物衍生碳和氮的命运以及土壤有机质周转的影响
- 批准号:
2280-2010 - 财政年份:2012
- 资助金额:
$ 1.82万 - 项目类别:
Discovery Grants Program - Individual
相似海外基金
Tillage and cropping effects on the fate of crop derived-c and n and turnover of soil organic matter
耕作和耕作对作物衍生碳和氮的命运以及土壤有机质周转的影响
- 批准号:
2280-2010 - 财政年份:2014
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耕作和耕作对作物衍生碳和氮的命运以及土壤有机质周转的影响
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2280-2010 - 财政年份:2012
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耕作和耕作对作物衍生碳和氮的命运以及土壤有机质周转的影响
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耕作和耕作对作物衍生碳和氮的命运以及土壤有机质周转的影响
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耕作制度对碳循环的影响
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