Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13513 |
Global changes in soil stocks of carbon, nitrogen, phosphorus, and sulphur as influenced by long-term agricultural production | |
Kopittke, Peter M.; Dalal, Ram C.; Finn, Damien; Menzies, Neal W. | |
2017-06-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Quantifying changes in stocks of C, N, P, and S in agricultural soils is important not only for managing these soils sustainably as required to feed a growing human population, but for C and N, they are also important for understanding fluxes of greenhouse gases from the soil environment. In a global meta-analysis, 102 studies were examined to investigate changes in soil stocks of organic C, total N, total P, and total S associated with long-term land-use changes. Conversion of native vegetation to cropping resulted in substantial losses of C (-1.6 kg m(-2), -43%), N (-0.15 kg m(-2), -42%), P (-0.029 kg m(-2), -27%), and S (-0.015 kg m(-2), -33%). The subsequent conversion of conventional cropping systems to no-till, organic agriculture, or organic amendment systems subsequently increased stocks, but the magnitude of this increase (average of +0.47 kg m(-2) for C and +0.051 kg m(-2) for N) was small relative to the initial decrease. We also examined the conversion of native vegetation to pasture, with changes in C (-11%), N (+4.1%), and P (+25%) generally being modest relative to changes caused by conversion to cropping. The C: N ratio remained relatively constant irrespective of changes in land use, whilst in contrast, the C: S ratio decreased by 21% in soils converted to cropping - this suggesting that biochemical mineralization is of importance for S. The data presented here will assist in the assessment of different agricultural production systems on soil stocks of C, N, P, and S -this information assisting not only in quantifying the effects of existing agricultural production on these stocks, but also allowing for informed decision-making regarding the potential effects of future land-use changes. |
英文关键词 | conventional cropping land-use change no-till organic agriculture organic amendment pasture soil stocks |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400445900032 |
WOS关键词 | LAND-USE CHANGE ; ORGANIC-CARBON ; CONTINUOUS CULTIVATION ; SOUTHERN QUEENSLAND ; SEQUESTRATION ; FOREST ; FRACTIONS ; DYNAMICS ; TILLAGE ; MATTER |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17784 |
专题 | 气候变化 资源环境科学 |
作者单位 | Univ Queensland, Sch Agr & Food Sci, St Lucia, Qld 4072, Australia |
推荐引用方式 GB/T 7714 | Kopittke, Peter M.,Dalal, Ram C.,Finn, Damien,et al. Global changes in soil stocks of carbon, nitrogen, phosphorus, and sulphur as influenced by long-term agricultural production[J]. GLOBAL CHANGE BIOLOGY,2017,23(6). |
APA | Kopittke, Peter M.,Dalal, Ram C.,Finn, Damien,&Menzies, Neal W..(2017).Global changes in soil stocks of carbon, nitrogen, phosphorus, and sulphur as influenced by long-term agricultural production.GLOBAL CHANGE BIOLOGY,23(6). |
MLA | Kopittke, Peter M.,et al."Global changes in soil stocks of carbon, nitrogen, phosphorus, and sulphur as influenced by long-term agricultural production".GLOBAL CHANGE BIOLOGY 23.6(2017). |
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