Modeling impacts of management on farmland soil carbon dynamics along a climate gradient in Northwest China during 1981-2000 | |
Zhang, Fan1; Li, Changsheng2; Wang, Zheng3; Glidden, Stanley2; Grogan, Danielle S.2; Li, Xuxiang1; Cheng, Yan1; Frolking, Steve2 | |
2015-09-24 | |
发表期刊 | ECOLOGICAL MODELLING |
ISSN | 0304-3800 |
卷号 | 312期号:2015页码:1-10 |
文章类型 | Article |
摘要 | A regional study was conducted to investigate historical variations in soil organic carbon (SOC) storage in agricultural lands along a climate gradient in the Loess Plateau. A process-based model, Denitrification-Decomposition (DNDC) was used to simulate SOC dynamics. A database containing spatially differentiated climate, soil and farming management information was linked to DNDC to support the regional simulations. DNDC was run for all croplands in the Loess Plateau for 20 years. Simulation results demonstrated that SOC stocks in the region amounted to 1.15 Pg C and the SOC content of 65% farmland was below China's national level. Crop management could effectively improve SOC storage and available water played a key role in controlling cropland SOC dynamics. Analyses of SOC change and climate variability indicate that the regional SOC increased along the moisture gradient. We found that (1) higher annual precipitation increased crop productivity, particularly in rain-fed cropping systems, adding more crop residue (i.e., litter) production to the soils that favors SOC accumulation; and (2) irrigation played a crucial role in maintaining the SOC content in areas with low precipitation, where the enhanced irrigation capacity could substantially elevate the SOC storage in the semi-arid domain. The soil in the Loess Plateau is likely to accumulate SOC and to produce a carbon equilibrium rapidly when available water and water use efficiency increase. (C) 2015 Elsevier B.V. All rights reserved. |
关键词 | Soil Organic Carbon Crop Management Climate |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
DOI | 10.1016/j.ecolmodel.2015.05.006 |
关键词[WOS] | Organic-carbon ; Land-use ; Agricultural Soils ; Crop Production ; Net Flux ; Storage ; Sequestration ; Croplands ; World ; Sensitivity |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology |
WOS类目 | Ecology |
WOS记录号 | WOS:000358469200001 |
出版者 | ELSEVIER SCIENCE BV |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9278 |
专题 | 加速器质谱中心 |
通讯作者 | Zhang, Fan |
作者单位 | 1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Dept Environm Sci & Technol, Xian 710049, Peoples R China 2.Univ New Hampshire, Inst Study Earth Oceans & Space, Durham, NH 03824 USA 3.Chinese Acad Sci, IEE, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Fan,Li, Changsheng,Wang, Zheng,et al. Modeling impacts of management on farmland soil carbon dynamics along a climate gradient in Northwest China during 1981-2000[J]. ECOLOGICAL MODELLING,2015,312(2015):1-10. |
APA | Zhang, Fan.,Li, Changsheng.,Wang, Zheng.,Glidden, Stanley.,Grogan, Danielle S..,...&Frolking, Steve.(2015).Modeling impacts of management on farmland soil carbon dynamics along a climate gradient in Northwest China during 1981-2000.ECOLOGICAL MODELLING,312(2015),1-10. |
MLA | Zhang, Fan,et al."Modeling impacts of management on farmland soil carbon dynamics along a climate gradient in Northwest China during 1981-2000".ECOLOGICAL MODELLING 312.2015(2015):1-10. |
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