Projected changes in soil organic carbon stocks of China's croplands under different agricultural managements, 2011-2050

doi:10.1016/j.agee.2013.06.008

	Projected changes in soil organic carbon stocks of China's croplands under different agricultural managements, 2011-2050
	Yu, Yongqiang ; Huang, Yao1 ; Zhang, Wen
	2013
发表期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
卷号	178 页码:109-120
摘要	The timing, magnitude, and regional distribution of soil organic carbon (SOC) changes are uncertain when factoring in climate change and agricultural management practices. The goal of this study is to analyze the implications of changes in climate and agricultural management for Chinese soil carbon sequestration over the next 40 years. We used the Agro-C model to simulate climate and agricultural management scenarios to investigate the combined impacts of climate change and management on future SOC stocks in China's croplands. The model was run for croplands on mineral soils in China, which make up a total of 130 M ha of cropland. The model used climate data (years 2011-2050) from the FGOALS and PRECIS climate models based on four Intergovernmental Panel on Climate Change (IPCC) emissions scenarios. Three equidistant agricultural management scenarios were used. SO was a current scenario, and S2 was an optimal scenario. Under the S2 scenario, crop yields increased annually by 1%, the proportion of crop residue retained in the field reached 90% by 2050, and the area of no-tillage increased to 50% of the cultivated area by 2050. The S1 scenario applied half of the increased rates in crop yields, residue retention and no-tillage area values that were used in the S2 scenario. Across all croplands in China, the results suggest that SOC will increase under all combinations of climate and management and that the effect of climate change is much smaller than the effect of changes in agricultural management. Most croplands in China show a significant increase in SOC stocks, while very few zones (mainly in northeastern China) show a decrease. Rice paddy soils under the intensive farming management scenario show higher rates of carbon sequestration than dry-land soils. The maximum carbon sequestration potential of the croplands of China is estimated to be 2.39 Pg C under S2. Annual increases in SOC stocks could offset a maximum of 2.9% of the CO2 emissions from fossil-fuel combustion in 2009. These results suggest that China's croplands, especially rice paddies, may play an important role in C sequestration and future climate change mitigation. (C) 2013 Elsevier B.V. All rights reserved.
关键词	Agro-C model Soil organic carbon Climate change Agricultural management Croplands
学科领域	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
DOI	10.1016/j.agee.2013.06.008
收录类别	SCI
语种	英语
WOS关键词	CLIMATE-CHANGE ; TEMPORAL PATTERNS ; CROP YIELD ; SEQUESTRATION ; IMPACTS ; DYNAMICS ; TILLAGE ; QUALITY ; STORAGE ; CO2
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000325595800012
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1873-2305
资助机构	Ministry of Science and Technology of China(Ministry of Science and Technology, China) ; CAS Strategic Priority Research Program ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC))
作者邮箱	Zhang, Wen/AAH-6060-2020 ; Huang, Yao/GQH-3308-2022 ; LAPC, IAP/AAI-6991-2020 ; huang, yao/GWR-5388-2022 ; IAP, LAPC/AAI-6390-2020 ; Yu, Yongqiang/C-9661-2011 ; Huang, Yao/O-6832-2014
引用统计	被引频次：51[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28181
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, LAPC, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Yu, Yongqiang,Huang, Yao,Zhang, Wen. Projected changes in soil organic carbon stocks of China's croplands under different agricultural managements, 2011-2050[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2013,178:109-120.
APA	Yu, Yongqiang,Huang, Yao,&Zhang, Wen.(2013).Projected changes in soil organic carbon stocks of China's croplands under different agricultural managements, 2011-2050.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,178,109-120.
MLA	Yu, Yongqiang,et al."Projected changes in soil organic carbon stocks of China's croplands under different agricultural managements, 2011-2050".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 178(2013):109-120.

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