干旱区生态环境知识资源中心(Arid): Simulated soil organic carbon stocks in northern China's cropland under different climate change scenarios

Arid

DOI	10.1016/j.still.2021.105088
	Simulated soil organic carbon stocks in northern China's cropland under different climate change scenarios
	Jia, H. X.; Wang, X.; Xiao, J. J.; Jang, S. L.; Li, J.; Zhao, Y. F.; Ye, W. L.
通讯作者	Wang, X (corresponding author), Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China. ; Wang, X (corresponding author), Lanzhou Univ, Key Lab Environm Pollut Predict & Control, Lanzhou 730000, Peoples R China.
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2021
卷号	213
英文摘要	The accumulation and dynamic stock of soil organic carbon (SOC) in agricultural land are highly sensitive to changes in climate. However, there is uncertainty about how the global SOC cycle will respond to future climate change. In order to assess changes in SOC storage, basing on the historical weather data and field observations (1951-2018), the study used the DeNitrification-DeComposition (DNDC) model to simulate future SOC storage in an arid oasis under three representational concentration paths (RCPs): RCP2.6, low-end path; RCP4.5, middle stable path; and RCP8.5, high-end path) for the period from 2018 to 2086. Farmland soil in the Yanqi Basin in northern China was divided into grid units using ArcGIS, and then kriging interpolation was used to extract the mean value of the 200 grid units to calculate regional changes in SOC storage. The model indicated that more than 92.75 % of the measured results accurately simulated the SOC storage in Yanqi Basin cropland. The measured SOC storage in the Yanqi Basin was 1.32 Tg C in 2018. The range of SOC density was 653.27-5527.04 kg C/hm 2 under the historical climate scenario, and 1863.99-4581.16 kg C/hm(2), 2372.74-6910.15 kg C/hm(2), and 623.656-5431.95 kg C/hm(2) under the RCP 2.6, RCP 4.5, and RCP 8.5 scenarios, respectively. The simulation results show that, compared with the SOC stock in 2018, the SOC stocks in the oasis area in the future will show a rapid decline under the historical climate scenario (7.6 % decrease) as well as in the RCP 2.6 (3% decrease), RCP 4.5 (9.17 % decrease), and RCP 8.5 (16 % decrease) scenarios. These results indicate that organic carbon outputs and density will decrease faster under high emissions and more slowly under low emissions. This study provides supporting data and a scientific basis for increasing soil organic carbon in cropland and for the management of oasis soil to mitigate the effects of future climate change.
英文关键词	DeNitrification-DeComposition (DNDC) Soil organic carbon storage Climate change scenarios Representational concentration paths (RCPs) Cropland
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000687973000003
WOS关键词	LAND-USE ; MICROBIAL CARBON ; DNDC ; TEMPERATURE ; DYNAMICS ; ROTHC ; MODEL ; PRECIPITATION ; PREDICTION ; MANAGEMENT
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364697
作者单位	[Jia, H. X.; Wang, X.; Xiao, J. J.; Jang, S. L.; Li, J.; Zhao, Y. F.] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China; [Jia, H. X.; Wang, X.; Xiao, J. J.; Jang, S. L.; Li, J.; Zhao, Y. F.] Lanzhou Univ, Key Lab Environm Pollut Predict & Control, Lanzhou 730000, Peoples R China; [Jia, H. X.] Shanxi Inst Energy, Jinzhong 030600, Shanxi, Peoples R China; [Li, J.; Ye, W. L.] Gansu Acad Sci, Inst Geol Hazards Prevent, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Jia, H. X.,Wang, X.,Xiao, J. J.,et al. Simulated soil organic carbon stocks in northern China's cropland under different climate change scenarios[J]. 兰州大学,2021,213.
APA	Jia, H. X..,Wang, X..,Xiao, J. J..,Jang, S. L..,Li, J..,...&Ye, W. L..(2021).Simulated soil organic carbon stocks in northern China's cropland under different climate change scenarios.SOIL & TILLAGE RESEARCH,213.
MLA	Jia, H. X.,et al."Simulated soil organic carbon stocks in northern China's cropland under different climate change scenarios".SOIL & TILLAGE RESEARCH 213(2021).