干旱区生态环境知识资源中心(Arid): Modeling the contribution of abiotic exchange to CO

Arid

	Modeling the contribution of abiotic exchange to CO_2 flux in alkaline soils of arid areas
	Wang Wenfeng; Chen Xi; Luo Geping; Li Longhui
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2014
卷号	6 期号:1 页码:27-36
英文摘要	Recent studies on alkaline soils of arid areas suggest a possible contribution of abiotic exchange to soil CO_2 flux (F_c). However, both the overall contribution of abiotic CO_2 exchange and its drivers remain unknown. Here we analyzed the environmental variables suggested as possible drivers by previous studies and constructed a function of these variables to model the contribution of abiotic exchange to Fc in alkaline soils of arid areas. An automated flux system was employed to measure Fc in the Manas River Basin of Xinjiang Uygur autonomous region, China. Soil pH, soil temperature at 0-5 cm (T_s), soil volumetric water content at 0-5 cm (theta_s) and air temperature at 10 cm above the soil surface (T_(as)) were simultaneously analyzed. Results highlight reduced sensitivity of F_c to T_s and good prediction of F_c by the model F_c=R_(10)Q)(10)~((Tas-10)/10)+r_7q_7~((pH-7))+lambdaT_(as)+mutheta_s+e which represents F_c as a sum of biotic and abiotic components. This presents an approximate method to quantify the contribution of soil abiotic CO_2 exchange to F_c in alkaline soils of arid areas.
英文关键词	soil respiration temperature sensitivity Q_(10) model soil abiotic CO_2 exchange soil alkalinity
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5048388
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335314
作者单位	Wang Wenfeng, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Chen Xi, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Luo Geping, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.; Li Longhui, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, State Key Laboratory of Desert and Oasis Ecology, Urumqi, Xinjiang 830011, China.
推荐引用方式 GB/T 7714	Wang Wenfeng,Chen Xi,Luo Geping,et al. Modeling the contribution of abiotic exchange to CO_2 flux in alkaline soils of arid areas[J],2014,6(1):27-36.
APA	Wang Wenfeng,Chen Xi,Luo Geping,&Li Longhui.(2014).Modeling the contribution of abiotic exchange to CO_2 flux in alkaline soils of arid areas.Journal of Arid Land,6(1),27-36.
MLA	Wang Wenfeng,et al."Modeling the contribution of abiotic exchange to CO_2 flux in alkaline soils of arid areas".Journal of Arid Land 6.1(2014):27-36.