干旱区生态环境知识资源中心(Arid): Responses of soil respiration to rainfall depth and frequency in semiarid grassland communities

Arid

DOI	10.1002/eco.2326
	Responses of soil respiration to rainfall depth and frequency in semiarid grassland communities
	Zhang, He; Xiong, Peifeng; Jia, Zhao; Zhou, Junjie; Niu, Furong; Xu, Bingcheng
通讯作者	Xu, BC (corresponding author), Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2021
英文摘要	Climate change is increasing the extreme precipitation depth and frequency, which may cause a strong response of ecological processes in drought regions. To investigate how rainfall depth and frequency alter soil respiration (SR), a rainfall simulation experiment was conducted in grassland communities dominated by Artemisia gmelinii and Lespedeza davurica in Loess Plateau of China. SR rate (R-s), soil temperature (T-s) and soil volumetric water content (S-v) were monitored before and after the rainfall treatments, that is, four depths (5, 10, 20 and 40 mm) and three frequencies (40 mm x 1, 20 mm x 2 and 10 mm x 4) during the growing season (June to September). Results indicated that the response magnitude of R-s increased with rainfall depths, reaching the maximum under 40 mm, and the increments were tightly related to rainfall frequency and community type. The increase and mean value of R-s in A. gmelinii community were significantly higher than those in L. davurica and bare land under same rainfall depth. L. davurica community was more sensitive to rainfall lower than 10 mm, whereas it had weaker but longer response under rainfall larger than 10 mm compared with A. gmelinii community. Successive rainfall events dampened the pulse effect of R-s but generated more cumulative CO2 emission in vegetation communities. T-s and S-v varied significantly with rainfall depth and co-regulated SR. These findings implied more CO2 will be released from soil in the semiarid grasslands under extreme and successive rainfalls and emphasized the importance of species impact on SR for soil carbon evaluation under future rainfall regimes.
英文关键词	grassland community Q(10) value rainfall depth rainfall frequency soil respiration
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000672170500001
WOS关键词	LOESS PLATEAU ; PRECIPITATION VARIABILITY ; DIFFERENTIAL RESPONSES ; TEMPERATURE-DEPENDENCE ; CARBON SEQUESTRATION ; MICROBIAL BIOMASS ; ORGANIC-CARBON ; PULSES ; WATER ; DESERT
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	西北农林科技大学 ; University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362974
作者单位	[Zhang, He; Jia, Zhao; Zhou, Junjie; Xu, Bingcheng] Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China; [Xiong, Peifeng] Anhui Agr Univ, Coll Resources & Environm, Hefei, Peoples R China; [Niu, Furong] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ USA; [Xu, Bingcheng] Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, He,Xiong, Peifeng,Jia, Zhao,et al. Responses of soil respiration to rainfall depth and frequency in semiarid grassland communities[J]. 西北农林科技大学, University of Arizona,2021.
APA	Zhang, He,Xiong, Peifeng,Jia, Zhao,Zhou, Junjie,Niu, Furong,&Xu, Bingcheng.(2021).Responses of soil respiration to rainfall depth and frequency in semiarid grassland communities.ECOHYDROLOGY.
MLA	Zhang, He,et al."Responses of soil respiration to rainfall depth and frequency in semiarid grassland communities".ECOHYDROLOGY (2021).