干旱区生态环境知识资源中心(Arid): Responses of soil respiration to spring drought and precipitation pulse in a temperate oak forest

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DOI	10.1016/j.agrformet.2019.01.029
	Responses of soil respiration to spring drought and precipitation pulse in a temperate oak forest
	Liu, Yanchun 1; Zhao, Cancan 1; Shang, Qing 2; Su, Lei 1; Wang, Lei 1
通讯作者	Wang, Lei
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2019
卷号	268 页码:289-298
英文摘要	As- a consequence of climate change, a higher frequency of spring drought periods followed by episodic precipitation events is predicted for Central China. Little is known about the effect of drought intensity on the response of soil CO2 efflux to discrete precipitation events in forest ecosystems. A field experiment was conducted to assess the responses of soil CO2 efflux to spring drought and precipitation pulse in an oak forest located at climatic transitional zone in Central China. Soil respiration (SR) and heterotrophic respiration (HR) under 30-day drought showed higher responses to precipitation pulse than those under control and 20-day drought treatments. Regardless of drought intensity, precipitation events of 5, 10, and 20 mm levels significantly increased SR by 86.0, 103.4, and 175.2%, and HR by 108.4, 129.5, and 161.5% when compared with non-water addition plots, respectively. Severe drought treatment (30-day drought) amplified the contribution of HR to SR in response to precipitation pulse (84.5% vs 78.3% for the control). Drought intensity rather than precipitation amount showed substantial influence on total carbon loss through SR and HR. These findings highlight the importance of incorporating both drought intensity and precipitation events and their impacts on soil carbon cycling into future predictions of forest ecosystems under climate change.
英文关键词	Soil carbon emission Drought intensity Precipitation event Heterotrophic respiration Birch effect
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000460844700029
WOS关键词	CO2 EFFLUX ; ECOSYSTEM RESPIRATION ; SEMIARID GRASSLAND ; MICROBIAL BIOMASS ; SONORAN DESERT ; CLIMATE-CHANGE ; CARBON FLUXES ; WATER CONTENT ; GAS-EXCHANGE ; CHINA
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213944
作者单位	1.Henan Univ, Sch Life Sci, State Key Lab Cotton Biol, Kaifeng 475004, Henan, Peoples R China; 2.Yellow River Conservancy Tech Inst, Kaifeng 475004, Henan, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yanchun,Zhao, Cancan,Shang, Qing,et al. Responses of soil respiration to spring drought and precipitation pulse in a temperate oak forest[J],2019,268:289-298.
APA	Liu, Yanchun,Zhao, Cancan,Shang, Qing,Su, Lei,&Wang, Lei.(2019).Responses of soil respiration to spring drought and precipitation pulse in a temperate oak forest.AGRICULTURAL AND FOREST METEOROLOGY,268,289-298.
MLA	Liu, Yanchun,et al."Responses of soil respiration to spring drought and precipitation pulse in a temperate oak forest".AGRICULTURAL AND FOREST METEOROLOGY 268(2019):289-298.