Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe

doi:10.1007/s00442-015-3248-z

	Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe
	Wan, Shiqiang 3; Song, Jian 3; Wu, Dandan 1,4; Hui, Dafeng 2,3; Shao, Pengshuai 1,5
刊名	OECOLOGIA
	2015-06-01
卷号	178 期号:2 页码:579-590
关键词	Climate Change Insect Outbreaks Carbon Cycling Soil Nitrogen Plant Growth
ISSN号	0029-8549
DOI	10.1007/s00442-015-3248-z
英文摘要	It is predicted that locust outbreaks will occur more frequently under future climate change scenarios, with consequent effects on ecological goods and services. A field manipulative experiment was conducted to examine the responses of gross ecosystem productivity (GEP), net ecosystem carbon dioxide (CO2) exchange (NEE), ecosystem respiration (ER), and soil respiration (SR) to locust outbreaks in a temperate steppe of northern China from 2010 to 2011. Two processes related to locust outbreaks, natural locust feeding and carcass deposition, were mimicked by clipping 80 % of aboveground biomass and adding locust carcasses, respectively. Ecosystem carbon (C) exchange (i.e., GEP, NEE, ER, and SR) was suppressed by locust feeding in 2010, but stimulated by locust carcass deposition in both years (except SR in 2011). Experimental locust outbreaks (i.e., clipping plus locust carcass addition) decreased GEP and NEE in 2010 whereas they increased GEP, NEE, and ER in 2011, leading to neutral changes in GEP, NEE, and SR across the 2 years. The responses of ecosystem C exchange could have been due to the changes in soil ammonium nitrogen, community cover, and aboveground net primary productivity. Our findings of the transient and neutral changes in ecosystem C cycling under locust outbreaks highlight the importance of resistance, resilience, and stability of the temperate steppe in maintaining reliable ecosystem services, and facilitate the projections of ecosystem functioning in response to natural disturbance and climate change.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000354900700024
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122051]
专题	中国科学院沈阳应用生态研究所
通讯作者	Wan, Shiqiang
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USA 3.Henan Univ, State Key Lab Cotton Biol, Coll Life Sci, Key Lab Plant Stress Biol, Kaifeng 475004, Henan, Peoples R China 4.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 5.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China
推荐引用方式 GB/T 7714	Wan, Shiqiang,Song, Jian,Wu, Dandan,et al. Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe[J]. OECOLOGIA,2015,178(2):579-590.
APA	Wan, Shiqiang,Song, Jian,Wu, Dandan,Hui, Dafeng,&Shao, Pengshuai.(2015).Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe.OECOLOGIA,178(2),579-590.
MLA	Wan, Shiqiang,et al."Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe".OECOLOGIA 178.2(2015):579-590.