Knowledge Management System of Northwest Institute of Plateau Biology, CAS
| Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe | |
| Song, Jian1; Wu, Dandan2,3; Shao, Pengshuai3,4; Hui, Dafeng1,5; Wan, Shiqiang1 | |
| 2015-06-01 | |
| 发表期刊 | OECOLOGIA
 |
| 卷号 | 178期号:2页码:579-590 |
| 文章类型 | Article |
| 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.; 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. |
| 关键词 | Climate Change Insect Outbreaks Carbon Cycling Soil Nitrogen Plant Growth |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 关键词[WOS] | PERIODICAL CICADAS ; TALLGRASS PRAIRIE ; MIGRATORY LOCUST ; INSECT HERBIVORY ; INVERTEBRATE HERBIVORY ; DECOMPOSITION RATES ; WESTERN WHEATGRASS ; RESOURCE PULSES ; DESERT LOCUST ; BALSAM FIR |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Ecology |
| WOS记录号 | WOS:000354900700024 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://210.75.249.4/handle/363003/5548 |
| 专题 | 中国科学院西北高原生物研究所 |
| 作者单位 | 1.Henan Univ, State Key Lab Cotton Biol, Coll Life Sci, Key Lab Plant Stress Biol, Kaifeng 475004, Henan, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 5.Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USA |
| 推荐引用方式 GB/T 7714 | Song, Jian,Wu, Dandan,Shao, Pengshuai,et al. Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe[J]. OECOLOGIA,2015,178(2):579-590. |
| APA | Song, Jian,Wu, Dandan,Shao, Pengshuai,Hui, Dafeng,&Wan, Shiqiang.(2015).Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe.OECOLOGIA,178(2),579-590. |
| MLA | Song, Jian,et al."Ecosystem carbon exchange in response to locust outbreaks in a temperate steppe".OECOLOGIA 178.2(2015):579-590. |
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