Biotic and abiotic controls in determining exceedingly variable responses of ecosystem functions to extreme seasonal precipitation in a mesophytic alpine grassland
文献类型：期刊论文
| 作者 | Sun, G; Wang, ZY; Zhu-Barker, X; Zhang, NN; Wu, N; Liu, L; Lei, YB; Sun, G (reprint author), Chinese Acad Sci, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu 610041, Peoples R China.; Sun, G (reprint author), Chinese Acad Sci, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Chengdu Inst Biol, Chengdu 610041, Peoples R China.; Lei, YB (reprint author), Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China. |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 228页码:180-190 |
| 关键词 | Extreme Precipitation Seasonality Biomass Accumulation And Allocation Resistance And Resilience Nutrient Cycling Mesophytic Alpine Grasslanda |
| DOI | 10.1016/j.agrformet.2016.07.010 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | As a result of global climate change, frequent and intensive extreme climate events are observed and predicted. These extreme climate events can change ecosystem functions through driving plant growth and mortality, as well as ecological and evolutionary processes into different directions. We simulated a 1-in-100-year extreme precipitation event in different plant growth seasons (i.e. spring, summer, or autumn) to investigate the functional responses of a mesophytic alpine grassland ecosystem to climate change in the Tibetan plateau. The results demonstrated that the seasonal distribution of extreme precipitation is a critical factor in determining soil microbial- and plant-productivity. The response of vegetation net primary productivity (NPP) to extreme precipitation depends on the growth seasons and plant types. Total NPP in the treatments experienced extreme precipitation in the early (spring), mid- (summer) and late (autumn) plant growth seasons were significant lower, higher, and no difference, respectively, compared with the control. Soil temperature and moisture were the key abiotic factors that affected ecosystem functions. For example, in the early plant growth season, no changes of soil moisture and the decreased temperature in response to the extreme precipitation resulted in a substantial decline in NPP. By contrast, in the mid-plant growth season, higher temperature and soil moisture elicited positive synergistic effects on plant growth and soil microbial processes. The increased sensitivity of above-ground NPP and the shift of dominant species from sedges to less palatable forbs might inevitably exaggerate the degradation of this grassland. Nevertheless, a high resilience index in the related ecological processes could potentially contribute to the grassland acclimation and stability, as most parameters returned to the similar levels as in the control after the extreme events ceased. Therefore, several synergistic or antagonistic mechanisms are hypothesized to operate in parallel or at different levels of organization and timescales. Further studies involving a range of different potential scenarios and longer periods are needed to predict the future climate change impacts on mesophytic grassland. (C) 2016 Elsevier B.V. All rights reserved. |
| 学科主题 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 资助项目 | 中国科学院山地生态恢复与生物资源利用重点实验室 |
| 语种 | 英语 |
| 资助机构 | National Science Foundation of China [31500346, 31350110328] ; National Science Foundation of China [31500346, 31350110328] ; Ministry of Science and Technology of the People's Republic of China [SQ2016YFSF030224] ; Ministry of Science and Technology of the People's Republic of China [SQ2016YFSF030224] ; Chinese Academy of Sciences (Western Light Program) [KFJ-SW-STS-177] ; Chinese Academy of Sciences (Western Light Program) [KFJ-SW-STS-177] ; Sichuan Science & Technology Bureau [2014HH0017, 2015HH0025, 2015JY0231, 2016HH0082] ; Sichuan Science & Technology Bureau [2014HH0017, 2015HH0025, 2015JY0231, 2016HH0082] ; Youth Professor Program of Chengdu Institute of Biology ; Youth Professor Program of Chengdu Institute of Biology ; National Science Foundation of China [31500346, 31350110328] ; National Science Foundation of China [31500346, 31350110328] ; Ministry of Science and Technology of the People's Republic of China [SQ2016YFSF030224] ; Ministry of Science and Technology of the People's Republic of China [SQ2016YFSF030224] ; Chinese Academy of Sciences (Western Light Program) [KFJ-SW-STS-177] ; Chinese Academy of Sciences (Western Light Program) [KFJ-SW-STS-177] ; Sichuan Science & Technology Bureau [2014HH0017, 2015HH0025, 2015JY0231, 2016HH0082] ; Sichuan Science & Technology Bureau [2014HH0017, 2015HH0025, 2015JY0231, 2016HH0082] ; Youth Professor Program of Chengdu Institute of Biology ; Youth Professor Program of Chengdu Institute of Biology |
| 源URL | [http://210.75.237.14/handle/351003/28094]  |
| 专题 | 成都生物研究所_生态研究 |
| 通讯作者 | Sun, G (reprint author), Chinese Acad Sci, Key Lab Mt Ecol Restorat & Bioresource Utilizat, Chengdu 610041, Peoples R China.; Sun, G (reprint author), Chinese Acad Sci, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Chengdu Inst Biol, Chengdu 610041, Peoples R China.; Lei, YB (reprint author), Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Sun, G,Wang, ZY,Zhu-Barker, X,et al. Biotic and abiotic controls in determining exceedingly variable responses of ecosystem functions to extreme seasonal precipitation in a mesophytic alpine grassland[J]. AGRICULTURAL AND FOREST METEOROLOGY,2016,228:180-190. |
| APA | Sun, G.,Wang, ZY.,Zhu-Barker, X.,Zhang, NN.,Wu, N.,...&Lei, YB .(2016).Biotic and abiotic controls in determining exceedingly variable responses of ecosystem functions to extreme seasonal precipitation in a mesophytic alpine grassland.AGRICULTURAL AND FOREST METEOROLOGY,228,180-190. |
| MLA | Sun, G,et al."Biotic and abiotic controls in determining exceedingly variable responses of ecosystem functions to extreme seasonal precipitation in a mesophytic alpine grassland".AGRICULTURAL AND FOREST METEOROLOGY 228(2016):180-190. |
入库方式： OAI收割
来源：成都生物研究所
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