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Precipitation reduction alters herbaceous community structure and composition in a savanna

文献类型：期刊论文

作者Jin, YQ; Li, J; Liu, CG; Liu, YT; Zhang, YP; Song, QH; Sha, LQ; Balasubramanian, D; Chen, AG; Yang, DX
刊名JOURNAL OF VEGETATION SCIENCE
出版日期2019-09
卷号30期号:5页码:821-831
关键词community dynamics drought stress nonlinear response plant functional groups species diversity
ISSN号1100-9233
DOI10.1111/jvs.12766
产权排序[Jin, Yanqiang ; Li, Jing ; Liu, Yuntong ; Zhang, Yiping ; Song, Qinghai ; Sha, Liqing ; Balasubramanian, Durairaj ; Yang, Daxin] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Menglun 666303, Peoples R China ; [Jin, Yanqiang ; Liu, Chenggang] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Plant Resources & Sustainable Us, Menglun, Peoples R China ; [Li, Jing] Univ Chinese Acad Sci, Beijing, Peoples R China ; [Chen, Aiguo ; Yang, Daxin] Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Yuanjiang Savanna Ecosyst Res Stn, Yuanjiang, Peoples R China ; [Li, Peiguang] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yellow River Delta Ecol Res Stn Coastal Wetland, Yantai, Peoples R China
文献子类Article
英文摘要Questions In the changing climate scenario, the decline in precipitation is expected to alter water availability for plants, which in turn affects plant community structure and composition. The responses of community composition and structure to declines in precipitation are well documented in other biomes but remain understudied in water-limited savannas. Location A savanna ecosystem in southwest China. Methods We used a four-year (2014-2017) precipitation manipulation experiment to examine changes in herbaceous community composition and structure across the species, functional group and community levels under precipitation reduction. Results Precipitation reduction significantly decreased the average height and percentage cover of the herbaceous community, while increasing species richness and the Pielou evenness index. Precipitation reduction significantly decreased average height, percentage cover and relative abundance of graminoids and perennials, but increased those of forbs and annuals. Precipitation reduction prompted a shift in the dominant species of the herbaceous community towards Fimbristylis monostachya. Conclusions The results show that precipitation reduction changed the composition and structure of the herbaceous community of this savanna. Furthermore, they provide strong evidence that changes in herbaceous community structure and composition in response to the intensity and duration of precipitation reduction in this savanna exhibited relatively low thresholds, which suggests that the herbaceous community's response to a decline in precipitation was essentially nonlinear. These findings imply that even relatively small declines in precipitation may stimulate shifts in plant community structure and composition and affect the function and stability of savanna ecosystems.
WOS关键词PLANT DIVERSITY ; CLIMATE-CHANGE ; RAINFALL VARIABILITY ; FUNCTIONAL DIVERSITY ; ECOSYSTEM FUNCTION ; SPECIES-DIVERSITY ; DROUGHT ; DYNAMICS ; RESISTANCE ; PRODUCTIVITY
WOS研究方向Plant Sciences ; Ecology ; Forestry
语种英语
WOS记录号WOS:000474151700001
资助机构National Key Research and Development Program of China [2016YFC0502105] ; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China [U1602234, 31600390] ; Natural Science Foundation of Yunnan Province, ChinaNatural Science Foundation of Yunnan Province [2017FB077, 2018FB042] ; CAS 135 project [2017XTBG-T01, 2017XTBG-F01]
源URL[http://ir.yic.ac.cn/handle/133337/24909]  
专题中国科学院黄河三角洲滨海湿地试验站
中国科学院烟台海岸带研究所
作者单位1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Yuanjiang Savanna Ecosyst Res Stn, Yuanjiang, Peoples R China;
2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Plant Resources & Sustainable Us, Menglun, Peoples R China;
3.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Menglun 666303, Peoples R China;
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yellow River Delta Ecol Res Stn Coastal Wetland, Yantai, Peoples R China
5.Univ Chinese Acad Sci, Beijing, Peoples R China;
推荐引用方式
GB/T 7714		 Jin, YQ,Li, J,Liu, CG,et al. Precipitation reduction alters herbaceous community structure and composition in a savanna[J]. JOURNAL OF VEGETATION SCIENCE,2019,30(5):821-831.
APA Jin, YQ.,Li, J.,Liu, CG.,Liu, YT.,Zhang, YP.,...&Li, PG.(2019).Precipitation reduction alters herbaceous community structure and composition in a savanna.JOURNAL OF VEGETATION SCIENCE,30(5),821-831.
MLA Jin, YQ,et al."Precipitation reduction alters herbaceous community structure and composition in a savanna".JOURNAL OF VEGETATION SCIENCE 30.5(2019):821-831.

入库方式： OAI收割

来源：烟台海岸带研究所

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