IB-CAS  > 植被与环境变化国家重点实验室
C-4 herbs dominate the reservoir flood area of the Three Gorges Reservoir
Zhang, Aiying1; Xie, Zongqiang2
2021
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
卷号755
摘要Dam operations can dramatically degenerate riparian vegetation. To improve the restoration practices of reservoir riparian vegetation, it is important to understand which and how a dominant species physiologically and ecologically maintain high fitness in this type of ecosystems. We explored the compositional change of riparian plants during the long-termflood-dry-flood cycle in the reservoir flood area (RFA) of the Three Gorges Reservoir Area (TGRA), China. In total 769 vascular plant species (belonging to 415 genera in 122 families) existed in the study area before damming (prior to 2006, i.e. the natural riparian zone). Following damming (2008-2018), plant species diversity rapidly declined, with only 51 species identified in 2018 (45 genera in 22 families). Before damming, perennial herbs, annual herbs and shrubs co-dominated the study area. After damming, the proportion of shrubs decreased significantly, and the proportion of annuals to total plants increased by 20%. Alien invasive species proportion increased from 5% to 18%. Notably, the proportion of C-4 species increased significantly from 7% to 31%. Ten of the 16 dominant species in RFA since 2015 were C-4 Poaceae species. Our study indicates that dam construction could cause severe biodiversity loss of riparian plants and draw alien species invasion. Besides, C-4 herbs would dominate the RFA. A higher photosynthetic rate could help C-4 plants grow faster to cope with the nitrogen deficiency and short growth cycles in RFA. Hence, screening C-4 herbs for vegetation restoration might aid in maintaining biodiversity and ecosystem functions in flood-dry-flood reservoir flood areas. (C) 2020 Elsevier B.V. All rights reserved.
关键词Clonal Cynodon dactylon Alien invasive species Poaceae Vegetation restoration
学科领域Environmental Sciences
DOI10.1016/j.scitotenv.2020.142479
收录类别SCI
语种英语
WOS关键词RIPARIAN VEGETATION ; PHOTOSYNTHETIC CAPACITY ; RECOVERY GROWTH ; USE EFFICIENCY ; PLANTS ; SUBMERGENCE ; ZONES
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号WOS:000600537400011
出版者ELSEVIER
文献子类Article
出版地AMSTERDAM
EISSN1879-1026
资助机构National Natural Science Foundation of China [31901211] ; Chinese Academy of Sciences [KZCX2-XB3-09]
作者邮箱xie@ibcas.ac.cn
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/26637
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China
2.Zhejiang Univ, MOE Key Lab Biosyst Homeostasis & Protect, Coll Life Sci, 866 Yuhangtang Rd, Hangzhou 310058, Zhejiang, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
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Zhang, Aiying,Xie, Zongqiang. C-4 herbs dominate the reservoir flood area of the Three Gorges Reservoir[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,755.
APA Zhang, Aiying,&Xie, Zongqiang.(2021).C-4 herbs dominate the reservoir flood area of the Three Gorges Reservoir.SCIENCE OF THE TOTAL ENVIRONMENT,755.
MLA Zhang, Aiying,et al."C-4 herbs dominate the reservoir flood area of the Three Gorges Reservoir".SCIENCE OF THE TOTAL ENVIRONMENT 755(2021).
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