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Water level requirements of a Carex hygrophyte in Yangtze floodplain lakes
Yuan, Saibo1,2; Yang, Zhendong1,2; Liu, Xueqin1; Wang, Hongzhu1
2019-04-01
Source PublicationECOLOGICAL ENGINEERING
ISSN0925-8574
Volume129Issue:1Pages:29-37
AbstractWater level management is of great importance regarding conservation and rehabilitation of wetland plants. However, water level requirements (WLRs) of these plants are not well studied. In the present study, we conducted a systematic assessment of WLRs of Carex cinerascens regarding to each life history stage, based on field investigations and a series of simulation experiments in the Yangtze River floodplain. Results showed that C. cinerascens was well developed in lakes with intermittent water level fluctuations. Its rhizomes could not emerge underwater or in water-saturated conditions, and the optimum soil moisture for emergence was 15-30% with air temperature above 6 degrees C. Its growth was prohibited when the whole plant was inundated (i.e. inundation depth > plant height), and when rate of water level change exceeded 1.2 cm/d. Although summer inundation was not essential for C. cinerascens development, it was beneficial to the plant for excluding competitive species. The timing of habitat inundation was suggested to be after May when the plant matured. The timing of rhizome emergence in the second growing season was determined by when the habitat was exposed. With inclusion of temperature limits, the optimum timing of habitat exposure in autumn was October, and the duration of summer inundation was therefore 0-150 days. We finally combined WLRs of each life history stage and established an integrated WLRs model of C. cinerascens in Yangtze floodplain lakes. It is the first time that such a WLRs model was proposed for hygrophytes in lakes. Moreover, we presented a methodology for assessment of WLRs of hygrophytes which can be widely used in riverine lakes as well as other wetlands. Our results provide important implications for water level management regarding the conservation and rehabilitation of wetland plants.
SubtypeArticle
KeywordLife History Wetland Plant Water Level Fluctuations Rehabilitation Field Investigation Simulation Experiment
DOI10.1016/j.ecoleng.2019.01.006
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China(41371054 ; 51579234) ; National Natural Science Foundation of China(41371054 ; 51579234)
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Engineering
WOS SubjectEcology ; Engineering, Environmental ; Environmental Sciences
WOS KeywordVEGETATIVE REPRODUCTION ; RHIZOMATIC GERMINATION ; BIOMASS ALLOCATION ; ZIZANIA-LATIFOLIA ; FLUCTUATIONS ; GROWTH ; RIVER ; RESPONSES ; DEPTH ; RESTORATION
WOS IDWOS:000458249600004
Funding OrganizationNational Natural Science Foundation of China(41371054 ; 51579234) ; National Natural Science Foundation of China(41371054 ; 51579234)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/72363
Collection淡水生态学研究中心
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yuan, Saibo,Yang, Zhendong,Liu, Xueqin,et al. Water level requirements of a Carex hygrophyte in Yangtze floodplain lakes[J]. ECOLOGICAL ENGINEERING,2019,129(1):29-37.
APA Yuan, Saibo,Yang, Zhendong,Liu, Xueqin,&Wang, Hongzhu.(2019).Water level requirements of a Carex hygrophyte in Yangtze floodplain lakes.ECOLOGICAL ENGINEERING,129(1),29-37.
MLA Yuan, Saibo,et al."Water level requirements of a Carex hygrophyte in Yangtze floodplain lakes".ECOLOGICAL ENGINEERING 129.1(2019):29-37.
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