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Effects of water depth on the biomass of two dominant submerged macrophyte species in floodplain lakes during flood and dry seasons

文献类型：期刊论文

作者Meng, Zhujian3,4; Yu, Xiubo3,4; Xia, Shaoxia3,4; Zhang, Quanjun5; Ma, Xu2,6; Yu, Dingkun1
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2023-06-15
卷号877页码:9
ISSN号0048-9697
关键词Aquatic environmental variables Submerged macrophyte biomass Direct and indirect effects Floodplain
DOI10.1016/j.scitotenv.2023.162690
通讯作者Yu, Xiubo(yuxb@igsnrr.ac.cn) ; Xia, Shaoxia(xiasx@igsnrr.ac.cn)
英文摘要Floodplain lakes share characteristics of both deep and shallow lakes throughout any given year. Seasonal fluctuations in their water depth drive changes in nutrients and total primary productivity, which directly and indirectly affect submerged macrophyte biomass. To investigate how water depth and environmental variables affect submerged macrophyte biomass, we surveyed six sub-lakes in the Poyang Lake floodplain, China, during the flood and dry seasons of 2021. Dominant submerged macrophytes include Vallisneria spinulosa and Hydrilla verticillata. The effect of water depth on the biomass of these macrophytes varied between the flood and dry seasons. In the flood season, there was a direct effect of water depth on biomass, while in the dry season only an indirect effect was observed. During the flood season, the direct effect of water depth on the biomass of V. spinulosa was less than the indirect effect, with water depth primarily affecting the total nitrogen, total phosphorus and water column transparency. Water depth directly, positively affected H. verticillata biomass, with this effect being greater than the indirect effect by affecting the carbon, nitrogen and phosphorus content in the water column and sediment. During the dry season, water depth affected H. verticillata biomass indirectly through sediment carbon and nitrogen content, while for V. spinulosa, the effect on biomass was indirect through carbon content of the sediment and water column. The main environmental variables affecting submerged macrophyte biomass in the Poyang Lake floodplain during the flood and dry seasons, and the mechanisms through which water depth affects dominant submerged macrophyte biomass, are identifled. An understanding of these variables and mechanisms will enable improved management and restoration of wetland.
WOS关键词LEVEL FLUCTUATIONS AFFECT ; POYANG LAKE ; SHALLOW LAKES ; HYDRILLA-VERTICILLATA ; PHOSPHORUS LOADINGS ; AQUATIC VEGETATION ; ORGANIC-MATTER ; SEDIMENT ; NITROGEN ; GROWTH
资助项目National Natural Science Foundation of China[41971133] ; Strategic Priority Research Program of the Chinese Academy of Science, China[XDA23040203] ; FAO-GEF Jiangxi Protected Area System Project
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:001055338000001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science, China ; FAO-GEF Jiangxi Protected Area System Project
源URL[http://ir.igsnrr.ac.cn/handle/311030/196668]  
专题中国科学院地理科学与资源研究所
通讯作者Yu, Xiubo; Xia, Shaoxia
作者单位1.Jiangxi Poyang Lake Natl Nat Reserve Author, Nanchang 330038, Peoples R China
2.China Inst Water Resources & Hydropower Res, Beijing 100038, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.CMA Meteorol Observat Ctr MOC, Beijing 100081, Peoples R China
6.State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China
推荐引用方式
GB/T 7714		 Meng, Zhujian,Yu, Xiubo,Xia, Shaoxia,et al. Effects of water depth on the biomass of two dominant submerged macrophyte species in floodplain lakes during flood and dry seasons[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,877:9.
APA Meng, Zhujian,Yu, Xiubo,Xia, Shaoxia,Zhang, Quanjun,Ma, Xu,&Yu, Dingkun.(2023).Effects of water depth on the biomass of two dominant submerged macrophyte species in floodplain lakes during flood and dry seasons.SCIENCE OF THE TOTAL ENVIRONMENT,877,9.
MLA Meng, Zhujian,et al."Effects of water depth on the biomass of two dominant submerged macrophyte species in floodplain lakes during flood and dry seasons".SCIENCE OF THE TOTAL ENVIRONMENT 877(2023):9.

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来源：地理科学与资源研究所

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