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Water Environment Variation in the Three Gorges Tributary and Its Influencing Factors on Different Scales
Hu, Sheng1,2,3; Xia, Jun1,4; Wu, Xia1; Wang, Yingcai3; Xia, Fan3
2018-12-01
Source PublicationWATER
ISSN2073-4441
Volume10Issue:12Pages:18
Corresponding AuthorHu, Sheng(hus.14b@igsnrr.ac.cn) ; Xia, Jun(xiaj@igsnrr.ac.cn)
AbstractLong River is a small tributary typical of the Three Gorges Reservoir. In order to clarify the influence of hydro-meteorological factors and human regulation of the reservoir water level on the water environment, we monitored water environment parameters at six sites along Long River for three years, and were able to assess the degree to which variation in the water environment was affected from the micro-scale to macro-scale processes. We found that the water environment parameters have obvious seasonal variation and spatial distribution patterns. From upstream to the estuary, the influence of the backwater was gradually enhanced, whereas the influence of inflow gradually weakened. The distance coefficient between the samples in the backwater area and control sites in the upstream and the Yangtze River had a significant longitudinal gradient pattern (ANOVA, p < 0.05). Through redundancy analysis (RDA) forward selection, we found that cumulative precipitation, water level, cumulative net radiation, daily average temperature, daily net radiation, and daily precipitation all had significant influences on the water environment of the Long River (global permutation test, p < 0.05). The perennial backwater area was mostly affected by water level fluctuations (explaining 39.9% of data variation), whereas the fluctuation backwater area and the upstream inflow area were most affected by cumulative precipitation (explaining 42.9% and 44.0% of data variation, respectively). On the macroscale, the contribution rate of monthly change to the variation of water environment variables reached 54.9%, and the contribution rate of geographical change to the variation of water environment variables was only 7.2%, indicating that the water environment of Long River was mainly affected by exogenous input factors driven by the monsoon climate. Furthermore, we showed that the spatial interpolation method combined with the distance coefficient can easily and efficiently describe the complicated dynamic influences of the upstream inflow and the Yangtze River backwater on the water environment in the Long River bay. The conclusions are helpful in explaining the driving mechanisms of the water environment in the tributaries of the Three Gorges Reservoir, which can provide reference for water environmental protection and management in the Three Gorges Reservoir.
KeywordThree Gorges Reservoir water environment hydrometeorology different scale water level regulating temporal and spatial variation
DOI10.3390/w10121831
WOS KeywordXIANGXI BAY ; 3-GORGES RESERVOIR ; SPATIAL-ANALYSIS ; YANGTZE-RIVER ; DANING RIVER ; CHINA ; QUALITY ; MAINSTREAM ; SIMULATION ; ECOSYSTEM
Indexed BySCI
Language英语
Funding ProjectNational Grand Science and Technology Special Project of Water Pollution Control and Improvement[2017ZX07108-001] ; National key Research and Development Plan[2016YFC0402207-3]
Funding OrganizationNational Grand Science and Technology Special Project of Water Pollution Control and Improvement ; National key Research and Development Plan
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000455314300126
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/50634
Collection中国科学院地理科学与资源研究所
Corresponding AuthorHu, Sheng; Xia, Jun
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Yangtze Valley Water Environm Monitoring Ctr, 13 Yongqing Branch Rd, Wuhan 430010, Hubei, Peoples R China
4.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn, 8 Donghu South Rd, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Hu, Sheng,Xia, Jun,Wu, Xia,et al. Water Environment Variation in the Three Gorges Tributary and Its Influencing Factors on Different Scales[J]. WATER,2018,10(12):18.
APA Hu, Sheng,Xia, Jun,Wu, Xia,Wang, Yingcai,&Xia, Fan.(2018).Water Environment Variation in the Three Gorges Tributary and Its Influencing Factors on Different Scales.WATER,10(12),18.
MLA Hu, Sheng,et al."Water Environment Variation in the Three Gorges Tributary and Its Influencing Factors on Different Scales".WATER 10.12(2018):18.
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