Defining the range of ecological shelter zones in the shore zone of Three Gorges Reservoir, China

被引:2
作者
Feng, Jie [1 ]
Hu, Youbing [2 ]
Li, Zhijia [2 ]
Yang, Tao [3 ]
Shi, Pengfei [3 ]
机构
[1] China Inst Water Resources & Hydropower Res, Water Resources Res Inst, Beijing 100044, Peoples R China
[2] Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Jiangsu, Peoples R China
[3] Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Three Gorges Reservoir; Ecological shelter zones; Hydrological environment model; Grid-Xin'anjiang model; Raster reverse tracking method; NONPOINT-SOURCE POLLUTION; WATER; PROJECT; IMPACTS;
D O I
10.1007/s00477-014-0882-7
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
To maintaining a health ecological environment in Three Gorges Reservoir (TGR) area, ecological shelter zones (ESZ) need to be built in the TGR shore zone urgently. Based on the implication and function of ESZ, this study first analyzed the relationships amongst three subsystems of the TGR area, including the upstream production-living land, the downstream reservoir water body, and the ESZ. Then a simple and practical hydrological environment model for controlling the eutrophication of the TGR water body was constructed to determine ESZ range of TGR. Additionally, based on the pollutant degradation efficiency of ESZ and the assimilative capacity of reservoir water body, a raster reverse tracking method was proposed to determine the range of ESZ. Thirdly, take Yangdu town in Zhongxian county as a typical region, the ESZ range under three scenarios of different rainfall intensity, degradation efficiency and inflow water quality that corresponding to the three decisive factors of defining ESZ range were discussed. Finally, the statistical laws of the ESZ's width at each boundary points were discussed to facilitate the ESZ construction projects, and selected standardized rate at 70, 90, and 99 % were labelled as "General", "Good" and "Excellent" level to represent the performance of the width of the ESZ range. In conclusion, it suggest "Good" level width as basic width of ESZ, and additionally a special protection zone should be put on upstream environment for the extreme large width at the boundary points.
引用
收藏
页码:1973 / 1984
页数:12
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