Abstract
Thinking of Wetland Reconstruction and Ecological Remediation for Shallow Lakes
Highlights
Zhang Yimin*, Gao Yue-xiang, Cao Jing-ying, Wang Long-mian, Yang Fei and Zhang Yongchu Nanjing Institute of Environmental Science, MEP, Nanjing 210042, China
A case study was conducted of the Gehu Lake which is a complicated and typical lake that linked to river in the headwater area of Taihu Lake Basin
In the Taihu Lake Basin, river system is well-developed and shallow lakes are dotted extensively, with area of over 1300 km2.The area of 189 lakes is over 0.5 km2, and that of 6 lakes is over 40 km2
Summary
Due to the lakes characteristics of low-polluting water treatment capacity and favorable ecological environment for implementing all kinds of ecological remediation technology, the overall idea with ecological treatment for in-flow and out-flow rivers estuary, ecological remediation along the lakeside, restoration and stability of aquatic ecosystems as the main direction on the wetland reconstruction and ecological remediation in Taihu lake basin was put forward. The focus of program includes the follows strategies: purification of low pollution water at in-flow river estuary, ecological interception of pollutants at out-flow river estuary, plant restoration and wetland reconstruction at shallow area, regulating the lake ecosystem to maintain stability It will provide technical supports and scientific basis for ecological remediation and repair reconstruct of shallow lake in a wide range of areas. The way is “in-flow and out-flow rivers estuary, ecological remediation along the lakeside, restoration and stability of aquatic ecosystems” to carry out shallow wetland reconstruction and ecological remediation, according to the principle of “Classification, Zoning, Grading, Staging” (Figure 1)
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