CUI Bao-shan1, LIU Xing-tu2
(1. Institute of Environmental Sciences, Beijing Normal University, Beijing 100875, China;
2. Changchun Institute of Geography, CAS, Changchun 130021, China)
Abstract: With over half-century reclamation, great changes have taken place in ecological features of wetlands in Naolihe Drainage Basin. The paper analyses the main changes,including change in wetlands, change in water condition and water quality, all related to non-sustainable exploitation of wetlands. Reclaiming and destorying wetland resources has led to a series of ecological problems, such as serious soil erosion, increase in local desertification area and water erosion, only the emphasis on use without measures of protection, the divorce between reclamation and construction, resultins in decline of soil fertilities to different degrees and the intensification of environmental pollution as well as biodiversity decreasing. Naolihe Drainage Basin is an important part of Sanjiang Plain, wetland changes will seriously affect the sustainable development of Sanjiang Plain. So, as the new policy comes with the advent of the new century, Naolihe Drainage Basin will get the best period of regulation.
Keywords: wetlands; ecological character; Naolihe Drainage Basin; Sanjiang Plain
|