Evaluation on Ecological Engineering Construction of MaNaSi River Valley Wetland

摘要

MaNaSi River wetland lies between diluvial fan and alluvial plain of MaNaSi River system (spring water overflo region). It consists of many large or small Lakes, reed fields, waterlogged lowlands, fountains and gullies .The wetland is 70 kilometers long from east to west, 3～5kilometers wide from south to north, and about 300km ~2 squares. It is a typical inland river nature wetland in arid areas. The enough and reasonably use the MaNaSi River wetland(spring water overflow region) this advantage hydrology geology, and as the Lake , marsh land reservoir site, and set up man plain reservoir and form reservoir cluster with wetland merge into an integral whole, which up to the river and down to irrigation area , it change only headwaters ( spring) weake static of function into numerous headwaters ( spring, river water, well water) synthesize function beneficial ecosystem protect dynamic wetland, and chang MaNaSi River valley wetland into the headwaters that have tallest the rate of guarantee supply water system. This success of wetland ecosystem engineering development provide a good model for ecosystem engineering developments and water resources safety, keep on making use of inland river wetland in the river of arid areas.