Effect of the Water Transfer Project from Yangtze River to Hangjiang River on the Eco-environment of the Middle and Lower Reaches of Hanjiang River

The transfer project from Yangtze River to Hanjiang River which is a tie in project of the South-to-North Water Transfer,will make a great effect on the improvement of the eco-environment of the middle and lower reaches of Hanjiang River.Based on the quality model and the RQEM,the effect of the transfer project from Yangtze River to Hanjiang River on ecosystem environment of the middle and lower reaches of Hanjiang River is analyzed from the aspects of level,flow,growth of fish,algae,etc.The results show that the middle and lower reaches of Hanjiang River's level and the capacity enhance in a certain degree,the concentration of the pollutant(COD) reduces,the water bloom phenomenon is controlled in a certain degree,fishes' survival space has been improved,however there also exists the spread of schistosomiasis potential risks after the transfer project from Yangtze River to Hanjiang River.