Study on Water Resources Carrying Capacity in Eight Provinces of Northern China

Based on the relevant data of nature,society,economics and water resources of eight provinces of northern China from 2009,six main evaluation factors were selected including use efficiency of water resources,water deficient ratio,irrigation ration of arable land,amount of precipitation,per capita water resources and ecological water use rate,and quantitatively researched water resources carrying capacity of eight provinces of northern China by using the fuzzy comprehensive evaluation method.The results show that the comprehensive grade of the study area was greater than 0.570,and the current water exploitation and use have reached a considerable scale,and there still has a water carrying capacity.For the eight sub-areas,the water resources carrying capacity status is very different;Beijing,Tianjin and Hebei province have a low water resources carrying capacity,while water resources carrying capacity of other regions are relatively strong.Finally,according to different regions of the water resources carrying condition,the corresponding measures were puts forward.