Assessment Research on Water Resources Carrying Capacity of Kaifeng City Based on Binary-pattern and Multip le-weight Way

In view of the regional water resources carrying capacity comprehensive assessment，this paper identifies that the natural factors，artificial factors and water resources factors are the water resources carrying capacity influencing factors by using“natural-artificial”binary pattern.On this basis，it constructs a multi-level and semi-structure assessment indicator system，and sets up an improved multi-level fuzzy assessment model based on multiple weights，and then uses this model in water resources carrying capacity comprehensive assessment of Kaifeng city.The assessment result shows that in 2004-2013，the water resources carrying capacity appears the optimal state in 2007.