Land consolidation is a project of comprehensive planning for farmland leveling, water resources allocation, traffic network building, and protection forest constructing in order to increase the farmland area and to enhance the farmland quality, and therefore to improve product conditions and eco-environment. The effects of consolidation on agricultural water environment are represented as follows: (1) quantity and acquirability of water irrigation; (2) utilization efficiency of irrigation water; (3) the structure of surface hydrology an...