Study on difference of blue-green water in Huangshui basin and green water under different types of land use based on SWAT model
The spatial and temporal distribution of blue-green water is directly related to a region's water resources and food security.This paper analyzed the law of time variation of blue-green water and distribution pattern of green water in different types of land use based on SWAT model during the period 1981-2000.The study showed that in huangshui basin the blue-green water is from precipitation.Compared to the blue water,The amount of green water is about 3.8 times as large as that of green water.The differentiation of average annual green water flow is obvious in different types of land use,agriculture land is the largest,used land of residents is the minimum.The storage volume of Green water is relative rich in wetland and low coverage pasture.Taking 1981 to 1985 and 1996 to 2000 respectively as the former and the latter period,the paper got that the green water resources of land used by agriculture,the amount of change of green water storage was closed related to crop growth cycle and management condition.
国家科技期刊平台
NSTL
万方数据
维普
