Eco-Environmental Water Demand of Woodland in Reception Basin of Urban and Rural Drinking Water Source Engineering of Guyuan,Ningxia Province
Based on studies of ecological water demand of rainfall attrition woodland and artificial forest land in urban and rural water engineering reception basin of Guyuan,basis for ecological restoration and reasonable utilization of water resources was provided.Firstly using Thornthwaite model and Penman-Montieth model to calculate the eco-environmental water requirement quota,and the two kinds of model calculation results were compared.Results showed that Penman-Montieth model was more rational because it integrated all sorts of meteorological factors and the geographical position factors.Through the rainfall resource equilibrium analysis,results showed that minimum and suitable ecological water demand could not be satisfied for precipitation attrition woodland relied on natural precipitation in Haiyuan county located in the central arid zone and Xiji county in the southern part of the mountain area.All kinds of forest land minimum ecological water demand can be satisfied and appropriate ecological environmental water demand was not being met Pengyang and Yuanzhou county located in the southern mountainous area.Runoff attrition artificial forest land water demand relying on rainfall can not be satisfied.Artificial water distribution was needed in all counties.
reception basinforest landecological and environmental water requirement
NETL
NSTL
万方数据
维普
