青海共和盆地生态需水研究与计算

 针对水资源合理配置研究中生态需水所处的位置与研究意义,在总结前人研究成果的基础上,以青海共和盆地为例,对生态需水进行初步计算,得出:共和盆地河道外生态需水量为0.053亿m3,主要为人工林地所用,河道内生态需水量为3.523亿m3,共和盆地生态需水量共计3.576亿m3,占共和盆地总水资源量的54.79%。因此,生态需水在区域水资源可利用量中占有较大比重,应将其作为重要部分纳入研究区水资源配置中,对水资源进行重新分配;同时,研究区的生态环境建设措施应以恢复退化草场和改造乔木纯林为乔灌结合林为主。

Ecological water demand of Gonghe Basin in Qinghai Province

Aimed at research meaning of the ecological water demand an example of Gonghe basin in Qinghai Province was presented and a further discussion to the calculation method of ecological water demand was made. The ecological water use has been carried on initial calculation, and the result showed the quantity of ecologicalwater demands outside riverways is 5.3 million m^3. The main part of which is used by artificial woodland, river system ecological water demand is of 352.3 million m^3. Both of them are 357.6 million m^3, accountsfor 54.79 % of the total water resources amount. With the result the ecological water demand has a specific gravity in available water resource. As an important part it should be brought into the research of the allocation of water resource so as to provide the basis for sustainable development of studied area where the ec-environment constantly worsens. At last the proposal was put forward that eco-environment construction of researcharea should primarily restore the degenerated pasture and change the pure arbor forest as to mixed forest with shrubs.