西北地区生态需水的量化与分析

我国西北地区在社会经济发展过程中，水资源的不合理配置引发了一系列生态环境问题，研究西北地区生态需水对保护当地的生态环境系统有着重要意义。从生态需水的概念出发，将生态需水量化过程划分为河道内和河道外两部分，并介绍了相应的计算方法和公式。在对西北地区进行生态分区的基础上,运用上述方法，计算出西北地区的生态需水量，其结果对西北地区水资源可持续利用有一定参考价值。

Quantification and Analysis of Ecological Water Demand in Northwest Region

With the development process of society and economy in northwest region in China, the unreasonable allocation of water resources causes a series of ecological and environmental problems and the researches on ecological water demand have important significances to protect the local ecological environment system. From the concept of ecological water demand,the quantification process of the demand is divided into two parts, i.e. a part out of the river channel and a part in river channel, for which the corresponding calculation methods and formulae are put forward. Based on the ecological division made for northwest region, the ecological water demand quantity of the northwest region is figured out with the methods given above, of which the results have certain reference value to the sustainable utilization of the local water resources.