山西水资源衰减的质疑

Discussion on Water Resources Decline in Shanxi Province

从水资源的定义、数量确定、评价方法等方面分析，说明水资源衰减的说法不能成立。水资源始终维持动态平衡，当样本系列长度不一样时，均值将发生变化。现实中径流量减少的问题，应从降水和人类活动影响因素等成因作客观、具体的分析，而不能简单地判断为水资源衰减。

The paper analyses the definition, the quantity and the evaluating methods of the water resources, and points out that the view of water resources decline is untenable. The water resources keep constantly the dynamic equilibrium. When the series length in the sample is not same, the average value should be differeent too. Actually, the problem for runoff decline should be analyzed from the aspects of rainfall and human actions, and not simply decided.