水资源足迹计算模型研究——以南京市为例

在生态足迹理论的基础上探讨了水资源足迹的概念。基于水资源生产力，推导出水资源足迹和水资源承载力的计算公式，用水资源赤字和水资源盈余来衡量水资源利用的可持续性。以南京市为例进行模型实证研究，计算了2003～2007年南京市水资源足迹和水资源承载力，结果表明南京市水资源足迹增长明显，水资源承载力总体平稳，赤字从2004—2007年呈指数增长趋势。实证研究表明模型结果可以在一定程度上衡量生产消费对水资源的影响。

Study on Calculation Model of Water Resource Footprint——A Case of Nanjing City

In this paper, on the basis of the theory of ecological footprint, the concept of water resource footprint was discussed. Meanwhile, based on the productivity of water resource, the formula for the calculation of water resource footprint （WRF） and water resource supply （WRS） was derived. The sustainability of water resource utilization was measured by deficit and surplus of water resource. Then Nanjing City was taken for an empirical study, in which WRF and WRS of Nanjing from 2003 to 2007 were calculated. The results showed that the water resource footprint increased evidently, water resource supply kept stable generally and the water resource deficit increased exponentially from 2004 to 2007. The study showed that the model indicated the impact of water production and consumption on water resource in a way.