Assessment of Sustainable Utilization of Water Resources in Hechi City Based on Ecological Footprint Model

The water resources ecological footprint model was used to calculate and analyze water resources ecological footprint,water resources ecological carrying capacity,water resources ecological profit and loss,water resources ecological pressure index,and water resources ecological footprint per 104 yuan GDP of Hechi City from 2004 to 2010,all of which can help characterize the sustainable utilization situation of water resources in this area.The results showed that:(1) in Hechi city,the water resource ecological footprint per capita was 0.7420 hm2,the water resource ecological capacity per capita was 7.4286 hm2,the water resources ecological profit per capita was 6.6867 hm2,the average value of water resources ecological pressure index was 0.1077,which indicated that the water resources utilization in the area was sustainable and the water resources safety degree was high in recent years;and(2) the average decreasing rate of annual water resources ecological footprint per 104 Yuan GDP was 7.8%,which suggested that the water resources utilization efficiency improved significantly in recent years in Hechi City.Finally this paper pointed out that the water resources ecological footprint research can be benefited from the aspects of water resources equivalence factor value and the calculation of water pollution footprint.