Yang Hai-Bo, Wang Zong-Min, Zhao Hong-Ling, Li Ji-Ren
Henan Provincial Key Laboratory on Information Network, Zhengzhou University, Zhengzhou 450001, China.
Ying Yong Sheng Tai Xue Bao. 2009 Jul;20(7):1753-8.
Taking the spatiotemporal heterogeneity of water-heat condition into consideration, the traditional ecological footprint (EF) model was modified with net primary productivity (NPP). In the meanwhile, water resource EF was calculated to complement the deficiency of water EF account which only included water's fishing function. The EF dynamics of Dongying City from 1996 to 2003 was analyzed by using the modified model. Based on traditional model, the EF of Dongying City in 1996-2003 increased from 1.766 hm2 to 2.644 hm2, and the ecological capacity (EC) decreased from 0.889 hm2 to 0.813 hm2; while based on the modified model, the EF increased from 2.819 hm2 to 3.776 hm2, and the EC decreased from 1.935 hm2 to 1.865 hm2. Comparing with that from traditional model, the ecological pressure calculated by the modified model was lesser, which suggested that to increase the utilization of water resource would alleviate the ecological pressure on the region. The modified EF model was more precise to reflect the natural resource utilization of Dongying City.
考虑到水热条件的时空异质性，利用净初级生产力（NPP）对传统生态足迹（EF）模型进行了修正。同时，计算了水资源生态足迹，以弥补仅包含水资源渔业功能的水生态足迹账户的不足。利用修正后的模型分析了1996—2003年东营市的生态足迹动态。基于传统模型，1996—2003年东营市生态足迹从1.766 hm²增加到2.644 hm²，生态承载力（EC）从0.889 hm²下降到0.813 hm²；而基于修正后的模型，生态足迹从2.819 hm²增加到3.776 hm²，生态承载力从1.935 hm²下降到1.865 hm²。与传统模型相比，修正后的模型计算出的生态压力较小，这表明提高水资源利用效率将缓解该地区的生态压力。修正后的生态足迹模型能更精确地反映东营市的自然资源利用情况。
