Abstract: 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 calcula ted 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 analy zed by using the modified model. Based on traditional model, the EF of Dongying City in 1996〖KG-*2〗-〖KG-*7〗2003 increased from 1766 hm2 to 2644 hm2, and the ecological capacity (EC) decreased from 0889 hm2 to 0813 hm2; w hile based on the modified model, the EF increased from 2819 hm2 to 3776 h m2, and the EC decreased from 1935 hm2 to 1865 hm2. Comparing with tha t from traditional model, the ecological pressure calculated by the modified mod el was lesser, which suggested that to increase the utilization of water resourc e would alleviate the ecological pressure on the region. The modified EF model w as more precise to reflect the natural resource utilization of Dongying City.

Key words: heat resource, vertical decreasing rate, three-dimensional climate, mountainous region, Nanling Mountains.