改良生态足迹法在珠海的应用

改良生态足迹法从环境、水资源两方面入手，对传统生态足迹法进行了改进.在地理信息系统的支持下，利用改良生态足迹法对珠海2002年的生态足迹需求、供给和生态赢余进行了计算和分析，评估了珠海的可持续发展状况.结果表明:2002年珠海的生态足迹需求为3.492　8 hm2/人，供给为3.908　7 hm2/人，生态赢余为0.415　9 hm2/人，珠海的发展属于可持续性；其中水资源的生态足迹供给为0.635　8 hm2/人，需求为0.013　7 hm2/人，生态赢余为0.622　1 hm2/人；环境容量的生态足迹供给为3.489　5 hm2/人，需求为1.526　8 hm2/人，生态赢余为1.962　7 hm2/人.使用传统生态足迹法的计算结果却为:生态足迹需求为1.952　3 hm2/人，供给为0.316　4 hm2/人，生态赤字为1.635　9 hm2/人，珠海的发展属于不可持续性.而改良生态足迹法的计算结果更符合珠海的实际，对于其他城市的生态规划和建设也具有借鉴和参考价值. 

Study on the Application in Zhuhai with the Improved Eco-Footprint Method

Based on the environment and water resources,the traditional eco-footprint method was improved.Using the improved eco-footprint method to calculate and analyze the eco-footprint of Zhuhai City,Guangdong,in 2002,the sustainability of Zhuhai was assessed under the support of geographical information system.The eco-footprint demand of Zhuhai is(3.492 8) hm~2 per capita,the supply is (3.908 7) hm~2 per capita and the ecological surplus is(0.415 9) hm~2 per capita.Statistics on the Zhuhai's eco-footprint and eco-capacity in 2002 shows that development of the city falls into the category of "sustainable".The eco-footprint demand of water resource is(0.013 7) hm~2 per capita,the supply is(0.635 8) hm~2 per capita and the ecological surplus is(0.622 1) hm~2 per capita.The eco-footprint demand of environment capacity is(1.526 8) hm~2 per capita,the supply is(3.489 5) hm~2 per capita and the ecological surplus is(1.962 7) hm~2 per capita.Using the traditional eco-footprint method to calculate and analyze the eco-footprint of Zhuhai in 2002,the result is that the eco-footprint demand of Zhuhai is(1.952 3) hm~2 per capita,the supply is(0.316 4) hm~2 per capita and the ecological deficit is (1.635 9) hm~2 per capita.The development of the city falls into the category of "unsustainable".The result with the improved eco-footprint method is similar to the reality and may provide references for ecological planning of other cities.