改良生态足迹法在珠海的应用

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

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 5hm2/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 3hm2/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.

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 ecofootprint method to calculate and analyze the eco-footprint of Zhuhai in 2002, the result is that the ecoootprint 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 hm2 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.