摘要
为弥补水足迹单纯考虑经济发展对水资源占用的缺陷,结合＂水生态足迹＂与＂脱复钩＂理论,从水资源（用水量）和水环境（污染物排放量）的综合视角,评价贵阳市2002—2014年水生态足迹与经济发展的脱钩水平。研究表明：2002—2014年贵阳市水生态足迹与经济发展除2011年扩张性水环境负脱钩外,其余年份为水资源和水环境强（弱）脱钩,且历年脱钩指数时间序列上波动明显,其平均值为0.138;贵阳市单位GDP水生态足迹由2002年的3.588 hm2/万元下降至2014年的0.637 hm2/万元,年均下降率达12.9%;由于贵阳市GDP增速稳定于13%~17.1%之间,故水资源与经济发展的脱钩程度取决于水资源和水环境生态足迹的变化特征;上述研究表明,水生态足迹的角度衡量水资源与经济发展的脱钩态势具有科学、全面、客观的特点。
To make up for the defect that water footprint only considers water resource consumption by economic development,combining water ecological footprint and decoupling theories,from the comprehensive perspective of water resources（ water consumption） and water environment（ pollutants emission）,we evaluated the decoupling situation of water ecological footprint and economic development in Guiyang from 2002 to 2014. The results showed that,from 2002 to 2014,the decoupling situation of water ecological footprint and economic development were strong（ weak） decoupling of water resources and water environment,except for the expansive water environment negative decoupling in 2011,and over the years the decoupling indexes fluctuated significantly,with an average value of0. 138. Since the GDP growth rate was relatively stable between 13 % ~ 17. 1 % in Guiyang,the decoupling degree of water resources and economic development depended on the structure characteristics of water resources and water environment ecological footprint. The study proved that,measuring the decoupling trend of water resources and economic development from the perspective of water ecological footprint is scientific,comprehensive and objective.
出处
《贵州科学》
2016年第5期32-38,共7页
Guizhou Science
基金
国家科技支撑计划项目"喀斯特地区‘三水’资源转变演化规律研究与监测技术示范"(2014BAB03B01)
关键词
城市
水生态足迹
脱钩指数
水资源
city
water ecological footprint
decoupling index
water resource
