摘要
利用生态足迹模型对定西市陇西县2015年的生态足迹进行计算和分析,按照Ulanowicz公式计算陇西县2010—2015年的生态足迹多样性指数,并对其发展能力进行分析。结果表明:2015年陇西县的人均生态足迹为0.938 296 hm^2/人,可利用的人均生态承载力为0.669 769 hm^2/人,生态赤字为0.268 527 hm^2/人,处于区域不可持续发展的状态;陇西县的多样性指数和发展能力变化趋势基本一致,多样性指数的不断增大是发展能力增强的主要因素;陇西县的产业结构单一,耕地和草地在总生态足迹的占比超过90%,且近两年的万元GDP生态足迹有增加趋势,即对资源的利用效率有所降低,陇西县需要调整产业结构来增加生态足迹多样性,同时应提高生态资源的利用效率来提高生态经济系统的发展能力。
Using ecological footprint model to calculation and analysis on the ecological footprint in 2015 of Longxi county,and in accordance with the Ulanowicz formula for Longxi county in 2010—2015 of ecological footprint diversity index and development capacity calculation and analysis,the results show that the Longxi county in 2015 the per capita ecological footprint is 0.938296 hm 2/person,can use the per capita ecological carrying capacity of 0.669769 hm 2/person,ecological deficit is 0.268527 hm 2/person,is in a state of regional sustainable development.The variation trend of ecological footprint diversity index in Longxi county is basically consistent with that of the development ability of the ecological economic system.The increase of ecological footprint diversity index is the main factor of the improvement of the development ability of the ecological economic system.Longxi county has a single industrial structure,with cultivated land and grassland accounting for more than 90%of the total ecological footprint.The industrial structure of Longxi county is single,and ecological footprint per ten thousand yuan of GDP in nearly two years has an increasing trend,which means the utilization efficiency of resources has been reduced.Longxi county needs to adjust the industrial structure to increase the diversity of ecological footprint,and at the same time improve the utilization efficiency of ecological resources to improve the development capacity of the ecological economic system.
作者
刘燕
何有华
孙浩峰
周建海
LIU Yan;HE You-hua;SUN Hao-feng;ZHOU Jian-hai(Gansu Science Institute of Soil and Water Conservation,Lanzhou 730020,China)
出处
《环境生态学》
2020年第9期61-65,共5页
Environmental Ecology
基金
甘肃省水利科研技术推广项目(甘水科外发〔2017〕76号)
甘肃省水利厅水资源费项目(甘水资源发〔2018〕225号)
甘肃省水利科研技术推广项目(甘水科外发〔2018〕70号)资助。
关键词
生态足迹
发展能力
陇西县
ecological footprint
capacity for development
Longxi county
