西北生态脆弱地区甘肃的生态安全时空演化格局  

Spatial and temporal evolution of ecological security in northwest ecologically fragile areas in Gansu province

作　　者：胡晓芬[1] 陈兴鹏[1] 逯承鹏[2,3,1] 庞家幸 张子龙[1] 赵林[4] 薛冰 HU Xiaofen;CHEN Xingpeng;LU Chengpeng;PANG Jiaxing;ZHANG Zilong;ZHAO Lin;XUE Bing(College of Earth and Environmental Sciences/Institute for Circular Economy in Western China, Lanzhou University, Lanzhou 730000, China;Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Key Lab for Environment Computation and Sustainability of Liaoning Province, Shenyang, 10016, China;Dashiqiao Senior High School of Liaoning, Yinkou 115100, China)

机构地区：[1]兰州大学资源环境学院/兰州大学中国西部循环经济研究中心,兰州730000 [2]中国科学院沈阳应用生态研究所污染生态与环境工程重点实验室,沈阳110016 [3]辽宁省环境计算与可持续发展重点实验室,沈阳110016 [4]辽宁省大石桥市高级中学,营口115100

出　　处：《生态科学》2017年第6期165-172,共8页Ecological Science

基　　金：国家自然科学基金(41701142;41471462;41471116);中国科学院青年创新促进会(2016181);辽宁省自然科学基金(201602743;20170540898)

摘　　要：基于区域能值密度改进的能值-生态足迹模型,结合GIS以甘肃省为例分析了西北生态脆弱地区生态安全时空演化格局。结果表明:甘肃省的人均生态赤字呈现波动上升趋势,人均生态赤字从1980年的0.42 hm^2·cap^(-1)增加到2015年的4.00 hm^2·cap^(-1),且以年均6.70%的速度增长,生态赤字状态在空间上呈现出由中心向两极扩散的演变格局。生态压力指数不断增大,生态安全等级逐渐升高,近年来生态安全状况出现恶化趋势,生态安全问题亟待解决。基于上述结论从降低人类环境负荷和减少化石能源使用量等方面提出了提升生态安全状况的对策措施。Based on the improved emergy-ecological footprint model by regional energy density the paper analyzed the spatial and temporal evolution of ecological security in northwest ecologically fragile areas by taking Gansu province as an example using the GIS.The results show that the per capita ecological deficit appeared a rising trend in Gansu province,with the average annual growth rate of6.70%,and it increased from0.42hm2·cap-1in1980to4.00hm2·cap-1in2015,which showed the evolution pattern from the middle to the two poles in space.The ecological tension index increased gradually,and the ecological security levels kept raising.The ecological security situation became worse,so the ecological security issues needed to be solved.Finally,some countermeasures to improve the ecological security were put forward from the aspects of reducing human environmental load and reducing the use of fossil energy.

关 键 词：生态安全 时空格局 能值-生态足迹模型 甘肃省 

分 类 号：Q948.1[生物学—植物学] X835[环境科学与工程—环境工程]