甘肃省生态承载力空间定量评价及耦合协调性

发布时间：2018-03-26 08:04

本文选题：生态承载力　切入点：状态空间法　出处：《生态学报》2017年17期

【摘要】：以生态环境脆弱的甘肃省为研究区,选用状态空间法从生态功能弹性力、资源环境供容力以及社会经济协调力3个维度构建生态承载力评价指标体系,对甘肃省2010年生态承载力的空间分异特征、空间关联特征以及耦合协调性进行分析。结果表明:(1)空间分布上,甘肃省生态承载力总体呈现东南高西北低,从东南高承载区向西北弱承载区逐级递减的空间分布格局;相近或相异生态地理分区的生态承载力表现出空间和数量上的一致性和差异性;特别地,河西走廊独特的绿洲生态景观,促使该地区生态承载力存在明显的空间异质性。(2)空间关联上,甘肃省生态承载力的分布呈正的全局空间自相关,存在显著的高值(或低值)集聚区;局部空间自相关LISA集聚类型主要包括HH和LL 2种类型,前者分布于甘南高原、陇南山地及河西走廊以南的祁连山区,后者则分布于苏干湖水系以北的酒泉境内与石羊河流域下游的武威民勤地区。(3)耦合协调性上,甘肃省生态承载力综合耦合协调性空间差异较大,从东南到西北呈现高-低协调相间分布的格局;较高协调地区出现在甘肃省东南部与河西走廊中东段,而较低协调地区则位于兰州-白银经济区及河西走廊西段;维度间耦合协调性受制于本地区自然和人文环境状况,使其空间分布与协调程度表现得不尽相同。
[Abstract]:Taking Gansu Province with fragile ecological environment as the research area, the evaluation index system of ecological carrying capacity was constructed from three dimensions of ecological function elasticity, resources and environment supply capacity, and social and economic coordination ability by using state space method. The characteristics of spatial differentiation, spatial correlation and coupling coordination of ecological carrying capacity in Gansu Province in 2010 are analyzed. The results show that the ecological carrying capacity of Gansu Province is generally high, northwest and low in Southeast China. The spatial distribution pattern of decreasing gradually from the high bearing area in the southeast to the weak bearing area in the northwest; the ecological carrying capacity of the similar or different ecogeographic zones shows the consistency and difference in space and quantity; in particular, The unique oasis ecological landscape in Hexi Corridor promotes the obvious spatial heterogeneity of ecological carrying capacity in this area. The distribution of ecological carrying capacity in Gansu Province is positively global spatial autocorrelation. There are significant high value (or low value) agglomeration areas, local spatial autocorrelation LISA agglomeration types mainly include HH and LL, the former is distributed in Gannan Plateau, Longnan Mountains and Qilian Mountains south of Hexi Corridor, the former is located in Gannan Plateau, Longnan Mountains and Qilian Mountains south of Hexi Corridor. The latter is distributed in the coupling and coordination between Jiuquan, north of Sugan Lake system, and Wuwei Minqin area in the lower reaches of Shiyang River Basin, and the spatial difference of comprehensive coupling and coordination of ecological carrying capacity in Gansu Province is great. From southeast to northwest, there is a pattern of high and low coordination, the higher coordination area appears in the southeast of Gansu Province and the eastern part of the Hexi Corridor, while the lower coordinated area is located in the Lanzhou Baiyin Economic Zone and the western section of the Hexi Corridor. The coupling and coordination between dimensions is restricted by the natural and human environment in this area, which makes their spatial distribution and coordination degree different.
【作者单位】：西北师范大学地理与环境科学学院;鲁东大学资源与环境工程学院;中国科学院地理科学与资源研究所;
【基金】：国家自然科学基金(40771054) 高等学校博士学科点专项科研基金联合资助课题(20106203110002)
【分类号】：F127;X826

【相似文献】