基于GIS格网模型的长江上游山丘区国土利用生态健康评价--以四川省宜宾市为例  

Ecological Health Assessment of Land Use in the Upper Reaches of the Yangtze River Based on GISGrid Model:Take Yibin in Sichuan Province as an Example

作　　者：李政 何伟[1,2] 杨皎 赵晓全 陈林 LI Zheng;HE Wei;YANG Jiao;ZHAO Xiaoquan;CHEN Lin(Key Laboratory of Southwest Land Resources Evaluation and Monitoring of Ministry of Education of China,Sichuan Normal University,Chengdu 610066,Sichuan;Geography and Resources Science College,Sichuan Normal University,Chengdu 610066,Sichuan;Geographic Information and Remote Sensing Application Center,Chongqing 401121)

机构地区：[1]四川师范大学西南国土资源评价与监测教育部重点实验室,四川成都610066 [2]四川师范大学地理与资源科学学院,四川成都610066 [3]重庆市地理信息和遥感应用中心,重庆401121

出　　处：《四川师范大学学报（自然科学版）》2020年第3期417-426,共10页Journal of Sichuan Normal University（Natural Science）

基　　金：四川省哲学社会科学规划项目(SC16B066)。

摘　　要：为测度研究区国土利用生态健康水平粒度特性与空间分异规律,论文基于"活力-组织-弹性-功能"理论与PSR模型,以公里格网为评价单元,采用熵权综合评价法计算健康值,利用空间探索性法揭示其空间分异规律,并通过因子探测器直观展现各因素决定力大小.结果表明:1)宜宾市各区县国土利用生态综合健康平均指数围绕0.60上下波动,区域发展相对均衡,但中心城区与郊区县差异较大.2)国土利用生态健康状况总体较好;健康区域面积最大,达到6 131 km^2,占区域总面积的46.07%;亚健康区域面积次之,占比29.78%;不健康区域面积最小,占比24.15%.3)国土利用生态系统健康水平具有较强的空间相关性,空间集聚格局显著,具有空间相关性的以正相关为主,主要是HH型或LL型集聚区.4)人类活动差异是影响全市国土利用生态健康水平空间分异的主要因素,自然系统恢复力差异是次要因素,土壤属性、地形地貌与政策调控等是导致生态系统健康水平空间分异的其他因素.因此,收紧容量上线,兜住生态底线,坚持国土集约利用,优化"三生"空间布局,调整产业结构,发展生态旅游将成为宜宾市提升国土利用生态健康水平,打造生态山水文化名城的必要措施.In order to measure the grain size characteristics and spatial differentiation of the ecological health level of the land use in the study area,the paper is based on the"vigor-organization-elastic-function"theory and the PSR model. Taken the kilometer grid as the evaluation unit,the health value is calculated by the entropy weight comprehensive evaluation method,its spatial differential law is revealed by the ESDA method and the determinant factors are visually shown by the factor detector. The results show that: 1) The average comprehensive ecological index of land use in all districts and counties of Yibin City fluctuates around 0.60,and the regional development is relatively balanced. However,the central city and suburban counties are quite different. 2) The ecological health status of land use is generally good;the area of healthy area is the largest,reaching 6 131 km^2,accounting for 46.07% of the total area;the sub-health area is the second,accounting for 29.78%;the unhealthy area is the smallest,accounting for 24.15%. 3) The health level of the land use ecosystem has strong spatial correlation,spatial agglomeration pattern is significant,and spatial correlation is mainly positive correlation,mainly HH type or LL type accumulation area. 4) The difference in human activities is the main factor affecting the spatial differentiation of the ecological health level of the land use in the city. The difference in natural system resilience is a secondary factor. Soil properties,topography and policy regulation are other factors that lead to spatial differentiation of ecosystem health. Therefore,tightening the capacity on the line,absorbing the ecological bottom line,adhering to the intensive use of the land,optimizing the spatial layout of the"three students",adjusting the industrial structure,and developing eco-tourism will be necessary for Yibin City to improve the ecological health level of the land use and create an ecological mountain culture city measures.

关 键 词：国土利用生态健康 格网模型 空间探索性分析 地理探测器 宜宾市 

分 类 号：F301[经济管理—产业经济]