基于“三生视角”的宁南山区新型城镇化与生态系统服务价值耦合关系——以固原市为例

Coupling Relationship between new Urbanization and Ecosystem Service Value in Mountainous Areas of Ningnan Based on“ecological-production-living”:a Case Study of Guyuan

以固原市为例,按照生产-生活-生态土地利用主导功能,通过遥感影像解译对研究区用地进行分类,并测算“三生”新型城镇化发展水平和土地生态服务价值,利用GIS空间技术和耦合协调度模型分析两者之间的空间耦合协调关系。通过研究发现,(1)固原市“三生”新型城镇化发展水平偏低,区域间差异不明显,且系统之间耦合协调关系不高。(2)固原市生态用地生态服务价值占主导地位,平均达到90%以上,生活用地和生产用地生态服务价值占比相对较小,其生态服务总价值从大到小依次是彭阳县、泾源县、西吉县、原州区、隆德县。(3)固原市生产空间新型城镇化与生态服务价值耦合协调关系相对较好,呈现“西北高东南低”的空间分布格局;生活空间新型城镇化与生态服务价值耦合协调关系总体呈现由区域中心城市“原州区”为核心向外围降低的态势,并且表现出“两头低中间高”的状态;生态空间新型城镇化与生态服务价值耦合协调度呈现“西高北低南中”的状态。

Taking Guyuan City as an example and“production-life-ecological land use”as the dominant function,it carries out the classification of land use in the research area through the interpretation of remote sensing image,guesses and estimates the development level of“ecological-production-living”new-type urbanization and the ecosystem services value of land,which aims to analyze the spatial coupling and coordination relationship between them with the help of GIS space technology and coupling coordination degree model.Through research,it has found that,(1)the development level of“ecological-production-living”new-type urbanization in Guyuan City is relatively low,and there are no obvious differences among each area,other all,the spatial coupling and coordination relationship of new-type urbanization is lower based on ecological-production-living.(2)In Guyuan City,the ecosystem services value of ecological land has occupied dominant place,which has reached over 90%on average;the ecosystem services value of living land and land of production is relatively low,and its ecosystem services value can be ranked in proper sequence:Pengyang County,Jingyuan County,Xiji County,Yuanzhou District and Longde County.(3)In Guyuan City,its spatial coupling and coordination relationship of new-type urbanization and ecosystem services value is relatively good,which shows the spatial distribution pattern of“keeping high in Northwest and maintaining low in Southeast”;generally speaking,the live space of new-type urbanization and the spatial coupling and coordination relationship of ecosystem services value show the trend of taking Yuanzhou District,a regional central city,as the core and decreasing from the core to the outside,and it also shows a state of“keeping low on both sides and maintain high in the middle”;the ecological space of new-type urbanization and the spatial coupling and coordination relationship of ecosystem services value show the state of“keeping high in the west,retaining low in the north and maintain middle in the South”.