“三生空间”视角下会泽县土地利用变化及耦合协调度时空格局分析

Analysis on Spatial-temporal Pattern of Land Use Change and CouplingCoordination Degree in Huize County from the Perspective of"Production-Living-Ecological Space "

在生态较为脆弱且位置偏远的欠发达地区,生态环境保护和经济发展之间的矛盾长期共存。为有效破解这一发展困境,以曲靖市会泽县为研究对象,运用ArcGIS 10.8工具对2000、2010、2020年该地区的“三生空间”土地利用变化进行分析。通过时空分析、转移矩阵和耦合协调度模型,探讨“三生空间”视角下土地利用变化的时空特征和影响因素。结果显示:(1)会泽县的土地覆盖以林地、草地和耕地为主,建设用地面积明显增长,主要分布在城镇附近,而未利用地面积变化不明显。(2)建设用地、耕地、林地、草地、水体之间发生相互转变,其中草地-林地的转化量最大,但也有相当一部分林地和耕地转化为草地;此外,建设用地、未利用地和水体均有小部分相互转化,但变化不显著。(3)“三生空间”的耦合协调度变化D与耦合度C的变化相似,主要表现为功能中度协调区占比增加,功能高度不协调区占比减少。总体上看,会泽县土地利用的变化相对于大型城镇仍然较为缓慢。研究结果可为当地可持续发展提供科学依据。

In undeveloped areas with fragile ecology and remote locations,conflicts between ecological environmental protection and economic development has coexisted for a long time.In order to effectively solve this development dilemma,Huize County in Qujing City is taken as the research object,and ArcGIS10.8 tool is used to analyzes the land-use change of"Production-Living-Ecological Space"in the study area in 2000,2010 and 2020.Spatio-temporal analysis,transfer matrix and coupling coordination degree model are used to analyze the spatio-temporal characteristics and influencing factors of land use change under the perspective of"Production-Living-Ecological Space"in the study area.The results showed that:(1)The land cover of Huize County is dominated by forest land,grassland and cropland.The area of construction land has grown significantly and is mainly located in the vicinity of towns,while the area of unutilized land has not changed significantly.(2)Mutual transformation occurs between built-up land,cropland,forest land,grassland,and water bodies,with the greatest amount of grassland-forestland transformation,but also a significant portion of forest land and cropland transformed into grassland;in addition,built-up land,unutilized land,and water bodies all have small interconversions,but the changes are not significant.(3)The change in the coupling coordination degree D of Production-Living-Ecological Space is similar to the change in the coupling degree C,which is mainly characterized by an increase in the proportion of moderately functionally coordinated zones and a decrease in the proportion of highly functionally uncoordinated zones.Overall,the tate of land use change in Huize County is still slow relative to large towns.The results of the study can provide scientific basis for local sustainable development.