快速城市化地区“三生空间”时空格局演变特征——以武汉市为例

The spatiotemporal pattern evolution characteristics of the‘production-living-ecological space"in rapidly urbanizing areas:a case study of Wuhan City

针对城市化进程不断加快带来的“三生空间”冲突矛盾加剧的问题,急需研究促进协调发展和可持续土地利用的辅助决策技术。以武汉市为例,借助遥感影像解译、GIS空间叠加等技术,引入土地利用动态度、土地利用转移矩阵等方法,分析其“三生空间”格局演变态势及空间分异。研究结果表明:(1)1990—2020年武汉市“三生空间”格局总体在水平和垂直维度上差异明显,其中生活空间集中分布在海拔100 m以下区域,生产空间、生态空间随海拔的升高递减;(2)武汉市“三生空间”土地利用动态度变动显著,土地利用空间不稳定性增加,2010—2020年间综合土地利用动态度最高,地类之间的转化最为剧烈;(3)武汉市“三生空间”中生产空间以下降趋势为主,生活空间呈现扩大趋势,生态空间总体呈现细微上升;(4)武汉市“三生空间”用地功能转变随着城市化进程而加快,30 a来主要表现在工矿生产空间侵占农业生产空间,蓝色生态空间挤压农业生产空间。研究内容可为实现“三生空间”的协调发展和可持续土地利用提供样本意义和应用价值。

In response to the escalating conflicts and contradictions in the"production-living-ecological space"brought about by the accelerating urbanization process,there is an urgent need to study auxiliary decision-making technologies to promote coordinated development and sustainable land use.This article takes Wuhan City as an example,using remote sensing image interpretation,GIS spatial overlay and other technologies,and introducing methods such as land use dynamics and land use transfer matrix,to analyze the evolution trend and spatial differentiation of its"production-living-ecological space"pattern.The research results indicate that:①From 1990 to 2020,the overall pattern of"production-living-ecological space"in Wuhan City showed significant differences in both horizontal and vertical dimensions,with living spaces concentrated in areas below 1o0 m above sea level,and production and ecological spaces decreasing with increasing altitude;@The dynamic degree of land use in the"production-living-ecological space"of Wuhan City has significantly changed,and the instability of land use space has increased.From 2010 to 2020,the comprehensive land use dynamic degree was the highest,and the transformation between land types was the most intense In the"production-living-ecological space"of Wuhan,the main trend is the downward trend of production space,the expansion trend of living space,and the overall slight increase of ecological space The transformation of land use functions in the"production-livingecological space"of Wuhan has accelerated with the urbanization process,mainly manifested in the encroachment of industrial and mining production space on agricultural production space,and the squeezing of agricultural production space by blue ecological space in the past 30 years.The research content can provide sample significance and application value for achieving coordinated development of the"production-living-ecological space"and sustainable land use.