基于国土空间开发适宜性的城市群绿心生态空间演变与重构研究

Study on Evolution and Reconstruction of Green Heart Ecological Space of Urban Agglomeration Based on Suitability of Land and Space Development

生态空间是保障人类社会与自然环境和谐共处的重要生态屏障,发挥着重要的生态功能。城市群生态空间变化与重构,是生态文明建设的必然要求,也是地理学、生态学、城乡规划学等学科亟待解决的科学问题。运用ArcGIS等软件对数据进行处理,建立空间属性数据库,构建了长株潭城市群生态空间用地转移矩阵,定量分析了生态用地的主要流向。结果表明:1980~2017年总共减少了4980.54 hm^(2),平均每年减少184.46hm^(2)。2000~2017年为急速减少阶段,年平均减少量接近过去20年的8倍,动态度为-0.5174%。林地转出面积最多达到26.22 hm^(2),耕地转出面积为22.08 hm^(2);分别占到转出总面积的52.65%和44.33%。从生态水网络系统、生态斑块系统和生态基质系统3方面提出长株潭城市群绿心生态空间重构策略。

Ecological space is an important ecological barrier to ensure the harmonious coexistence of human society and natural environment,and plays an important ecological function.The change and reconstruction of urban agglomeration ecological space is an inevitable requirement of ecological civilization construction,and also a scientific problem to be solved in geography,ecology,urban and rural planning and other disciplines.By using ArcGIS and other software to process the data,the spatial attribute database was established,the transfer matrix of ecological spatial land in Changsha Zhuzhou Xiangtan Urban agglomeration was constructed,and the main flow direction of ecological land was quantitatively analyzed.The results show that:from 1980 to 2017,a total of 4980.54 hectares were reduced,with an average annual reduction of 184.46 hectares.The period from 2000 to 2017 is a period of rapid decrease,with an average annual decrease of 8 times that of the past 20 years and a dynamic degree of-0.5174%.The maximum area of forest land transferred out was 26.22 hectare,and the area of cultivated land transferred out was 22.08 hectare,accounting for 52.65%and 44.33%of the total transferred out area respectively.The maximum area of forest land transferred out is 26.22 hectare,and the area of cultivated land transferred out is 22.08 hectare;They accounted for 52.65%and 44.33%of the total transferred out area respectively.From three aspects of ecological water network system,ecological patch system and ecological matrix system,this paper puts forward the reconstruction strategy of green core ecological space in Changsha Zhuzhou Xiangtan Urban Agglomeration.