矿粮复合区“三生”空间冲突诊断及演化特征分析——以大冶市陈贵镇为例

Diagnosis and Optimization of‘Production-Living-Ecology’Space Conflict in the Mine-Grain Mixed Zone-An Example of Chengui Town,Daye City

[目的]促进乡镇级矿粮复合区空间结构协调稳定,为国土空间规划的合理布局及实施提供科学参考。[方法]以矿粮复合区陈贵镇为例,基于生命周期法选取1986—2020年的5个研究时间节点,通过空间现状图和转移矩阵解释空间格局变化,构建改进的空间冲突测度模型,利用ArcGIS 10.2结合Fragstats 4.2软件分析空间冲突演化特征,使用Google Earth历史影像验证了冲突结果。[结果]农业生产空间和生态空间是转入和转出面积最大的两类空间类型,“耕地—林地”互转成为最显著的土地转换方式;1986—2020年,陈贵镇“三生”空间冲突整体有上升的趋势,在矿业衰退期,较弱、中等和强空间冲突空间单元占比分别减少3.2%,3.09%,0.22%,较强空间冲突占比增加6.51%;“三生”空间的冲突等级除了生活空间,均集中在较弱空间冲突和中等空间冲突等级,两者面积占比超过70%;借助Google Earth历史影像进行对比验证,发现“三生”空间冲突结果与空间现状较吻合。[结论]矿粮复合区受城市化和工业化的影响较大,空间冲突特征明显,参考空间冲突诊断结果,可针对性地实施空间冲突缓解措施,促进地区的可持续发展。

[Objective]The aims of this study are to promote the coordination and stability of the spatial structure of township-level mine-grain mixed zone,and provide scientific reference for the rational layout and implementation of territorial spatial planning.[Methods]Chengui Town in the mine-grain mixed zone was taken as an example.Five research time nodes from 1986 to 2020 were selected based on the life cycle method.The spatial pattern changes were explained by the spatial status map and transfer matrix.An improved spatial conflict measurement model was constructed.ArcGIS 10.2 in combination with Fragstats 4.2 was used to analyze the trend of spatial conflict.The conflict results were verified using Google Earth historical images.[Results]Agricultural production space and ecological space were the two types of space with the largest transfer area in and out,and the‘arable land-forest land’mutual conversion had become the most significant land conversion mode.From 1986 to 2020,the overall trend of‘production-living-ecology’space conflicts in Chengui Town was on the rise,and during the mining recession,the proportion of weaker,medium and strong space conflicts decreased by 3.2%,3.09%and 0.22%,respectively,and the proportion of stronger space conflicts increased by 6.51%.The conflict levels of the‘production-living-ecology’space concentrated in the weak space conflict and the medium space conflict level,except for the living space,which accounted for more than 70%of the area.With the help of Google Earth historical images for comparative verification,it was found that the results of the‘production-living-ecology’space conflict were consistent with the current spatial situation.[Conclusion]The mine-grain mixed zone is greatly affected by urbanization and industrialization,and the characteristics of spatial conflict are obvious,and the spatial conflict mitigation measures can be implemented with reference to the diagnosis results of spatial conflict to promote the sustainable development of the region.