吉林省西部“三生”空间演化特征与驱动力研究

Spatial-temporal Evolution Characteristics and Driving Forces of“Production-living-ecological”Spaces in Western Jilin Province

基于4期土地利用遥感监测数据,采用转移矩阵、信息熵、景观格局指数等方法对1990—2020年每10年间吉林省西部“三生”空间的时空变化与景观格局变化特征进行分析,利用主成分分析法对演化主要驱动力进行识别。结果表明:(1)吉林省西部生产、生活空间面积增加,生态空间面积减少。(2)生产、生态空间的分布与彼此间结构转型特征较为显著,以草地生态空间与农业生产空间的相互转换为主。(3)“三生”空间结构稳定性及用地均质性整体呈下降态势,农业生产空间对“三生”空间的控制程度呈上升态势。(4)生产空间景观格局在研究期前20年整体性增强,后10年斑块破碎化加剧;生态、生活空间的景观格局在前10年趋于整体化与规则化,后20年斑块破碎化趋势显著。(5)“三生”空间的演化是社会经济因素、农业因素与产业结构因素共同作用的结果。

Based on four phases of land use remote sensing monitoring data,the spatial and temporal changes and landscape patterns changes of the“production-living-ecological”spaces in western Jilin Province during each decade from 1990 to 2020 were analyzed by using transfer matrix,information entropy and landscape pattern index,and the main driving forces of evolution were identified by using principal component analysis.The results showed that:(1)The area of production and living space in western Jilin Province increased,while the area of ecological space decreased.(2)The distribution of production and ecological space and the structural transformation between them were significant,with the interconversion of grassland ecological space and agricultural production space being the main ones.(3)The stability of the“production-living-ecological”spatial structure and the homogeneity of land use showed an overall decline,while the degree of control of agricultural production space over the“production-living-ecological”spaces was on the rise.(4)The landscape pattern of production space had increased in the first 20 years,and the fragmentation of patches had increased in the last 10 years;the landscape pattern of ecological and living space tended to be integrated and regular in the first 10 years,and the fragmentation of patches was significant in the last 20 years.(5)The evolution of the“production-living-ecological”spaces in western Jilin Province was the result of the combined effect of socio-economic,agricultural and industrial structure factors.