摘要
基于山美水库流域1985与2006年两期土地利用TM遥感解译数据,在GIS技术的支持下,构建土地利用结构变化的周长—面积分形模型,计算得出了1985—2006年山美水库流域各种用地类型分形维数与稳定性指数的变化量,并分析了土地利用空间格局的变化。结果表明,山美水库流域整体的土地利用分形维数从1985年的1.292增加到2006年的1.381,整体上的土地利用空间结构变得更复杂、更不规整;耕地与园地的分形维数减小,其余用地类型均增加。山美水库流域整体的土地利用稳定性指数从1985年的0.208减少到2006年的0.119,整体的土地利用空间结构趋于不稳定;耕地、园地、水域的空间结构变得更稳定,其余用地类型均趋于不稳定。1985—2006年由于人类活动对建设用地的干扰较为强烈等原因,流域建设用地与水域的分形维数增加量最大,土地使用的无序性增强最突出,今后应重点加强对山美水库流域建设用地与水域的有序利用规划管理。
Based on 1985 and 2006 Landsat TM images database of Shanmei Reservoir watershed, supported by the techniques of GIS, the fractal structure model of sorted land spatial distribution pattern was built, and then the fractal dimension and stability indexes of each major land use type were acquired and the changes of the land use spatial pattern were investigated. The results showed that the fractal dimension value of Shanmei Reservoir watershed increased from 1.292 in 1985 to 1.381 in 2001; the whole land use spatial structure was complicated. The fractal dimension values of farm land and orchard land decreased, while the values of the other land types increased. The spatial structure stability index of land use in Shanmei Reservoir watershed decreased from 0.208 in 1985 to 0.119 in 2006. The whole spatial structure stability of land use of the watershed tended to decrease. From 1985 to 2006, due to the strong human disturbance to construction land in Shanmei Reservoir watershed and other reasons; the increase in fractal dimension of construction land and water land was the biggest; the disorder enhanced of construction land and water land was the most prominent. The construction land and water land of Shanmei Reservoir watershed should be planned and managed more properly from now on.
出处
《生态科学》
CSCD
2016年第3期129-133,共5页
Ecological Science
基金
滨州市环境工程技术重点实验室开放基金项目(编号:bzhks201403)
滨州学院科研基金项目(编号:BZXYG1414)
国家安监总局2015年安全生产重大事故防治关键技术科技项目(编号:shandong-0052-2015AQ)
山东省自然科学基金项目(ZR2014EEP009)
关键词
土地利用变化
分形理论
稳定性
山美水库流域
land use structure change
fractal theory
stability
Shanmei Reservoir watershed
