摘要
以陈村水库下游泾县为研究区,Landsat TM/MSS影像为数据源,在FRAGSTATS、RS、GIS技术的支持下,研究1985～2013年间陈村水库下游的土地利用/覆被变化幅度、速度和变化方向,以及水库建设前后的景观格局变化,以期为陈村水库下游流域土地利用格局优化和生态文明建设提供科学依据。结果表明,1985～2013年间泾县的土地利用从面积上看转出为植被和农业用地的最多,建设用地次之;从变化趋势上看建设用地面积增加最明显,农业用地和水域面积都呈现出下降趋势;泾县的景观基质无明显变化,1985～2013年间均以植被为主,但其景观多样性在水库建设后呈现下降趋势,且其生境破碎化程度加深,人为干扰强度增加。
Based on Landsat TM/MSS images and supported by FRAGSTATS、RS and GIS, we focused on Jingxian County, the downstream of Chencun reservoir, to study its changes of LUCC between 1985 and 2013, including rangeability, velocity and directions, as well as indexes of landscape ecology before and after the construction of Chencun reservoir, in the hope of providing scientific basis for optimization of land-use pattern and ecological civilization in this area. It was shown from the results that in terms of size, the land use in Jingxian County had been transferred to vegetation and agricultural land mostly during these years, followed by built-up land. When it comes to its variation tendency, builtup land increased most obviously while both agricultural land and waters were on a declining curve. Besides, the landscape matrix in Jingxian County didn't show obvious changes, for this area was mostly covered with vegetation during the study period, while its landscape diversity declined, with the degree of habitat fragmentation and intensity of human-caused disturbance increasing after the reservoir construction.
出处
《地理空间信息》
2018年第10期73-77,11,共5页
Geospatial Information
基金
国家自然科学基金资助项目(41771221)
中国科学院数字地球重点实验室开放基金资助项目(2015LDE012)
关键词
陈村水库下游
LUCC
景观格局
动态变化
downstream of Chencun reservoir
LUCC
landscape pattern
dynamic change
