1997-2017年太原城区景观格局变化及其驱动力分析

Analysis on the Change of Landscape Pattern and its Driving Forces in Taiyuan City from 1997 to 2017

对1997,2007,2017年的遥感影像进行解译,分别得到太原城区不同时期景观格局类型图,对其进行景观动态度、景观转移矩阵、景观格局重心转移和景观指数分析,结果表明:近20年来太原城区的景观格局发生了剧烈变化,建筑用地呈现增长趋势,草地景观向其他景观类型发生了大量转移;时间尺度上,1997-2007年景观破碎度加剧,而2007-2017年景观破碎度缓和;空间尺度上,太原城区20年间除林地、耕地外,其他景观类型的重心转移都不明显,而林地景观重心有持续向南移动趋势。太原城区景观格局变化的驱动力由自然因素(降水、气温、地形)、经济因素和社会政策因素共同决定。

The remote sensing images of the three periods of 1997,2007 and 2017 were interpreted,and the landscape pattern maps of different periods in Taiyuan City were obtained.The analysis of landscape dynamics,landscape transfer matrix,landscape pattern center of gravity transfer and landscape index was carried out.The results show that the landscape pattern of Taiyuan City has undergone dramatic changes in the past 20 years,and the construction land has shown a growing trend.The grassland landscape has undergone a lot of transfer to other landscape types.From the time scale,the landscape fragmentation increased from 1997 to 2007,but was moderated from 2007 to 2017;from the spatial scale,except for forest land and cultivated land,the focus of other landscape types in Taiyuan City has not been significantly shifted in the past 20 years,and the focus of forest landscape has been moving southward.The driving force of its landscape pattern change is determined by natural factors(precipitation,temperature,topography),economic factors,and social policy factors.