关键词: 榆林市, 景观格局变化, FRAGSTATS, 遥感, GIS

Abstract: This paper takes Yulin prefecture as an example. Depending on 1986 and 2000 TM images and other data, we achieved the land-use change data after interpretation. This paper analyzed the situation of land-use change in temporal and spatial aspects with the GIS and statistic methods. The results show that the un-used land decreased by (1 305.56) km², cultivated land increased by 567.11 km², forest land and grassland increased by 99.6 km² and 616.79 km² respectively in recent 14 years. The changing rate of un-used and construction land is most high. There is obvious area differentiation in land-use change. In the direction of land-use change the conversion from un-used land to grassland and from grassland to forest and cultivated land is prominent. This paper analyzed the situation of landscape change with the GIS software ARC/INFO and FRAGSTATS. It was also showed that in the direction of landscape change the transition from un-used land to grassland and from grassland to forest and cultivated land is prominent in recent 14 years. The land conservation is well conducted in the last decade.

Key words: Yulin prefecture, landscape change, FRAGSTATS, Remote Sensing, GIS