长岭县土地利用景观格局变化研究

Study on the Land Use Pattern Changes in Changling County

以吉林省长岭县为研究区，综合运用遥感影像和其他相关资料得到研究区1995和2000年的土地利用数据；借助地理信息系统的空间分析功能，获得多时期的土地利用变化信息，进行景观格局变化研究。结果表明，1995～2000年，土地利用格局变化趋势是林地增加，耕地、草地、未利用地面积减少，水域和居民点用地基本稳定；土地利用斑块数目增加，分维数总体变化幅度不大，景观多样性呈上升趋势，景观破碎度增加。由此表明，人类活动对研究区土地利用格局影响程度不断加深。

Taking Changling County of Jilin Province as the study area, using remote sensing image and other correlative data comprehensively, the land use data in 1995 and 2000 were obtained. In virtue of the spatial analysis function of GIS, the multi-period land use change information was acquired to study the landscape pattern changes. The results indicated that the land use pattern change trend during 1995 - 2000 included the increase of woodland, the area decrease of arable land, grassplot and unused land, the basic stability of water areas and residential land. The plaque number of land use increased and the fractal dimension changed little on the whole. And the landscape diversity showed an increasing trend and the landscape fragmentation increased. It was shown that the influencing degree of human activities on the land use pattern in the research area was gradually deepened.