中文摘要：

在R S 和G IS 技术的支持下,利用粵北连江流域1 9 8 8年和2 0 1 3 年2 期Landsat8 TM 数据,对该地区土地利用/覆盖进行动态变化研究.结合连江流域的岩溶特性,在原有土地分类体系的基础上,在石漠化地区增加重度石漠化、中度石漠化、轻度石漠化和潜在石漠化4 种类型.结果表明：（1 ）林地的面积增加最多,其次是建设用地.而在石漠化区,重度石漠化土地的面积减少最多,中度石漠化次之.轻度石漠化的面积则有所增加.（2）在非石漠化区,转出的类型主要是灌丛、林地和耕地.灌丛主要向林地转出,林地和耕地主要向建设用地和潜在石漠化区转出.而在石漠化区,主要表现为重度、中度和轻度石漠化土地向潜在石漠化转移.（3）石漠化区面积的减少主要在连州市南部和北部、连南的东北部以及阳山县的南部.灌丛向林地的转移主要表现在流域的西部,耕地向建设用地的转移则主要发生在水域附近和下游地区.

英文摘要：

Research the dynamic change of the land use/land cover with two images of Landsat8 TM data ofLianjiang basin with the support of RS and GIS technology. Combining the karst features of Lianjiang basin,increase 4 types of severe rocky desertification, moderate rocky desertification, mild rocky desertification andpotential rocky desertification on the basis of the existing land classification system. The results show that： （1）The forest area increases most, the second is construction land. In rocky desertification area, severe rockydesertification land area reduces most, the second is Moderate rocky desertification. Mild rocky desertificationarea increases. （2） In none rocky desertification area, the transfer type is brush, forest and farmland. Brushmainly transfer to forest land, forest land and farmland mainly transfer to construction land and potential rockydesertification area. In rocky desertification area, severe, moderate and mild rocky desertification land is mainlytransfer to potential rocky desertification. （3） The decrease of rocky desertification area mainly in the south andnorth of Lianzhou city, northeast of the Liannan county, and the south of Yangshan country. Bush transfer to theforest land mainly show in the west of the river basin, and the transfer of farmland to construction land mainlyoccurred in the waters near and the downstream areas.