【作者】 廖赤眉； 李生明； 胡宝清； 严志强； 林婷；

【Author】 Liao Chimei;Li Shengming;Hu Baoqing;Yan Zhiqiang;Lin Ting;Department of Resource and Environment Science,Guangxi Teachers College;

【机构】 广西师范学院资源与环境科学学院；

【摘要】 应用遥感和GIS技术及数理统计方法,以广西都安瑶族自治县为研究区,利用1977年、1988年和1999年的遥感数据,研究了20世纪70年代中后期以来都安LUCC的过程、趋势及其影响因素。结果表明:①22年来都安的坡耕地一直呈增长趋势,增幅达120.56%;裸岩地和建设用地稳定快速增长;有林地在前一时段内(1977~1988)增加,后一时段内(1988~1999)减少;灌丛地、疏林地、草地等面积逐步减少,但减少的幅度也在缩小。②自20世纪70年代中后期以来都安LUCC趋缓,类型转换呈现双向的态势,处于准平衡状态。③都安LUCC受人为因素影响显著,人口密度大、人口素质低和经济发展的需要是LUCC的主要因素,而人口异地安置和封山育林等政策因素则使LUCC趋缓。更多还原

【Abstract】 Using remote sensing image of 1977,1988 and 1999,taking Du’an Yao Autonomic County as the case study area,the process,trend and influential factors of karst region LUCC since the 1970 s were analyzed by applying the methods of remote sensing(RS),geographic information system(GIS) and statistics.The main results were as follows:①The area of slope field kept an increase trend in 1977- 1999;bare rock and construction land increased stably and quickly;the area of wood land increased in 1977- 1999 but decreased in 1988- 1999;shrub,thin stocked land and grassland decreased gradually but went flat later.②The LUCC in Du’anhashad a slow trend since 1977 and the index was quasi-balanced with the transitional process in bidirection.③It is prominent that the LUCC in Du’an was influenced by human factors,high population density,and low quality of population.更多还原