云南省屏边县土地利用/土地覆盖时空动态研究

以卫星遥感技术（RS）、地理信息系统（GIS）等技术和方法为支撑，对云南省屏边苗族自治县1987年和1999年的土地利用/土地覆盖现状及空间结构演变进行了时空变化叠合分析。结果表明：从总的土地利用/土地覆盖变化（LUCC）分布格局和变化趋势上看，1987-1999年，林地为主的土地利用格局保持了一个稳定的小幅度变化；变化最活跃的是荒草地，每年平均减少3.77%，其中最大的一部分演变为耕地，占演变总数的49.30%。空间叠合分析发现：耕地的变化与海拔有着密切的联系，主要变化发生在800-1500m，以及1500m以上的中高海拔地区。人类活动的干扰是该研究区LUCC变化的主要驱动因子。

Temporal and spatial Dynamic Study on Land Use Change and Cover(LUCC)in Pingbian County of Yunnan Province

Based on the RS and GIS technologies,temporal and spatial dynamic on Land Use Change and Cover(LUCC) for 1987 and 1999 in Pingbian Miao Nationality Autonomous County of Yunnan Province was studied.The results showed that the land use pattern given priority to the forest land kept steady and had a small range of change from 1987 to 1999.The most active change was the decrease of the barren,which had averagely decreased by 3.77% per year within 12 years periods.Totally 49.3% of the barren became the farmland.The change of the farmland was consanguineously related to the altitude.The most significant change appeared at the altitude of 800-1500 m and the middle and high latitude regions upwards of 1500 m,where more barren became the farmland.Human activities were the main driving force of LUCC.