利用TM资料调查土地利用状况动态变化——以玛曲县为例

Using TM data to investigate the dynamic change of land use status

介绍了运用TM资料监测玛曲县土地利用动态变化的方法和结果。对 1986年和 2 0 0 0年的TM影像的解译结果汇总看出 ,玛曲县的土地类型面积经过 14年以后 ,发生了较大的变化。从草地面积变化可看出 ,高覆盖度草地面积减少 5 2km2 ,中覆盖度草地面积减少 14 9km2 ,低覆盖度草地面积增加 2 12km2 。

In the paper, the method and result about using TM data to monitor dynamic change of land use in Maqu county were described. By interpreting TM images in 1986 and 2000, was land type areas in Maqu county had greatly changed after 14 years later. The high overlay degree grassland area had decreased 52 km 2, the middle overlay degree grassland area had decreased 149 km 2, and the low overlay degress grassland area had increased 212 km 2. It was obvious that the grassland degradation in Maqu county was severe.