基于SPOT/VEGETATION数据的陕甘宁退耕还林区植被分类

The Vegetation Classification of the Return Farmland to Woods or Forest Region in Shananxi-Gansu-Ningxia Based on SPOT/VEGETATION Data

以评估退耕还林/还草的气候、生态效应为目的,利用多时相SPOT/VEGETATION数据,将监督分类与非监督分类相结合,选定合适的阈值对西北地区植被及作物进行分类,分类结果与统计面积、实际调查结果相比,精度在85%以上。

In order to assess the climatical and ecological effect which returned the farmland to woods or forest, the vegetation and crop in Northwest China with suitable threshold value were classified in this experiment by using multi-temporal SPOT/VEGETATION dada and combing supervised classification with unsupervised classification. Compared with the data from Statistical Department and actual investigation, the precision of the classified result was above 85%.