一、引言西双版纳曾被称为绿色宝地。西双版纳的森林不仅是生态平衡的积极因素,而且还具有独特的科学价值。但是,其森林面积却在日益缩小,面临生态灾难的严重威胁。因此,各方面对森林动态变化极为关切。鉴于此,我们利用遥感图象,进行 First, the introduction Xishuangbanna was once known as the green treasure. The forest in Xishuangbanna is not only a positive factor of ecological balance, but also has unique scientific value. However, its forest area is shrinking day by day, facing the serious threat of ecological disasters. Therefore, all parties are extremely concerned about the dynamic changes of the forest. In view of this, we use remote sensing images