不同性质保护地类型森林景观动态变化趋势

Comparative Study of Forest Landscape Changes in Two Different Types of Protected Areas

以梅里雪山(藏传佛教神山)与白马雪山(国家级自然保护区)的森林景观为研究对象,运用遥感卫星影像数据,利用景观指数法定量比较和分析梅里雪山与白马雪山1974-2010年36年间森林景观动态变化特征,评估2个不同性质保护地森林景观的动态变化趋势。结果表明,(1)不论是国家层面的自然保护区还是藏族传统性质的神山保护地,其自然生态系统都得到了有效保护。(2)1974-2010年,梅里雪山森林景观的面积与连接性几乎不变,破碎化程度呈现出轻微的增加之势,而白马雪山森林景观的面积与连接性呈现出先增后减的趋势;破碎化程度呈先减后增的变化趋势。(3)若仅从森林景观的破碎化程度和连接性程度分析,在1974-2010年的36年间梅里雪山的森林景观更为完整。

Meili Snow Mountain （ holy mountains of Tibetan Buddhism） and Baima Snow Mountain （ national na-ture reserve） were selected for case study, and the remote sensing satellite image data was used to quantitative a-nalysis the dynamic changing trend of the forest landscape during the 36 years （ 1974-2010 ） in Baima Snow Mountain and Meili Snow Mountain based on landscape index. The dynamic change of forest landscape in the two types of protected area were assessed. The results show that： （1） The ecological system have been protected ef-fectively both in the nature reserve of national level and the protected area of Tibetan holy mountain. （2） The area and connectivity of the forest landscape in Meili Snow Mountain was almost unchanged, while it increased at the beginning and then decreased in Baima Snow Mountain, and the fragmentation of the forest landscape in Meili Snow Mountain was increasing slightly but it decreased at the beginning and then increased in Baima Snow Moun-tain during 1974-2010 . （ 3 ） The forest landscape of Meili Snow Mountain was more complete than Baima Snow Mountain in terms of the fragmentation degree and connectivity degree during 1974-2010 .