阿尔泰山森林景观格局的稳定性

Stability of Forest Landscape Pattern in Altay Mountains

[目的]定量分析阿尔泰林场的森林景观稳定性,为科学合理地规划建设阿勒泰林场森林景观提供依据。[方法]以2016年Landsat 8OLI影像作为数据源,运用主成分分析法构建研究区森林景观稳定性评价模型,利用Kriging插值分析整个研究区的森林景观稳定性状况。[结果]灌木林地和乔木林地是研究区的优势森林景观,分布比较广泛,苗圃地和林业辅助用地景观类型面积较小,但分布比较集中;森林景观呈现出较高的景观异质性;森林景观稳定性差异较大,其稳定性大小依次为:灌木林地>乔木林地>苗圃地>宜林地>疏林地>林业生产辅助用地。[结论]2016年森林景观稳定性整体处于较高水平,分布区域差异比较均衡,西南部山区生态环境良好,森林景观结构完整,东部和东北部山区最差,应加强生态环境保护力度,同时维持西南部的保护力度,从而促进森林景观结构更加合理。

[Objective]To quantitative analyze the landscape stabiligy of Altay forest farm in order to provide the basis for planing and constructing the forest landscape scientifically and rationally.[Method]Taking the Landsat 8 OLI image in 2016 as the data source,landscape stability assessment models were created by using principle component analysis method.The stability of forest landscape in the whole research area was analyzed by Kriging interpolation.[Results]Shrub land and arbor forest were the dominant forest landscape in the study area,which were widely distributed.The area of nursery land and forestry auxiliary land was small,but the distribution was more concentrated.Forest landscape presented high landscape heterogeneity.The stability of forest landscape among different landscape types was significantly different.The stability was ranked as:shrub land>arbor forest>nursery land>barren land>sparse woodland>forestry auxiliary land.[Conclusion]In 2016,the stability of forest landscape was at a high level,the distribution of regional differences was relatively balanced.In the southwest mountainous areas,the ecological environment was good,and the forest landscape structure was intact.