南岳森林景观格局特征及其稳定性研究

Study on Landscape Pattern and Stability of Nanyue Forest

  • 摘要: 以2015年南岳森林资源分布图为基础,划分为9类森林景观,筛选出8个景观格局指数,运用主成分分析法对森林景观格局进行分析,进而利用森林景观稳定性评价模型对各类森林景观稳定性进行评价,并基于Kriging插值法分析森林景观稳定性分布特征,对研究区森林景观稳定性进行区划。结果表明:南坡林斑分布零碎,主要由国外松、马尾松等针叶林组成;北坡林斑整体连片,主要由竹林、杉木林、疏林、灌木林向高海拔递变,阔叶树林散布于山体两侧沟壑带。各类森林景观稳定性差异显著,稳定性从大到小依次为竹林、杉木林、其他林、疏林、马尾松林、灌木林、国外松林、阔叶树林。整体上北坡森林景观相较于南坡稳定,且稳定性呈现出较为明显的随衡山山脉主山脊线南北分异的特征。斑块规模大、形状整体、分布聚集度高的景观类型其稳定性亦较好,而斑块规模较小、形状简单、分布零碎的森林景观稳定性则较低。研究成果可为研究区森林管护、生态规划提供参考。

     

    Abstract: The basis of this research is the 2015 Nanyue forest resource distribution map. At the same time, 8 pattern indices were screened out of its 9 types of forest landscapes. Then, the principal component analysis method was used to analyze the overall forest landscape pattern and use its stability related evaluation models are used to evaluate the stability of various forest landscapes. Subsequently, the researchers used the Kriging interpolation method to study the distribution characteristics of the related stability of the forest landscape, and divided the related stability.The research results show that the forest spot distribution on the south slope is fragmentary, and the forest is mainly composed of coniferous forests such as foreign pine and masson pine. While the forest spot on the northern slope is more integrated, and the forest is mainly composed of bamboo forest, fir forest, sparse forest, and shrub forest and the slope gradually changes to high altitude, broad-leaved forests are distributed in the gully parts on both sides of the mountain. The stability of various forest landscapes has obvious differences, and the differences from large to small are bamboo forest, fir forest, other forests, sparse forests, pine forests, shrub forests, foreign pine forests, broad-leaved forests, and so on. At the same time, the landscape on the north slope is more stable than the forest on the south slope as a whole, and the stability of the forest as a whole is based on the obvious differences between the north and south of the main mountain range of the Hengshan Mountains. The larger the size of the forest patch, the more its overall shape, and the higher the degree of distribution and aggregation, the better the stability of the forest landscape. For a forest landscape with a smaller size, simple shape, and irregular distribution, the stability is low. The results can provide references for forest management and care, ecological planning.

     

/

返回文章
返回