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Calculating Method of Gap Character Based on GIS: Take Abies georgei Virgin Forest on Segrila mountain of Nyingchi Area in Tibet for Example
Author(s): 
Pages: 17-20
Year: Issue:  1
Journal: Journal of Northeast Forestry University

Keyword:  Gap sizeGap shapeGISThe buffer method;
Abstract: 基于地理信息系统(GIS)软件的缓冲区分析功能提出了一种林隙特征的定量求算方法(简称“缓冲区法”),并与相邻网格样方实测的林隙特征进行方差分析.结果表明,缓冲区法与相邻网格样方实测的林隙大小和林隙形状等林隙特征均无显著差异,且树冠越接近圆形,林隙位置、形状和面积也越接近实际.因此,缓冲区法是一种快速、可靠的林隙大小测定方法,可作为目前地面法的重要补充.
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