摘要
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。
Quantitative calculating method （buffer method） based on buffer analysis function of geographical information system （GIS） was provided for observing gap character, and the analysis of variance was calculated by combining the quantitative calculating method with adjacent network grid measure. The results show that there is significant difference on the size and the shape of gap character between two methods. The more the crown width is close to round, the more the position, the shape and the area of gap are close to reality. Therefore, the buffer method is a fast and reliable determination for the size of the gap as well as an important supplement for the ground method.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2013年第1期17-20,共4页
Journal of Northeast Forestry University
基金
国家自然科学基金项目(31060113)
国家林业局定位观测研究项目
