Three-Dimensional Pleat Index of Forest Ecosystem in Beijing Mountainous Areas
A study was conducted to establish a three-dimensional pleat index for forest ecosystem in Beijing mountainous areas using the technology of Delaunay triangulation. Ten pieces of hectare-grade sample plots in 9 nature reserves or forest farms were selected for a survey of the basic factors of arbors. Results showed that, in the 10 pieces of sample plots, the three-dimensional pleat index of plot 5 is the maximum, and the forest ecosystem structure is the most stable; while the three-dimensional pleat index of plot 9 is the minimum, and its structure is the most unstable. Comparative analysis shows that the three-dimensional pleat index can not only reflect the stability of forest ecosystem, but also make a breakthrough in tree species limit in calculation process.
Beijing mountainous areasForest ecosystemThree-dimensional pleat index
NETL
NSTL
万方数据
维普
