摘要
本文在判明低效林分改造试验林的现实林分结构具有趋同性的情况下,采用主成份分析和谱系聚类法进行聚类,依据聚类的结果作了水土保持效应的分析。通过逐步回归分析,揭示了林分结构要素在控制水土流失方面的作用。
On the basis of the fact that the fact that the structures of actual reforested stands developed in the same trend and by the clustering analysis,the author studied the effects of the reforested stands and confirmed that the crucial importance of the stands structures is to control the erosis of water and soil.
出处
《四川农业大学学报》
CSCD
1994年第4期481-485,共5页
Journal of Sichuan Agricultural University
关键词
林分结构
聚类分析
水土保持
林分组成
STRUCTURE
CLUSTER ANALYSIS
SOIL AND WATER CONSERVATION
STAND STRUCTURE