摘要
为了解西宁市南北山20~30 a油松人工林健康水平,以西宁市南北山20~30 a油松人工林为研究对象,运用主成分分析法筛选出树高年均生长量、胸径年均生长量等13个评价指标,应用层次分析法确定各指标的权重,依据森林健康指数模型计算各标准地的健康指数,并使用正态等距分析的方法得到健康等级取值范围;由分析评价结果得出西宁市南北山20~30 a油松健康林分占6. 45%,亚健康林分占22. 58%,中健康林分占38. 71%,不健康林分占32. 26%;按照隶属度最大原则,西宁市南北山20~30 a油松人工林处于中健康水平。
To understand the health level of Pinus tabuliformis Carr.plantation forest in Nan bei mountain in xining;In this paper,the Pinus tabuliformis Carr.plantation forest in Nan beimountain in xining,20-30 year was taken as the research object;Using the principal component analysis method to screen out 13 evaluation indicators,such as the average annual growth of tree height and the average annual growth of breast diameter,applying AHP to determine the weight of each index,calculate the health index of each standard area according to the forest health index model,and using the normal isometric analysis method to obtain the health level value range;Analysis shows that healthy forests account for 6.45%,sub-health forests account for 22.58%,medium healthy forests account for 38.71%,and unhealthy forests account for 32.26%.According to the principle of maximum membership,the Pinus tabuliformis Carr.plantation forest in Nan beimountain in xining is the middle-health level 20-30 year.
作者
谷鑫鑫
司剑华
GU Xinxin;SI Jianhua(College of Agriculture and Animal Husbandry,Qinghai University,Xining 810016,China)
出处
《青海大学学报》
2020年第3期34-43,共10页
Journal of Qinghai University
基金
青海省科学技术厅项目(2016-HZ-811)。
关键词
层次分析法
油松
人工林
健康评价
analytic hierarchy process
Pinus tabuliformis Carr.
plantation
health evaluation
作者简介
谷鑫鑫(1995-),女,新疆哈密人,青海大学在读硕士研究生;通信作者:司剑华,E-mail:sijianhua1@163.com。
