南京林业大学学报（自然科学版）2024，Vol.48Issue(1)：196-204,9.DOI:10.12302/j.issn.1000-2006.202202029
基于结构方程模型的大兴安岭北部天然林森林生态系统恢复能力评价研究
Evaluating forest ecosystem restoration ability of natural forest in northern Greater Khingan Mountains by a structural equation model
摘要
Abstract
[Objective]This study aimed to investigate the dynamic changes of forest ecosystem structure,function,climate and site type factors during the restoration of natural forest ecosystems in northern Greater Khingan Mountains,screen out the key influencing factors,and use scientific methods to scientifically evaluate its forest ecosystem restoration capacity.This study provides a reference for exploring effective management measures to improve the ecological function of Greater Khingan Mountain natural forest.[Method]Based on field survey data,discriminant validity test was used to determine the evaluation index system of forest ecosystem restoration capacity,and a structural equation model for forest ecological restoration capacity evaluation was established according to the conduction mechanism to determine the index weights.Based on K-means cluster analysis and the equidistant division method,a classification standard for the forest ecological restoration capacity in Greater Khingan Mountains was established.[Result]The weights of four criterion factors in the evaluation index system of forest ecological restoration capacity in Greater Khingan Mountains-forest productivity,stand structure,climate factor and site type are 0.339,0.192,0.256 and 0.213 respectively;The comprehensive scores of the ecological restoration capacity evaluation of the two kinds of forest in the study area are in the range of 1.70 to 3.53,and the distribution of restoration capacity grades conformed to a normal distribution.The restoration capacity grades were mainly concentrated in difference,poor and good states.Overall,the ecological restoration capacity grades of the two forest types were as follows:mixed forest＞pure forest.[Conclusion]The forest ecosystem restoration capacity is mainly affected by forest productivity,whereas stand structure,climate factors and site types have relatively little impacts on ecological restoration capacity,and the ecological restoration capacity of some areas of the Greater Khingan Mountains is still poor.关键词
森林生态恢复能力/结构方程模型/指标权重/大兴安岭北部Key words
forest ecological restoration capacity/structural equation model/index weight/northern Greater Khingan Mountains分类
农业科技引用本文复制引用
萨如拉,王子瑞,滑永春,呼日查,刘磊,高明龙,于晓雨..基于结构方程模型的大兴安岭北部天然林森林生态系统恢复能力评价研究[J].南京林业大学学报（自然科学版）,2024,48(1):196-204,9.基金项目
内蒙古自治区科技计划(2020GG0067). （2020GG0067）
