森林工程2025，Vol.41Issue(3)：495-504,10.DOI:10.7525/j.issn.1006-8023.2025.03.006
东北地区落叶松林树种多样性和空间结构分析
Analysis of Tree Species Diversity and Spatial Structure of Larix gmelinii Forests in Northeast China
摘要
Abstract
The Larix gmelinii forests is one of the most important forest types in Northeast China,playing a crucial role in maintaining the stability of the forest ecosystem in the region.The woody plants in the permanent plot of Larix gmelinii forests in Northeast China were taken as the research object.Through field plot investigation,diversity index and spatial structure characteristics calculation,combined with variance partitioning analysis and redundancy analysis,this study explored the characteristics and influencing factors of tree species diversity in Larix gmelinii forests.The results showed that the average tree species richness of Larix gmelinii forests was 10.75 in Northeast China,Simpson index was 0.72,Shannon-Wiener index was 1.69,and Pielou evenness index was 0.76.The average mingling intensity was 0.57,indi-cating that the forest stands were moderately mixed.The uniform angle index was 0.54,and the forest stands were clus-tered.The breast diameter dominance was 0.51,indicating that the forest growth was in a moderate state.The spatial structure characteristics of forest stands and geoclimatic conditions jointly explained 35.9%of the changes in tree spe-cies diversity,followed by spatial structure characteristics,with an explanatory rate of 29.2%.Simple term effects showed that spatial structure and geoclimatic indicators such as mingling intensity,latitude,annual mean temperature,and annual mean precipitation were the main influencing factors of tree species diversity changes.The research results will provide theoretical basis and data support for the formulation of management strategies for Larix gmelinii forests in Northeast China.关键词
东北森林带/落叶松/树种多样性/林分空间结构/耦合关系Key words
Northeast forest belt/Larix gmelinii/tree species diversity/forest spatial structure/coupling relationship分类
林学引用本文复制引用
张喜亭,佘丹琦,王凯,杨艳波,田盼立,王文杰..东北地区落叶松林树种多样性和空间结构分析[J].森林工程,2025,41(3):495-504,10.基金项目
乐山师范学院高层次人才引进科研启动项目(RC2023018) （RC2023018）
乐山师范学院科研培育项目(KYPY2025-0020) （KYPY2025-0020）
国家自然科学基金(31670699). （31670699）
