新疆林业生态环境中的木垒胡杨林群落特征研究  

Characteristics of Populus euphratica Community of Mulei in Forest Ecological Environment of Xinjiang

作　　者：张琴[1] 李倩 单奇[1] ZHANG Qin;LI Qian;SHAN Qi(Xinjiang Agricultural Vocational Technical College,Changji,Xinjiang 831100,China)

机构地区：[1]新疆农业职业技术学院,新疆昌吉831100

出　　处：《林业调查规划》2024年第3期102-107,共6页Forest Inventory and Planning

基　　金：新疆科研启动基金计划项目(2018-BS-124);新疆农业职业技术学院级课题(XJNZYSK202116)。

摘　　要：对新疆林业生态环境中木垒胡杨林群落的多样性特征进行研究,分析胡杨林群落的相似度变化趋势,通过个体数对数和失稳率研究胡杨林的结构与动态特征。结果表明:在多样性特征中,中、下游区域临界点的胡杨林群落丰富度最高,中游区域的丰富度最小;生态输水前,下游区域的胡杨林群落均匀度指数最小,中游区域的均匀度指数最大,生态输水后,中、下游区域临界点处的均匀度指数最大,下游区域的均匀度指数最小;生态输水后的物种多样性高于生态输水前的物种多样性,下游区域的物种多样性受生态输水的影响较小;在相似性特征中,Jaccard指数和Sorenson指数在不同区域内的变化趋势相似;在胡杨林结构与动态特征中,胡杨林种群在上游区域中的数量较多,种群的个体数与高度级呈反比。The diversity characteristics and the similarity trend of Populus euphratica communities in forestry ecological environment were studied.The structure and dynamic characteristics of Populus euphratica forests were analyzed through logarithmic individual numbers and instability rates.The results showed that in the diversity characteristics,the richness of Populus euphratica communities near the boundary points in the midstream and downstream areas was the largest,while the richness in the midstream regions was the smallest;before ecological water transfer,the evenness index of Populus euphratica communities was the smallest in the downstream areas but was the largest in the midstream areas,while after ecological water transfer,the evenness index was the largest near the boundary points in the midstream and downstream areas but was the smallest in the downstream areas;the species diversity after ecological water transfer was higher than that before ecological water transfer,and the species diversity in downstream areas was less affected by ecological water transfer;in the similarity characteristics,the variation trends of Jaccard index and Sorenson index in different regions were similar;in the structure and dynamic characteristics,the number of Populus euphratica communities in the upstream area was relatively large,and the number of individuals was inversely proportional to the height level.

关 键 词：林业生态环境 木垒胡杨林群落 Sorenson指数 Jaccard指数 失稳率 

分 类 号：S718.542[农业科学—林学] S792.11