2026年10月18日 星期日
新疆额敏县不同生境新疆野苹果林稳定性差异及评价
Stability differences and evaluation of Malus sieversii forests in different habitats of Emin County of Xinjiang
2026年 第35卷 第5期 页码[26-33]    下载全文[0.9MB]  

摘要

 为探究新疆额敏县境内不同生境新疆野苹果〔Malus sieversii (Lebed.) Roem.〕林的群落特性、生存现状及稳定性,对10个代表性生境中新疆野苹果林的种群更新潜力、物种多样性、土壤肥力、林地生产力和外界干扰等特征指标进行研究,并运用加权隶属函数值法综合评价各生境的林分稳定性。结果表明:新疆额敏县新疆野苹果林的种群更新潜力除北坡上坡中等以外,其他生境均良好。不同生境中,乔木、灌木、草本的物种丰富度指数无显著差异,同一坡位乔木和灌木的Simpson指数、Shannon-Wiener指数、Pielou指数在南坡总体高于北坡;草本的Simpson指数在北坡脊部显著(P<0.05)低于其他生境,除北坡脊部和北坡上坡外,其他生境间的Shannon-Wiener指数和Pielou指数差异大多不显著。同一坡位,南坡的土壤全氮、全磷和有机质含量以及乔木和草本的生物量总体高于北坡,而灌木生物量在北坡总体高于南坡。各生境群落稳定性排序由高至低依次为南坡下坡、北坡谷底、南坡谷底、南坡中坡、南坡上坡、北坡下坡、北坡上坡、南坡脊部、北坡脊部、北坡中坡。综合研究结果表明:在今后新疆野苹果林经营中应分梯度进行差异化管理,重点保护南坡下坡、北坡谷底,减少人为干扰;持续关注南坡谷底,通过光照调控完善群落结构;重点修复北坡中坡、北坡脊部、南坡脊部,通过人工补植、水土改良促进种群更新,增强土壤肥力;其他生境开展常态化监测管护。

 

Abstract

To investigate the community characteristics, survival status, and stability of Malus sieversii (Lebed.) Roem. forests in different habitats of Emin County of Xinjiang, the characteristic indexes including population regeneration potential, species diversity, soil fertility, forest productivity, and external disturbance of M. sieversii forests in ten representative habitats were studied, and the forest stability of each habitat was comprehensively evaluated by using the weighted membership function value method. The results show that the population regeneration potential of M. sieversii forests of Emin County of Xinjiang is favorable except for the upper northern slope, which is moderate. Among different habitats, there are no significant differences in species richness index of trees, shrubs, and herbs, and the Simpson index, Shannon-Wiener index, and Pielou index of trees and shrubs at the same slope position are generally higher on the southern slope than on the northern slope; the Simpson index of herbs on the northern slope ridge is significantly (P<0.05) lower than that in the other habitats, and except for the northern slope ridge and upper northern slope, the differences in Shannon-Wiener index and Pielou index among the other habitats are mostly non-significant. At the same slope position, the soil total nitrogen, total phosphorus, and organic matter contents, as well as the biomass of trees and herbs, are generally higher on the southern slope than on the northern slope, while the shrub biomass is generally higher on the northern slope than on the southern slope. The community stability ranking of each habitat from high to low is lower southern slope, valley on northern slope, valley on southern slope, middle southern slope, upper southern slope, lower northern slope, upper northern slope, southern slope ridge, northern slope ridge, and middle northern slope. The comprehensive research result indicates that in future management of M. sieversii forests, differentiated management should be implemented according to gradients, lower southern slope and valley on northern slope should be prioritized for protection, and human disturbance should be reduced; continuous attention should be paid to the valley on southern slope, and community structure should be improved through light regulation; middle northern slope, northern slope ridge, and southern slope ridge should be prioritized for restoration, with artificial replanting and soil-water improvement to promote population regeneration and enhance soil fertility; routine monitoring and management should be carried out in the other habitats.

关键词新疆野苹果林; 群落稳定性; 生境差异; 种群更新潜力; 土壤肥力; 林地生产力
Key wordsMalus sieversii (Lebed.) Roem. forest; community stability; habitat difference; population regeneration potential; soil fertility; forest productivity
作者马春花, 叶尔江·拜克吐尔汉, 张丽娟
所在单位新疆农业大学林学与风景园林学院, 新疆 乌鲁木齐 830052
点击量211
下载次数266
基金项目新疆维吾尔自治区林业改革发展资金项目(新林规字〔2025〕26号)