Effect of thinning intensity on understory herbaceous diversity and biomass in mixed coniferous and broad-leaved forests of Changbai Mountain

作     者：Gerong Wang Yue Sun Mo Zhou Naiqian Guan Yuwen Wang Runhua Jiang Zhiyu Liu Mengjia Wu Fucai Xia Gerong Wang;Yue Sun;Mo Zhou;Naiqian Guan;Yuwen Wang;Runhua Jiang;Zhiyu Liu;Mengjia Wu;Fucai Xia

作者机构：Key Laboratory of State Forestry Administration on Conservation and Efficient Utilization of Precious and Rare Forest Resource in Changbai MountainForestry CollegeBeihua University132013 JilinChina West Campus of Hebei Agricultural University2596 Lekai South StreetLianchi District071000 BaodingChina 

出 版 物：《Forest Ecosystems》 (森林生态系统（英文版）)

年 卷 期：2021年第8卷第4期

页      面：713-725页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：financially supported by a grant from the National Key Research and Development Program of China(2017YFC0504102) the Science and Technology Program of Jilin Provincial Education Department(JJKH20180349KJ) 

主　　题：Selective thinning Mixed coniferous and broad-leaved forests Herbaceous plants Diversity Biomass 

摘      要：Background:Herbs are an important part of the forest ecosystem,and their diversity and biomass can reflect the restoration of vegetation after forest thinning *** on the near-mature secondary coniferous and broad-leaved mixed forest in Jilin Province Forestry Experimental Zone,this study analyzed seasonal changes of species diversity and biomass of the understory herb layer after different intensities of ***:The results showed that although the composition of herbaceous species and the ranking of importance values were affected by thinning intensity,they were mainly determined by seasonal *** the entire growing season,the species with the highest importance values in thinning treatments included Carex pilosa,Aegopodium alpestre,Meehania urticifolia,and Filipendula palmata,which dominated the herb layer of the coniferous and broad-leaved mixed *** number of species,Margalef index,Shannon-Wiener index and Simpson index all had their highest values in May,and gradually decreased with *** index was roughly inverted“Nthroughout the growing *** did not increase the species *** can promote the total biomass,above-and below-ground *** number of plants per unit area and coverage were related to the total biomass,above-and below-ground *** average height had a significantly positive correlation with herb biomass in May but not in ***,it exerted a significantly negative correlation with herb biomass in *** biomass in the same month increased with increasing thinning *** herb biomass,above-and below-ground biomass showed positive correlations with Shannon-Winner index,Simpson index and Pielou evenness index in ***:Thinning mainly changed the light environment in the forest,which would improve the plant diversity and biomass of herb layer in a short *** different thinning intensity had different effects on the diversity of understory