森林群落生物多样性维持机制研究  

Research Progress in biodiversity maintenance mechanism in forest communities

作　　者：刘延坤 张鹤东 汪洪明 戚福坤 何萍 田松岩 Liu Yankun;Zhang Hedong;Wang Hongming;Qi Fukun;He Ping;Tian Songyan(Key Laboratory of Forest Ecology and Forestry Ecological Engineering,Heilongjiang Ecology Institute,Harbin 150081,Heilongjiang;Heilongjiang Mudanjiang Forest Ecosystem Research Station,Mudanjiang 157500)

机构地区：[1]黑龙江省生态研究所森林生态与林业生态工程重点实验室,哈尔滨150081 [2]黑龙江牡丹江森林生态系统国家定位观测研究站,黑龙江牡丹江157500

出　　处：《中国林副特产》2024年第3期73-75,共3页Forest By-product and Speciality in China

基　　金：黑龙江省省属科研院所科研业务费项目(CZKYF2021-2-C006);黑龙江省重点研发项目(GA21C030)。

摘　　要：森林群落幼苗更新生态学过程及驱动力是影响群落构建、演替以及生物多样性维持机制研究的核心科学问题。各个树种由于生活史策略存在差异,导致生物与非生物因子对其影响也存在不同,生物与非生物影响因子对幼苗存活生态过程的正负反馈机制(密度制约、生境过滤)尚有诸多争议和不确定性,二者在幼苗阶段中的相对重要性依然是目前最为复杂的研究主题。对森林群落木本植物幼苗更新过程中的两个重要的生态学假说——负密度制约、生境过滤作用对幼苗存活的影响进行了分析,并探讨了两种作用在幼苗更新过程中的相对重要性,基于幼苗更新动态及其生态学过程的研究现状对未来研究进行了展望。The ecological processes and driving forces of seedling regeneration in forest communities are key scientific issues affecting community construction,succession and biodiversity maintenance.Because of differences in life history strategies between various tree species,biotic and abiotic factors also have different effects on them.The positive and negative feedback mechanisms(density restriction,habitat filtration)of biological and abiotic factors on seedling survival are still controversial and uncertain.The relative importance of density restriction and habitat filtration in the seedling stage remains the most complex research topic.In this paper,the effects of negative density restriction and habitat filtration on seedling survival of woody plants in forest community were analyzed.The relative importance of these two effects in seedling regeneration was also discussed.Based on the research status of seedling regeneration dynamics and its ecological process,the future research was prospected.

关 键 词：幼苗更新 负密度制约 生境过滤 

分 类 号：S718.5[农业科学—林学]