Evergreen broad-leaved forest in Eastern China: Its ecology and conservation and the importance of resprouting in forest restoration
Evergreen broad-leaved forest in Eastern China: Its ecology and conservation and the importance of resprouting in forest restoration
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DOI：
10.1016/j.foreco.2007.03.043
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发表时间：
2007-06
影响因子：
3.7
通讯作者：
Xihua Wang;M. Kent;Xiao-Feng Fang
中科院分区：
文献类型：
--
作者：
Xihua Wang;M. Kent;Xiao-Feng Fang
远东常绿阔叶林（EBLF）的生物地理学和生态学研究在历史上一直非常有限。本文对中国东部退化EBLF的主要植物群落类型和潜在环境梯度进行了研究，并探讨了再生作为森林砍伐后次生演替的关键机制的重要性。对199个10m×10m样地的物种组成进行了描述，并采用双向指标物种分析和典型对应分析排序法进行了分析。退化和成熟森林群落类型共鉴定出22种，而CCA表明，原始植被梯度与样地到成熟森林的距离有关，与海拔和坡度密切相关。次级梯度对应演替阶段和扰动。首先选取TWINSPAN类群中的10m×10m样地，然后选取1、20、43、60年森林代表性区域和成熟林区的20m×20m样地，研究再生和补种特征在森林更新中的作用。再生在许多常绿阔叶林乔灌木物种更新中的重要性得到了证明，这一过程与持久性生态位的概念有关。现存的残余森林应该得到保护，但森林恢复也是必不可少的，并且将受益于了解乔灌木再生的重要性，以及森林更新中的幼苗补充。需要进一步研究中国EBLF的种子库、发芽成功率以及种间和种内竞争，以协助成功的森林保护和管理。
Biogeographical and ecological research on the evergreen broad-leaved forests (EBLF) of the Far East, which have been reduced to remnant fragments over the historical period has, until now, been very limited. To inform forest conservation and management, this paper describes research into major plant community types and underlying environmental gradients of degraded EBLF in Eastern China and examines the importance of resprouting as a key mechanism in secondary succession following forest clearance. Species composition was described from 199 10m×10m plots and analysed using two-way indicator species analysis and canonical correspondence analysis ordination. Some 22 degraded and mature forest community types were identified, while CCA indicated that a primary vegetation gradient was related to distance of sample plot from mature forest, which was closely linked to altitude and slope. The secondary gradient corresponded to successional stage and disturbance. The roles of resprouting and reseeding characteristics in forest regeneration were researched firstly by 10m×10m plots from selected TWINSPAN groups and secondly by 20m×20m plots in representative areas of forest at 1, 20, 43 and 60 years and in an area of mature forest. The importance of resprouting in the regeneration of many EBLF tree and shrub species is demonstrated, a process linked to ideas of the persistence niche. Existing remnant forests should be conserved but forest restoration is also essential and will benefit from understanding of the importance of tree/shrub resprouting, as well as seedling recruitment in forest regeneration. Further work is required on seedbanks, germination success and both inter- and intra-specific competition within Chinese EBLF to assist with successful forest conservation and management.