文献类型：期刊文献

英文题名：Partial recovery of a tropical rain forest a half-century after clear-cut and selective logging

作者：Xu, Han[1] Li, Yide[1] Liu, Shirong[2] Zang, Runguo[2] He, Fangliang[3] Spence, John R.[3]

第一作者：许涵

通信作者：Liu, SR[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forest Ecol Environm & Protect, Beijing 100091, Peoples R China;[3]Univ Alberta, Dept Renewable Resources, Edmonton, AB T6R 2H1, Canada

年份：2015

卷号：52

期号：4

起止页码：1044-1052

外文期刊名：JOURNAL OF APPLIED ECOLOGY

收录：;Scopus(收录号：2-s2.0-84948719848);WOS:【SCI-EXPANDED(收录号:WOS:000358004300027)】；

基金：The authors are grateful to Robin Chazdon for her constructive comments and revision on the manuscript. The authors thank Mingxian Lin, Jianhui Wu, Zhang Zhou, Tushou Luo, Dexiang Chen and Jinhua Mo for the logistic support and field assistance. This work was conducted during the visit of Han Xu to the University of Alberta. It was supported by National Nonprofit Institute Research Grant of CAF (CAFYBB2011004), Ministry of Science and Technology (2012BAD22B01), State Forestry Administration of China (201104057), National Natural Science Foundation of China (41201192, 31290223), the China Institute of the University of Alberta and the NSERC (Canada).

语种：英文

外文关键词：Tropical forest; forest structure; landscape scale; rare species; regenerated forests; selective harvest; clear-cutting; species composition; species richness; succession

摘要：The extent to which tropical rain forests recover tree species richness, composition and community structure after clear-cutting or selective harvest is controversial. Thus, the conservation value of forests regenerated after harvest remains unclear, but critically important for biodiversity. We sampled trees from 164 25x25m quadrats across a 160-km(2) tropical rain forest landscape on Hainan Island, China, which had been clear-cut or selectively harvested and left to recover without management for up to 50years. Species richness and species abundance distributions were compared among five successional categories to investigate changes in species richness and species abundance over time. Basal areas and three different species similarity indices were compared to reveal temporal changes in species composition and community structure. Species richness recovered faster than species composition and structure in both selectively logged and clear-cut forests. Both total number of species and number of rare species tended to increase from younger harvested forests through older harvested forests to old-growth intact forests. Within 20-40years after harvest species composition of harvested forests tended towards that of old-growth forests, community similarity between harvested and old-growth forests decreased subsequently and basal area did not recover, given even a half-century of succession undisturbed by anthropogenic forces. Shortly after harvest, pioneer species increased rapidly, but shade-tolerant species required much more time to recover to former abundances. The shift from pioneer species to shade-tolerant species indicates significant recovery of logged forests. Selectively logged forests recovered more quickly and had higher conservation values than clear-cut forests.Synthesis and applications. Our findings indicate that logged tropical forests only partially recovered the characteristics of pre-harvest, primary forest after a half-century of succession. Recovery of the original tree biodiversity on such post-harvest landscapes will be slow at best, if measured by species composition or stand structure. Our study amplifies the importance of conserving tropical forest integrity and developing harvest and management approaches that facilitate full recovery of logged tropical forests. Our findings indicate that logged tropical forests only partially recovered the characteristics of pre-harvest, primary forest after a half-century of succession. Recovery of the original tree biodiversity on such post-harvest landscapes will be slow at best, if measured by species composition or stand structure. Our study amplifies the importance of conserving tropical forest integrity and developing harvest and management approaches that facilitate full recovery of logged tropical forests.