Lu Yang, Ranjitkar Sailesh, Harrison Rhett D, Xu Jianchu, Ou Xiaokun, Ma Xuelan, He Jun
Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, China.
University of Chinese Academy of Sciences, Beijing, China.
PLoS One. 2017 Jan 19;12(1):e0170418. doi: 10.1371/journal.pone.0170418. eCollection 2017.
The use of native species in forest restoration has been increasingly recognized as an effective means of restoring ecosystem functions and biodiversity to degraded areas across the world. However, successful selection of species adapted to local conditions requires specific knowledge which is often lacking, especially in developing countries. In order to scale up forest restoration, experimental data on the responses of native species to propagation and restoration treatments across a range of local conditions are required. In this study, the restoration potential of 34 native tree species was evaluated based on nursery research and field planting experiments at a highly degraded site in a subtropical area of southwest China. We examined species performance in terms of germination rates as well as survival rates and growth over 2 years after planting. Of the 34 species examined, 25 had a germination percentage greater than 50%. Survivorship ranged from 0 to 97% across species and was greater than 50% for 20 species. Mean monthly growth increments varied between species. Pioneer species performed well, and 14 mid- and late-successional species performed reasonably well to very well in this study. However, the remaining 16 mid- and late-successional species performed poorly. These results indicate that carefully selected mid- and late-successional species can be effectively incorporated into mixed species plantings. This data can be used to inform restoration planning, helping to identify suitable species and so enhance the biodiversity and resilience of restored forests.
在世界各地，利用本地物种进行森林恢复已日益被视为恢复退化地区生态系统功能和生物多样性的有效手段。然而，成功选择适应当地条件的物种需要特定的知识，而这种知识往往匮乏，尤其是在发展中国家。为了扩大森林恢复规模，需要有关本地物种在一系列当地条件下对繁殖和恢复处理反应的实验数据。在本研究中，基于在中国西南部亚热带一个高度退化地点的苗圃研究和实地种植实验，对34种本地树种的恢复潜力进行了评估。我们从发芽率、种植后两年的存活率和生长情况方面考察了物种表现。在所考察的34个物种中，25个物种的发芽率高于50%。不同物种的存活率在0%至97%之间，20个物种的存活率高于50%。不同物种的月平均生长增量各不相同。先锋物种表现良好，14个演替中期和后期物种在本研究中的表现相当好至非常好。然而，其余16个演替中期和后期物种表现不佳。这些结果表明，精心挑选的演替中期和后期物种可以有效地纳入混交种植中。这些数据可用于为恢复规划提供信息，有助于确定合适的物种，从而增强恢复森林的生物多样性和恢复力。
