南岭山地抗冰雪灾害常绿树种选择

Selection of native evergreen tree species to restore damaged forests after ice storm in Nanling Mountains

2008年1—2月发生在我国南方地区的冰雪灾害对南岭常绿阔叶林造成了巨大的破坏,同时也为抗冰雪灾害树种选择提供了良好的平台。为了选择适宜冰雪灾害受损南岭森林恢复树种,结合广东省杨东山十二度水省级自然保护区灾后实地调查数据,利用合理-满意度结合多维价值理论的评价方法,建立树种筛选评价模型,以树种的受损指数、重要值、萌条率和林下更新种丰度等可量化因子为指标,计算各树种的单因素满意度,通过加权法计算其合成合理-满意度,以此筛选出乔木树种甜槠(Castanopsis eyrei)、雷公青冈(Cyclobalanopsis hui)、小红栲(C.carlesii)和深山含笑(Michelia maudiae),灌木树种广东杜鹃(Rhododendron kwangtungense)、鹿角杜鹃(R.latoucheae)、溪畔杜鹃(R.rivulare)为适宜在南岭山地冰雪灾害后恢复的优良树种。研究结果可为南岭冰雪灾害灾后恢复重建提供科学参考,也可为亚热带地区应对极端气候事件提供技术储备。

In January-February 2008, southern China had been experienced freezing rain and snow disaster, which was so-called ice storm disaster. The ice storm disaster had caused great de- struction of evergreen broad-leaved forests in Nanling Mountains. However, the disaster also pro- vides a good chance for the selection of tree species for resisting ice storm disaster. In order to se- lect tree and shrub species suitable for restoration of forests damaged by the ice storm in 2008 the Yangdongshan Shierdushui provincial nature reserve of Guangdong Province was selected as a typical ice storm disaster area and four plots in the reserve were set to investigate tree species. Multi-value theory was employed to establish tree species tegrating the four quantitative factors involving damaged selection and evaluation model, with in- index, importance value, sprout propor- tion and abundance of seedlings. Based on the field survey data and the quantitative evaluation model, the single factor satisfaction of each tree species was calculated and the reasonable satis- faction degree was calculated by weighting method. On the basis of the estimated values, tree species Castanopsis eyrei, Cyclobalanopsis hui, Castanopsis carlesii and Michelia maudiae and shrub species Rhododendron kwangtungense, R. latoucheae and R. rivulare were screened as suit- able species for the restoration of degraded forests damaged by ice storm disaster in Nanling Mountains.