关键词: 气候变化, 生长, 叶片品质, 桑树

Abstract: 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 destruction of evergreen broad-leaved forests in Nanling Mountains. However, the disaster also provides a good chance for the selection of tree species for resisting ice storm disaster. In order to select 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 selection and evaluation model, with integrating the four quantitative factors involving damaged index, importance value, sprout proportion 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 satisfaction 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 suitable species for the restoration of degraded forests damaged by ice storm disaster in Nanling Mountains.

Key words: leaf quality, Morus alba, climate change, growth.