广东南岭国家级自然保护区浙江润楠群落冻害调查研究

Frostbite Investigation of Machilus chekiangensis Community in Nanling National Nature Reserve,Guangdong

2008年10月,对遭受年初特大冰冻灾害的广东南岭国家级自然保护区的浙江润楠(Machilus chekiangen-sis)群落的冻害受损情况进行调查分析。结果表明:在1 600 m2的样地内有73科119属169种维管束植物,其属可以划分为12个分布区类型和7个亚型。群落中植物包括优势种浙江润楠受冻害严重。用SAS 9.1软件对植物受冻害情况进行分析,发现群落中物种受冻害程度与其分布区类型几乎不相关,群落中乔木层、灌木层物种受冻害程度与其高度、年龄及地理位置有关,而草本层和层间植物受冻害程度与其高度和年龄均没有相关关系。

The freezing injury of Machilus chekiangensis community from heavy ice and snow,which nearly lasted for one month at the beginning of 2008,in Nanling National Nature Reserve,Guangdong Province was studied in October,2008.The results showed： 169 vascular species belonging to 119 genera,which could be divided into 12 distribution types and 7 sub-types,and 73 families were included in the investigated area.The plants including the dominant species,Machilus chekiangensis,were injured heavily.Using SAS 9.1 to analyze the frostbite,it was found that the frostbite was almost irrelevant to plant distribution types.The frostbite in the tree-layer and shrub-layer was related to their heights,ages and locations;while the frostbite in the herb-layer had no relation to their heights and ages.