摘要
九寨沟自然保护区森林植物的数量分类杨远兵刘玉成方任吉（西南师范大学生命科学系，重庆６３０７１５）ＮｕｍｅｒｉｃａｌＣｌａｓｉｆｉｃａｔｉｏｎｏｆｔｈｅＦｏｒｅｓｔＶｅｇｅｔａｔｉｏｎｉｎｔｈｅＪｉｕｚｈａｉｇｏｕＮａｔｕｒｅＲｅｓｅｒｖｅ．ＹａｎｇＹ...
Chinese Journal of Ecology,1998,17(3):7-10.The hierarchical and agglomerative analysis was used to achieve numerical classification of the forest vegetation in the Jiuzhaigou Nature Reserve. The results obtained from the analysis of different distance coefficients and different clustring strategies indicated that there were eight formations of the forest vegetation in the nature reserve. The results of classification showed that the dominant plants belonged to the type of temperate zone distribution,mainly composed by Pinaceae ,Betulaceae and Fagaceae. Pinaceae was predominant vegetation, while faber forest was the widest distributed forest in Jiuzhaigou.The forest vegetation in this area also showed distinclly vertical distribution. It could be divided into needle -leaved and broad-leaf mixed forest zone and sub-alpine needleleaved forest zone from the low to the top in Jiuzhaigou. Finally, four commonlyused strategies were discussed and the group-average strategy was considered to be an ideal method for hierarchical and agglomerative clustering .
出处
《生态学杂志》
CAS
CSCD
北大核心
1998年第3期7-10,共4页
Chinese Journal of Ecology
基金
国家自然科学基金
关键词
森林
植物数量
分类
九寨沟
自然保护区
Jiuzhaigou nature reserve, forest vegetation, hierarchical and agglomerative clustering,group-average strategy.
