摘要
碗厂沟流域位于四川北部 ,有种子植物 84科、2 82属、5 5 6种。对该区种子植物区系研究表明 ,碗厂沟流域种子植物类型多样、地理成分复杂 ;碗厂沟流域种子植物区系中温带成分占总属数的 6 3 0 % ,各种热带成分占 34 7% ,具有明显的过渡地带性植被区系性质 ;与相邻地区种子植物区系比较表明 ,碗厂沟流域种子植物区系与太白山、神农架和金佛山具有较高的同质性 ,与鼎湖山则具明显差异。
Wanchanggou watershed is located in the north of Sichuan basin.There were 556 species of seed plant,which belonged to 282 genera,84 families.The largest family was Rosaceae,which contained 53 species.The 282 genera of seed plant,excluding 31 cosmopolitan genera and 5 genera endemic to china,could be grouped into 14 distribution types and 14 sub-distribution types as proposed by Wu Zheng-yi.Among them,there were 75 genera of North temperate types,there were 83 genera of else temperate types and there were 87 genera of the all tropical types,which accounted for 29.9%,33.1% and 34.7% of the total genera(not including cosmopolitan),respectively.It was clearly shown that the flora of Wanchanggou watershed had a strong transitional feature from subtropics to temperate.Compared with the neighbor area,the seed plant flora of Wanchanggon watershed had an upper homogeneity with that of Taibai Mountain,Shengnongjia Mountain,Jinfo Mountain,and it was very different from Dinghu Mountain.
出处
《四川林业科技》
2003年第1期12-18,共7页
Journal of Sichuan Forestry Science and Technology
基金
国家"十五"科技攻关项目<长江上游低山丘陵区水源涵养型植被建设技术研究与示范>和<嘉陵江上游低效人工林改造与坡面治理技术研究与示范>的部分内容。
关键词
碗厂沟流域
种子植物
植物区系
PCA排序
Wangchanggou Watershed of Sichuan Province,Seed Plants,Flora,PCA Ordination
