滇东南马关古林箐热带雨林望天树群落的研究

云南东南部马关县古林箐的望天树群落以龙脑香科植物望天树为乔木层优势种,无患子科植物番龙眼为亚优势种,外貌以常绿大、中高位芽植物组成为特征,林内板根和茎花现象普遍,层间木质藤本和维管附生植物丰富,属于一种热带季节性雨林群落类型。在植物区系组成上,该群落以樟科、番荔枝科、楝科、大戟科、桑科、无患子科、橄榄科、柿树科等为主要组成科,在重要值统计上,以大戟科、无患子科、柿树科、龙脑香科、番荔枝科、樟科、楝科、橄榄科、桑科等为较优势的科,与东南亚热带雨林很接近,故为东南亚热带雨林的北缘类型。

A study on Parashorea chinensis community of tropical rain forest in Gulinqing of Maguan County, SE Yunnan, China

The Parashorea chinensis forest in Gulinqing of Maguan County,southeastern Yunnan is dominated by Parashorea chinensis(Dipterocarpaceae)and Pometia tomentosa(Sapindaceae)and characterized by evergreen megaphanerophytes and mesophanerophytes,and abundant woody lianas and epiphytes.The forest is similar to the equatorial rain forest in tropical Asia on forest profile and physiognomy.Therefore,it is considered to be a type of tropical Asian rain forest.In floristic composition,the forest is dominated by the plant families Lauraceae,Annonaceae,Meliaceae,Euphorbiaceae,Moraceae,Sapindaceae,Burseraceae and Ebenaceae in species richness,while Euphorbiaceae,Sapindaceae,Ebenaceae,Dipterocarpaceae,Annonaceae,Lauraceae,Burseraceae and Moraceae in phytosociological importance.This suggests that the flora of the rain forest of Yunnan is of tropical nature with a strong tropical Asian affinity.It is a marginal type from north of mainland Southeast Asia of Indo-Malaysia rain forests.