【摘要】 <正> 本文报道在滇西盈江县羯洋河谷发现的娑罗双林,到目前为止是我国少有的热带单优森林群落之一。这一发现不仅丰富了我国热带植被类型的资料,而且对研究我国与邻国植被之关系具有重大意义;同时也增添国产龙脑香科植物种类和热区之造林树种。 娑罗双树景颇语叫“行林坤”,系龙脑香料(Dipterocarpaceae)娑罗双属(Shorea)更多还原

【Abstract】 The Shorea forest, which had been found in western Yunnan, is one of the tropical consociations in China. It distributes in shade-moist gutter below alt. 600m in Jie-Yang valley of Ying-Jiang county about N24°40’, E97°34’. The annual mean temperature is more than 22℃ there, and The annual precipitation is over 2800mm.There are some essential characters in this community, such as, the tropical floristic components occupy 94%; the big trees of the upper layer are dominant by the Shorea assamica, which belongs to Dipterocarpaceae, and are mixid by Dipterocarpus pilosus, D. turbinatus, Taraktogeros kurzii Hydrocarpus alpine(Flacourtraceae) and Ficus glomerata var. chittagonga (Moraceae), Saraca griffithiana (Caesalpinaceae ) , etc., their highness reach about 40m; the physiognomy appears evergreen; the species of lower layer are various, among them the individual numbers of Arenga pinnata(Palmae) are the most; the lianoid plants are abundant; there are also many plants possessing buttresses, cauliflorys, etc.The store up total of this community reach more than 800m3/ha, among them, shorea occupies 57.2%. According to the diameter breast high over 41 cm, the numbers of the big trees of Shorea assamica are the most dominant The center of distribution of this species occurs in the north-east low-heat regions of India and Burma The community that is dominant by this species is a tropical semievergreen rain forest-seasonal rain forest. It may be considered the north-east limit type of the zonal vegetation of northern Burma.更多还原