金沙江干热河谷的资源植物及其生态特征

金沙江干热河谷是金沙江沿岸具有特殊景观的一类地区，其环境特点是热量高，水份含量低。金沙江干热河谷资源植物多样性及其生态与分布特点的初步研究表明，金沙江干热河谷有记载的资源植物为５８５种，占全部１００４种植物的５８．３％。将资源植物分为９类，其中以药用植物的种类最多，达３７７种，占全部资源植物的６４．４％。资源植物的生长型、生活型、叶型等生态成分反映出生态环境的干热特点，也为资源植物的进一步引种提供基础。

The plant resources and its ecological characteristics in dry-hot valley of Jinsha River

insha River is the upper reaches of Yanzhi River. The climate factors along the Jinsha River valley are very different from that in near areas . dry and hot are two main environmental characteristics. The climate and the vegetation in this area are somewhat like that of savanna, Total plants of 1004 species are recorded in which 585 species(58.3%of total species)are useful plants and 9 different usages can be classified.Their ecological characters including growth form,life form and leaf form reflected the features of dry-hot ecological characters,it will provide the basis for further introduction.