CAJ | 학술논문

文章以西藏林芝地区工布江达县境内的米拉山作为研究地点，采用双向指示种分析（TWINS?PAN）法、除趋势对应分析（DCA）法对米拉山东西坡10个海拔带的45个植物样方进行分析，同时对米拉山东坡与西坡的群落结构特征和转换后的物种丰富度（TSR）沿海拔梯度的变化格局进行了比较。TWIN?SPAN分类结果显示：米拉山东坡植被可分为6个群丛，与DCA排序结果不甚对应，西坡植物被分为8个群丛，与DCA排序结果基本一致。东西坡植物群落的垂直分布差异很大，东坡植被自然带较高，西坡植被自然带较低且植被类型复杂；东西坡TSR的海拔梯度格局也有很大差异，东坡高海拔带TSR最高，呈现出随海拔升高TSR升高的趋势，西坡高海拔带TSR最低，呈现出随海拔升高TSR降低的趋势。
문장이서장림지지구공포강체현경내적미랍산작위연구지점，채용쌍향지시충분석（TWINS?PAN）법、제추세대응분석（DCA）법대미랍산동서파10개해발대적45개식물양방진행분석，동시대미랍산동파여서파적군락결구특정화전환후적물충봉부도（TSR）연해발제도적변화격국진행료비교。TWIN?SPAN분류결과현시：미랍산동파식피가분위6개군총，여DCA배서결과불심대응，서파식물피분위8개군총，여DCA배서결과기본일치。동서파식물군락적수직분포차이흔대，동파식피자연대교고，서파식피자연대교저차식피류형복잡；동서파TSR적해발제도격국야유흔대차이，동파고해발대TSR최고，정현출수해발승고TSR승고적추세，서파고해발대TSR최저，정현출수해발승고TSR강저적추세。
The eastern and western slopes of Mila Hill as the study site, the plant community structure and the re?lationship between TSR (Transformed Species Richness) and altitude were studied, with 10 altitude bands and 45 sample plots, by using TWINSPAN (Two way indicator species analysis), DCA (Detrended correspondence analysis). TWINSPAN classification showed that 6 plant associations can be recognized in the eastern slope of Mila Hill and was not consistent with DCA ordination result well, and 8 plant associations can be recognized in the western slope of Mila Hill and was consistent with DCA ordination result. DCA ordination axis 1 and 2 im?plied that moisture and altitude were the main influential factor for vegetation composition and distribution in the study area. There were significant differences in plant community structure, distribution, and the changes in TSR with altitude between two slopes of Mila Hill. The plant community structure was more complex in the western slope than that of eastern slope. TSR was decreased with increasing in altitude in the western slope but an oppo?site situation found in the eastern slope.