色季拉山长鞭红景天种群生境特征  

Habitat Characteristics of Rhodiola fastigiata Population in Sejila Mountain of Southeastern Tibet

作　　者：卢杰[1,2] 唐晓琴[1,2] 李连强[1,2] 兰小中[1,2] 

机构地区：[1]西藏大学农牧学院,西藏林芝860000 [2]西藏大学农牧学院-西南大学药用植物联合研发中心,重庆400715

出　　处：《西部林业科学》2016年第3期13-19,共7页Journal of West China Forestry Science

基　　金：西藏林芝森林生态系统定位研究(2012-LYPT-DW-016);第四次全国中药资源普查项目(20120716-540000);西藏特色农牧资源研发协同创新中心建设资助项目(2014-2015)

摘　　要：采用野外样地调查与监测法对西藏色季拉山长鞭红景天种群的生境进行研究分析发现,长鞭红景天种群生境主要为4个类型:急尖长苞冷杉林、方枝柏林、硬叶柳灌丛和鳞腺杜鹃灌丛。4个生境中,硬叶柳灌丛内有41种植物,急尖长苞冷杉林内有33种植物,方枝柏林内有29种植物,鳞腺杜鹃灌丛内仅有17种植物。不同生境群落中长鞭红景天种群数量特征各异,重要值排序为鳞腺杜鹃灌丛>方枝柏林>急尖长苞冷杉林>硬叶柳灌丛。4个生境群落中月平均气温排序为急尖长苞冷杉林>硬叶柳灌丛>方枝柏林>鳞腺杜鹃灌丛,平均湿度排序为鳞腺杜鹃灌丛>方枝柏林>硬叶柳灌丛>急尖长苞冷杉林,光照强度排序是急尖长苞冷杉林>硬叶柳灌丛>鳞腺杜鹃灌丛>方枝柏林。不同生境土壤温度排序为硬叶柳灌丛>方枝柏林>急尖长苞冷杉林>鳞腺杜鹃灌丛,而土壤湿度排序为硬叶柳灌丛>方枝柏林>鳞腺杜鹃灌丛>急尖长苞冷杉林。不同生境群落中空气温度、湿度、光照强度,土壤温度、湿度等存在较大差异,对长鞭红景天种群也有相应的影响,结合数据特征来看,鳞腺杜鹃灌丛是其最适生境。The habitat characteristics of Rhodiola fastigiata population in Sejila Mountain was studied by intensive field investigation and monitoring methods, and the Rresult showed that the habitat of R. fastigiata population could be divided into 4 types, namely Abies georgei var. smithii forest, Sabina saltuaria forest, Salix sclerophylla shrub and Rhododendron lepidotum shrub. Among these 4 habitats, there were 41 species in S. sclerophylla shrub, 33 species in A. georgei var. smithii forest, 29 species in S. saltuaria forest, and 17 species in R. lepidotum shrub. The quantitative characteristics of R. fastigiata population were various in different habitats, and the order of importance value was R. lepidotum shrub〉S, saltuaria forest〉A, georgei var. smithii forest〉S, sclerophyUa shrub. The order of monthly air temperature was A. georgei var. smithii forest 〉 S. sclerophylla shrub 〉 S. saltuaria forest 〉 R. lepidotum shrub. The order of air humidity was R. lepidotum shrub 〉 S. sclerophylla shrub 〉 S. saltuaria forest 〉 A. georgei var. smithii forest. The order of light intensity was A. georgei var. smithii forest〉S, sclerophylla shrub〉R, lepidotum shrub〉S, saltuaria forest. The the order of soil temperature was S. sclerophylla shrub〉S, saltuaria forest〉A, georgeivar. smithii forest 〉 R. lepidotum shrub, while the R. lepidotum shrub〉A, georgei var. smithii forest. Air soil moisture was S. sclerophylla shrub 〉 S. saltuaria forest 〉 temperature, humidity, light, soil temperature and humidity were different in these 4 habitats. According to quantitative analysis, R. lepidotum shrub was the most suitable habi- tat of R. fastigiata population.

关 键 词：长鞭红景天 色季拉山 急尖长苞冷杉林 方枝柏林 硬叶柳灌丛 鳞腺杜鹃灌丛 

分 类 号：S718.5[农业科学—林学]