摘要
分析比较了哀牢山西坡季风常绿阔叶林和湿性常绿阔叶林中木质藤本的物种组成与分布特征。在两类常绿阔叶林中各设置了10个20m×20m的样地,调查记录所有dbh≥0.2cm和高度≥2m木质藤本的种类、胸径和攀援类型。在季风常绿阔叶林中,共记录到木质藤本115株隶属于14科17属18种,湿性常绿阔叶林中有55株隶属于10科12属15种。季风常绿阔叶林中的木质藤本的物种丰富度、多度、Shannon和Simpson多样性指数显著高于湿性常绿阔叶林(p<0.05),基面积的差异则不显著。木质藤本物种最丰富的科是菝葜科(Smilacaceae,4种)、蔷薇科(Rosaceae,3种)、蝶形花科(Papilionaceae,3种)和葡萄科(Vitaceae,3种),物种组成上在季风常绿阔叶林和湿性常绿阔叶林中完全不同。径级分布上,两类常绿阔叶林中的木质藤本均以小藤本(dbh<1.0cm)的个体占优势,中等大小(1.0cm<dbh<5.0cm)的木质藤本在湿性常绿阔叶林中分布较少。此外,两类常绿阔叶林中均以茎缠绕类型木质藤本的种类为主,季风常绿阔叶林中以茎缠绕类型的藤本个体占优势,而湿性常绿阔叶林中则以根攀援类型的藤本个体为主。
This study compared the diversity and species composition of lianas between the monsoon evergreen broad-leaved forest (MEF) and the moist evergreen broad-leaved forest (WEF) on western slope of Ailao Mountains,SW China. Ten 20 m×20 m sampling plots were established in each of the forests,and those lianas of ≥2 m in length (from the roots) and ≥0.2 cm diameter at breast height (dbh) were enumerated,by recording their species,dbh and climbing types. In MEF,there are 115 individual lianas,representing 18 species in 17 genera and 14 families,while it is 55 individuals,representing 15 species in 12 genera and 10 families,in WEF. Mean species richness,abundance,the Shannon and Simpson index were significantly higher in MEF than in WEF (p<0.05),whereas basal area doesn’t differ significantly between the two forests. The most species-rich (containing three or more species) family was Smilacaceae,Rosaceae,Papilionaceae and Vitaceae. However,the species composition differed completely in the two studied forests. Small lianas (dbh> 1.0 cm) dominated in both forests,while intermediate lianas (1.0 cm <dbh< 5.0 cm) are sparse in WEF. In the studied forests,stem twining species are predominant. The MEF,however,is dominated by stem twiners in terms of the number of individuals,while the WEF has mostly root climbers.
出处
《山地学报》
CSCD
北大核心
2010年第6期687-694,共8页
Mountain Research
基金
中国科学院知识创新工程重要方向项目(KSCX2-YW-N-066-03)
国家自然科学基金项目(30870437)
中国科学院“百人计划”项目(BRJH2002098)~~
