老龄杉木人工林林下植被组成与多样性特征  

Composition and Diversity of Understory Vegetation of 50 Years Old Chinese Fir Plantation

作　　者：蒋宗垲[1] 籍烨 刘雨晖 陈辉[1] 沈宝贵[1] 苏素霞[1] 李丽红[1] 陈德叶[1] 沈彩霞 刘小飞[2] JIANG Zongkai;JI Ye;LIU Yuhui;CHEN Hui;SHEN Baogui;SU Suxia;LI Lihong;CHEN Deye;SHEN Caixia;LIU Xiaofei(Xinkou Teaching Forest Farm of Fujian Agriculture and Forestry University,Sanming 365002,Fujian,China;School of Geographical Sciences,Fujian Normal University,Fuzhou 350007,China;Management station of Castanopsis kawakami Hayata nature reserve,Xinkou,Sanming 365002,Fujian,China)

机构地区：[1]福建农林大学莘口教学林场,福建三明365002 [2]福建师范大学地理科学学院,福州350007 [3]福建三明莘口格氏栲自然保护区管理站,福建三明365002

出　　处：《亚热带资源与环境学报》2020年第3期32-38,共7页Journal of Subtropical Resources and Environment

基　　金：国家自然科学基金资助项目(31870601、31500407)。

摘　　要：杉木是中国南方主要的人工造林树种,其林下植被在维持杉木人工林土壤养分循环、水土保持方面起着重要作用。本研究采用样方调查法对杉木中心产区福建三明的50年生杉木人工林多样性进行调查,并分析了不同坡位林下植被组成与多样性特征。结果表明:50年生杉木林共有154种林下植物,分别隶属于76科117属;群落生活谱型以小高芽和中小型叶片植物为主;下坡位林下植被比上、中坡位分布更均匀,多样性指数更高。老龄杉木人工林的这种林下植被分布格局和多样性特征与本区温暖湿润的中亚热带气候相适应。Cunninghammia lanceolata(Chinese fir)is one of the main plantation species in south China.Undergrowth vegetation plays a key role in maintaining soil nutrient circulation and water and soil conservation in C.lanceolata plantation.This study investigated the diversity of 50 years old C.lanceolata plantation in Sanming,Fujian,China,and analyzed the composition and diversity of undergrowth vegetation in different slope positions.The results showed that there were 154 undergrowth plants belonging to 76 families and 117 genera;the community life spectrum was dominated by small high-bud and small and medium-sized leaf plants;the distribution of undergrowth vegetation down slope was more uniform and the diversity index was higher than that of the upper and middle slopes.It is clear that the distribution pattern and diversity of undergrowth vegetation in the old C.lanceolata plantation were adapted to the warm and humid subtropical climate in the region.

关 键 词：老龄杉木林 不同坡位 生活谱型 物种多样性 

分 类 号：Q949.4[生物学—植物学]