拉萨河流域墨竹工卡冲积扇植物多样性调查研究  

Investigation on the Plant Diversity of Alluvial Fan in Lasa River Basin Ink bamboo Worker Card

作　　者：王净杰 朱建航 韩明宇 李小熊 万丹[1] 李宏伟 WANG Jingjie;ZHU Jianhang;HAN Mingyu;LI Xiaoxiong;WAN Dan;Li Hongwei(School of Resources and Environment,Xizang Agriculture and Animal Husbandry University,Linzhi Xizang,860000,China;Xizang Huadian,Lasa,Xizang,850000,China)

机构地区：[1]西藏农牧学院资源与环境学院,西藏林芝860000 [2]西藏华电,西藏拉萨850000

出　　处：《高原农业》2024年第6期643-650,共8页Journal of Plateau Agriculture

基　　金：西南高山峡谷区水土流失综合防治技术与示范(2022YFF12900);西藏华电拉萨墨竹工卡扎雪100MW牧光互补光伏发电项目(20230506)。

摘　　要：本研究旨在揭示拉萨河流域中游区冲积扇的植物群落组成和稳定性规律。选用典型样方法在该区域开展群落调查,利用8个灌丛样方和72个草本层样方分析其物种组成和物种多样性等植被数量特征。结果说明:(1)冲积扇共有灌木植物3科6属7种,草本植物15科28属31种,灌木植物以蔷薇科居多,占总数的占总科数的71.43%,共计有4属5种,草本植物以菊科(25.81%)、豆科(9.68%),禾本科(9.68%),蔷薇科(9.68%)最多。(2)在所有样地中S6的灌草植物多样性最高,灌草植物的丰富度在样点S1最低分别为0.2627和1.512。(3)通过灌草植物多样性相关性分析发现海拔是影响植物生长的主要环境因子。(4)通过分析灌草植物群落稳定性发现,进一步得出灌丛与草本植物群落处于极度不稳定的状态。这可为研究区生态系统植被恢复提供重要基础数据。This experiment was to reveal the plant community composition and stability of alluvial fan in the middle reaches of Lasa River Basin.Forty-eight crossed-bred the species composition and species diversity of 15 shrub quadrats and 45 herbaceous quadrats were analyzed.The results showed:(1)There were 7 species of shrub plants in 3 families,6 genera,and 31 species of herbaceous plants in 15 families,28 genera,and 31 species of herbaceous plants.The majority of shrub plants were Rosaceae,accounting for 71.43%of the total number of families,with a total of 4 genera and 5 species.The most herbaceous plants were Compositae(25.81%),legumes(9.68%),gramineae(9.68%)and Rosaceae(9.68%).(2)The diversity of shrub plants in S6 was the highest among all plots,and the richness of shrub plants in S1 was the lowest at 0.2627 and 1.512,respectively.(3)Through the correlation analysis of shrub plant diversity,it was found that elevation was the main environmental factor affecting plant growth.(4)Through the analysis of the stability of the shrub plant community,it is further concluded that the shrub and herb community were in an extremely unstable state.This could provide important basic data for ecosystem vegetation restoration in the study area.

关 键 词：冲积扇 植物多样性 相关性分析 群落稳定性 

分 类 号：S157[农业科学—土壤学]