清华校园春季野生草本地被植物多样性与群落分类

Plant Diversity of Wild Herbaceous Ground Covers at Tsinghua University Campus and Community Classification

为了提高校园春季野生草本地被植物应用的科学性,以清华校园的野生草本地被植物为调查对象,进行春季野生草本地被植物生物多样性的统计及群落分类研究。结果表明:清华校园春季野生草本地被植物共22科48属54种;物种丰富度方面,表现为随着时间变化植物种类数量递增,呈现正相关,且全光环境>半荫条件>全荫条件,Simpson指数、Shannon-Wiener指数、Pielou均匀度指数均呈现出基本相同趋势;利用TWINSPAN将清华校园野生草本植被划分为8个群丛:夏至草群丛、打碗花+夏至草+救荒野豌豆群丛、抱茎苦买菜群丛、蒿子秆群丛、紫花地丁+附地菜+抱茎苦买菜群丛、二月兰+蛇莓群丛、紫花地丁群丛、紫花苜蓿群丛。

A survey on biological diversity of wild herbaceous ground cover plants at Tsinghua University Campus in spring was conducted in order to provide reference for reasonable use of herbaceous ground covers. Different community groups of wild herbaceous ground cover plants were classified. A total of 54 species of herbaceous ground covers were recorded at Tsing-hua University Campus, which belong to 48 genus and 22 families. The species abundance increased due to the increasing plant species over time, and all-optical environment exhibited the highest species abundance followed by semi-shade conditions and full-shade conditions. Simpson index, Shannon-Wiener index and Pielou evenness index also showed the same trend. The wild herbaceous ground cover plants at Tsinghua University Campus can be divided into eight groups by TWINSPAN ：groups of whitetlower lagopsis herb, hedge glorybind＋whiteflower lagopsis herb＋common vetch, sowthistle leaf ixeris, garland chrysanthemum, Tokyo violet herb＋pedunculate trigonotis herb＋sowthistle leaf ixeris, violet orychopragmus＋ India mockstrawberrv. Tokyo violet herb, and Lucerne.