摘要
城市绿地物种组成及多样性保护,对城市生态环境建设及维持其生态系统服务功能具有重要意义。文章对安康市公园、广场和附属绿地中8个代表性城市绿地的乔木物种进行调查,统计和分析了主要城市绿地的树种组成、重要值及多样性。结果表明:安康市城市绿地乔木共40科77属100种,以香樟、紫薇、桂花为优势树种,且具有较高的重要值;各城市绿地相似性系数为0.26~0.54;从调查样地看,以校园绿地(A6和A7)乔木物种多样性最高,安康大道(A8)则最低,其他居中;但从绿地类型看,Margalef丰富度指数为附属绿地(9.19)>公园绿地(7.15)>广场用地(6.24);Shannon-Wiener指数为公园绿地(3.24)>附属绿地(3.13)>广场用地(3.04);Simpson指数和Pielou均匀度指数均为公园绿地(0.79)>广场用地(0.78)>附属绿地(0.70)。
The species composition and diversity protection of urban green space are of great significance to the construction of urban ecological environment and the maintenance of its ecosystem services.The species of trees in 8 representative urban green spaces including parks,squares,and affiliated green spaces of Ankang city were investigated,and the composition,importance value,and diversity of tree species in main urban green spaces were statistically analyzed.The results showed that there were 100 species of trees belonging to 77 genera and 40 families in the urban green space of Ankang.Camphor,cracermyrtle,and osmanthus fragrans were the dominant species with high importance values.The similarity coefficient of the urban green space ranged from 0.26 to 0.54.According to the survey sites,the species diversity of trees was highest in campus green space(A6 and A7),lowest in Ankang Avenue(A8),and middle in other areas.However,in terms of green space types,the Margalef richness index was subordinate green space(9.19)>park green space(7.15)>square land(6.24).Shannon-wiener index was followed as park green space(3.24)>subordinate green space(3.13)>square land(3.04).Simpson index and Pielou evenness index were as follows:green space in the park(0.79)>square land(0.78)>subordinate green space(0.70).
作者
张淑兰
景张欣
王丽
王亚萍
韩勇
ZHANG Shulan;JING Zhangxin;WANG Li;WANG Yaping;HAN Yong(School of Tourism,Resources and Environment,Ankang University,Ankang 725000,China;Academician and Expert Workstation of Shaanxi Association for Science and Technology,Ankang University,Ankang 725000,China)
出处
《环境保护科学》
CAS
2023年第4期134-139,共6页
Environmental Protection Science
基金
陕西省科技厅青年项目(2021JQ-835)
安康市科技局的项目(AK2021-RK-07)
安康学院陕西省科协院士专家工作站项目(2021AYKFKT05)。
作者简介
张淑兰(1980-),女,博士、副教授。研究方向:森林生态学。E-mail:zhangshulan1980@163.com。
