德昌县城区绿地系统植物多样性  

Plant Diversity of Urban Green Space System in Dechang County

作　　者：刘雅琦 谭又铭 刘一丁 龚固堂[2] 李羽洁 谢川 赵银兵 陈俊华[2] Liu Yaqi;Tan Youming;Liu Yiding;Gong Gutang;Li Yujie;Xie Chuan;Zhao Yinbing;Chen Junhua(College of Tourism and Planning,Chengdu University of Technology,Chengdu 610059,China;Sichuan Academy of Forestry,Sichuan Key Laboratory of Ecological Restoration and Conservation for Forest and Wetland,Chengdu 610081,China;Dechang Forest and Grassland Resources Station,Dechang 615500,Sichuan,China;College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]成都理工大学旅游与城乡规划学院,成都610059 [2]四川省林业科学研究院森林与湿地生态恢复与保育四川重点实验室,成都610081 [3]德昌县森林和草原资源站,四川德昌615500 [4]成都理工大学地球科学学院,成都610059

出　　处：《中国城市林业》2022年第5期143-150,共8页Journal of Chinese Urban Forestry

基　　金：四川省林业科学研究院横向项目“德昌县国家森林城市建设总体规划”(川林研工咨202138)。

摘　　要：城市绿地系统对城市生态系统的建立、城市居住环境的创造及城市的可持续发展等具有重要的影响。文章利用高清卫星遥感影像(Pléiades)解译获得各类绿地面积及占比,通过实地调查和相关资料收集,对四川省德昌县城区绿地植物结构及多样性进行研究。结果表明:1)共记录到乔木37科68属88种,灌木29科42属70种,草本24科33属41种;乔木使用频度最高的是黄葛树,其次是小叶榕。2)各类绿地物种丰富度按大小排列为公共附属绿地>居住区附属绿地>公园绿地>街道附属绿地>防护绿地;各类绿地物种多样性以公共附属绿地最高,其次是居住区附属绿地,防护绿地最低。3)街道附属绿地中乔、灌、草Simpson生态优势度均最高,公共附属绿地最低;各类绿地中灌木层和草本层的Pielou均匀度指数相近,但乔木层差别较大,其中公共附属绿地的Pielou均匀度最大,其次是居住区附属绿地,防护绿地最小。由此可见,德昌县绿地植物丰富度和物种多样性较高,城市绿化比较注重市民生活、工作、学习环境的改善。因此,德昌县在今后的绿地系统或城市森林建设中,应注重增加地带性植被物种的种类和数量,以增加群落稳定性和多样性;同时应充分结合本地实际,凸显地域文化。Urban green space system has an important impact on the establishment of urban ecosystem,the creation of the urban living environment and the sustainable development of cities.The paper uses the high⁃definition satellite remote sensing image(Pléiades)to obtain the data on the area and proportion of various green spaces,and study the structure and diversity of plants in green spaces at the urban area of Dechang County,Sichuan Province,through field investigation and data collection.The results show:1)A total of 88 tree species are recorded in 68 genera of 37 families,70 shrub species in 42 genera of 29 families,and 41 herbaceous species in 33 genera of 24 families,while the most frequently planted trees are Ficus virens and F.concinna;2)The species richness of various green spaces is in the order of public auxiliary green space>residential green space>park green space>street auxiliary green space>protective green space;Among all kinds of green spaces,the species diversity is the highest in public auxiliary green space,followed by residential green space,and the lowest is protective green space;and 3)The Simpson ecological dominance index of trees,shrubs and grasses in the street auxiliary green space is the highest,while the lowest in the public auxiliary green space;the Pielou evenness index of shrubs and grasses in various green spaces is similar,but the index of the tree layer is quite different.Among them,the Pielou evenness index is largest for the public auxiliary green space,followed by the auxiliary green space in the residential area,while the protective green space has the smallest value.It can be seen that Dechang County has a high plant richness and species diversity in its green spaces,and urban greening put the focus on improving the living,working and learning environment of citizens.Therefore,Dechang County should increase the variety and quantity of zonal vegetation species to improve the stability and diversity of plant community and fully integrate the local reality to highlight the regional

关 键 词：绿地系统 植物多样性 城市生态系统 森林城市 四川德昌县 

分 类 号：Q948[生物学—植物学]