城市风景游憩林对环境变化的缓解效应  

Mitigation effect of urban landscape recreation forest on environmental change

作　　者：刘艳 黄雅奇 陈婵 李巧云 宋胤 吴林世 廖菊阳 LIU Yan;HUANG Yaqi;CHEN Chan;LI Qiaoyun;SONG Yin;WU Linshi;LIAO Juyang(Hunan Botanical Garden,Changsha 410004,Hunan,China;National Positioning Observation and Research Station of Forest Ecosystem in Chang-Zhu-Tan Urban Agglomeration,Hunan Province,Changsha 410004,Hunan,China;National Forestry Grassland Rhododendron Engineering Technology Research Center,Changsha 410004,Hunan,China)

机构地区：[1]湖南省植物园,湖南长沙410004 [2]湖南长株潭城市群森林生态系统国家定位观测研究站,湖南长沙410004 [3]国家林业草原杜鹃工程技术研究中心,湖南长沙410004

出　　处：《湖南林业科技》2023年第6期30-36,共7页Hunan Forestry Science & Technology

基　　金：湖南省重点研发计划项目(2021NK2009);湖南省林业科技创新资金项目(XLK202105-4)。

摘　　要：于2021年7月以长株潭地区典型代表性观花树种杜鹃、樱花以及观叶树种枫香、马尾松、樟树为研究对象,分别在其风景游憩林内设置固定样地,监测林内的气温、相对湿度、负离子和空气颗粒物浓度,研究城市风景游憩林对环境变化的缓解效应。结果表明:杜鹃林、枫香林和樟树林内气温均表现为在建成区的最高,在近郊区和远郊区较低;在樱花林和樟树林内的相对湿度均随着其所在区域从市中心往城市边缘变化而呈现逐渐增加的趋势;在杜鹃林、樱花林和马尾松林内均以远郊区的负离子浓度最高,在近郊区和建成区的均相对较低;空气颗粒物浓度在杜鹃林、枫香林、马尾松林内均表现为在远郊区的空气颗粒物浓度比在近郊区和建成区的低,其颗粒物的浓度均呈现为PM_(10)的>PM_(2.5)的>PM 1的。气温、相对湿度、负离子浓度以及空气颗粒物浓度在城乡梯度间的差异均显著(P<0.01)。长株潭风景游憩林能够在一定程度上缓解城市化进程导致的环境变化。In July 2021,Rhododendron simsii,Cerasus yedoensis,Liquidambar formosana,Pinus massoniana and Cinnamomum camphora named as the typical representative tree species in Chang-zhu-tan region were selected to explore the mitigation effect of urban landscape recreation forest on environmental change,by setting fixed plots in their scenic and recreational forests to record the temperature,relative humidity,negative oxygen ion concentration and air particle concentration in the forest.The results showed that the temperature in R.simsii forest,L.formosana forest,P.massoniana forest and C.camphora forest was higher in the urban area,but lower in the suburban area and exurban area.The relative humidity in the C.yedoensis forest and C.camphora forest showed a gradually increasing trend as their location changes from the city center to the edge of the city.The concentration of negative oxygen ions in R.simsii forest,C.yedoensis forest and P.massoniana forest was the highest in the exurban area,and relatively lower in the suburbs and urban areas,and those in the L.formosana forest and C.camphora forest was relatively lower.in the exurban area.The concentration of airborne particulate matter in R.simsii forest,L.formosana forest and P.massoniana forest in the exurban area was lower than that in the suburbs and urban areas,and the concentration of its particulate matter was presented as PM_(10)>PM_(2.5)>PM 1.The differences in air temperature,relative humidity,negative oxygen ion content and air particulate matter content between urban and rural gradients were significant differences(P<0.01).The Chang-zhu-tan Scenic and Recreational Forest can alleviate the environmental changes caused by urbanization to a certain extent.

关 键 词：风景游憩林 气温 相对湿度 负离子 空气颗粒物 

分 类 号：S718.5[农业科学—林学]