冬季居住区不同功能绿地PM2.5浓度变化及其与气象因子的关系  

Winter PM2.5 Concentration Changes of Different Functional Green Spaces in the Residential Area and Their Correlations with Meteorological Factors

作　　者：王誉洁 黄天丽 孙丰宾[2] 何欢 齐锋[1] 晏海[1] 邵锋[1,4] WANG Yu-jie;HUANG Tian-li;SUN Feng-bin;HE Huan;QI Feng;YAN Hai;SHAO Feng(School of Landscape Architecture,Zhejiang Agriculture and Forestry University,Hangzhou 311300,Zhejiang,China;School of Agriculture,Heilongjiang Bayi Agricultural University,Daqing 163319,Heilongjiang,China;Hangzhou Lin an District Environmental Monitoring Station,Hangzhou 311300,Zhejiang,China;School of Landscape Architecture,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]浙江农林大学风景园林与建筑学院,浙江杭州311300 [2]黑龙江八一农垦大学农学院,黑龙江大庆163319 [3]杭州市临安区环境监测站,浙江杭州311300 [4]北京林业大学园林学院,北京100083

出　　处：《西北林学院学报》2019年第4期239-245,共7页Journal of Northwest Forestry University

基　　金：国家自然科学基金项目(51508515);浙江省大学生科技创新活动计划(2018R412044)

摘　　要：以杭州市临安区林水山居为研究对象,在2017年冬季采用实地测量法对居住区内3个不同功能绿地和对照点的PM 2.5 浓度、气象因子(温度、相对湿度、风速和光照强度)进行监测,评价绿地对居住区环境降低大气PM 2.5 浓度的作用,同时探讨环境因素对PM 2.5 浓度的影响。结果表明,居住区3个不同功能绿地和对照点的PM 2.5 浓度日变化趋势基本一致,呈“单峰单谷”型;PM 2.5 浓度均值从大到小依次是道路绿地>宅旁绿地>中心绿地>对照点。居住区的PM 2.5 浓度与温度呈负相关关系(R^2=0.794 6);与相对湿度呈正相关(R^2=0.642 5);与风速呈负相关;与光照强度呈负相关,可拟合为线性方程 y=95.3-4.7x,(0.05<P <0.1)。居住区内道路绿地应设计复层、郁闭度高的群落结构;宅旁绿地应以单一结构且郁闭度低的植物群落为主;在居住区边界设置复层植物群落结构的绿地,而内部宜采用通透、舒朗的群落结构。Taking the Linshuishanju Residential Area in Lin an District,Hangzhou as the research object,in the winter of 2017,the field measurement method was used to monitor the PM 2.5 concentration and meteorological factors (temperature,relative humidity,wind speed and light intensity)in three different functional green spaces and the control point.The effect of green space on reducing atmospheric PM 2.5 concentration in residential area was evaluated and the influence of environmental factors on PM 2.5 concentration was explored.The results showed that the daily variation trends of PM 2.5 concentration in three different functional green spaces and the control point were basically the same,showing “single peak and single valley” pattern;the order of PM 2.5 concentration from large to small was road green space>house green space>central green space>the control point.There was a negative correlation between PM 2.5 concentration and temperature (R^2=0.794 6),a positive correlation between PM 2.5 concentration and relative humidity (R^2= 0.642 5),a negative correlation between that and wind speed,and a negative correlation between that and light intensity,which could be fitted to a linear equation y=95.3-4.7x,(0.05<P <0.1).The road green space in the residential area should be designed with a multi-layered plant community of high crown density;the green space next to the house should be dominated by a single structure of low crown density.A greenbelt with a multi-layered plant community should be planted at the boundary of the residential area,while a low-density community structure should be used internally.

关 键 词：居住区绿地 PM2.5 植物群落 气象因子 相关性分析 Boltzmann曲线模型 

分 类 号：S731.5[农业科学—林学]