基于GIS技术的城市森林与热岛效应的分析  

Analysis of Urban Forests and Heat Island Effect Based on GIS

作　　者：应天玉[1] 李明泽[1] 范文义[1] 张新源[1] 

机构地区：[1]东北林业大学

出　　处：《东北林业大学学报》2010年第8期63-67,101,共6页Journal of Northeast Forestry University

基　　金：黑龙江省青年科学技术专项资金(QC05C66);黑龙江省自然科学基金(C200923);中央高校基本科研业务费专项资金(DL09BA04)

摘　　要：用遥感和地理信息系统的方法定量地获取哈尔滨市的热岛效应和绿地状况的空间信息,探讨哈尔滨市热力场空间格局影响因素和城市绿地缓解热岛效应的机制。结果表明:地表辐射温度随绿地覆盖率的增加而下降;绿地面积小于5hm2时,地表辐射温度在16～30℃间变动,此时绿地面积大小对地表辐射温度影响所占比重较小,辐射温度的主要决定因子为绿地覆盖率,如增加10%的绿地,辐射温度将降低2℃左右。当绿地面积大于5hm2时,绿地对地表辐射温度的改善大大提高,地表辐射温度呈明显下降趋势,此时地表辐射温度值由绿地面积与绿地覆盖率共同决定。This paper aims to capture the spatial information of the heat island and greenbelt by RS and GIS quantificationally, and elementary discusses the influencing factors on spatial pattern of thermo-field in Harbin and the mechanism of the urban greenbelt to lighten the heat island effect, thereby providing a basis for urban greening. Results show that the ground surface radiation temperature decreases with the increase of the greenbelt coverage. When the greenbelt coverage is lower than 5 hm^2, the temperature changes between 16 degrees C and 30 degrees C, and the greenbelt area has little influence on the ground surface radiation temperature and the determinant factor is the greenbelt coverage. For example, the temperature would decrease 2 degrees C if the greenbelt increased 10 percent. When the greenbelt area is more than 5 hm^2, the temperature tends to decrease evidently, but the determinants factors are the greenbelt area and its coverage.

关 键 词：热岛效应 遥感信息模型 城市森林 地理信息系统 

分 类 号：P463.221[天文地球—大气科学及气象学]