应用生态学报2017，Vol.28Issue(9)：2823-2830,8.DOI:10.13287/j.1001-9332.201709.012
城市森林群落结构特征的降温效应
Cooling effects of urban forest community structure
摘要
Abstract
In this study,the influence of community structure on the cooling effect of urban forest was studied in Changchun by field sampling.The results showed that the temperatures of urban forests with different canopy densities showed the same fluctuation trend with time.The temperature in urban forest was lower with higher canopy density.Community structure characteristics of urban forest affected the urban thermal environment.Among the structural indices used in this study,canopy density (CD),leaf area index (LAI) and tree height (H) had the most significant relationships with the cooling effect of urban forest,while stem density (SD),diameter at breast height (DBH)and base area (BA) had no significant influence on the thermal environment.CD and H were linearly correlated with the cooling intensity of urban forest,and cooling intensity increased by 0.5 ℃ for each 10％ increase of canopy density and 0.05 ℃ for each 10 cm increase of tree height.There was a positive nonlinear correlation between the LAI and the cooling intensity.Further,a reasonable threshold of LAI for the cooling function was found in the range of 0.23-2.3.When the LAI was in the range of threshold value,the cooling intensity increased rapidly with the increase of LAI.关键词
城市森林/群落结构/降温效应Key words
urban forest/community structure/cooling effect引用本文复制引用
唐泽,任志彬,郑海峰,何兴元..城市森林群落结构特征的降温效应[J].应用生态学报,2017,28(9):2823-2830,8.基金项目
本文由中国科学院重点部署项目(KFZD-SW-302-03)和中国科学院东北地理与农业生态研究所青年人才基金项目(DLSYQ13004)资助 （KFZD-SW-302-03）
This work was supported by the Key Project of Chinese Academy of Sciences (KFZD-SW-302-03) and the Foundation for Excellent Young Scholar of Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences (DLSYQ13004). （KFZD-SW-302-03）
