中国城市林业2025，Vol.23Issue(1)：37-45,9.DOI:10.12169/zgcsly.2024.12.16.0004
城市公园常见蔷薇科乔木冠层特征对林下降温效应差异及影响机制
Differences in Understorey Cooling Effect of Canopy Characteristics of Common Rosaceae Trees in Urban Parks and Its Impact Mechanism
摘要
Abstract
[Objective]The study is to explore the canopy characteristics of plant configuration in urban parks,such as scientific planting height and planting spacing,and their influences on understorey cooling effect.,which would provide data support to the follow-up planting plan optimization.[Method]This paper takes the common Rosaceae trees in Suzhou's urban parks as the research object.By employing a sampling survey approach,the investigation utilizes a plant canopy analyzer,altimeter,and laser rangefinder to analyze the different influences that their canopy structure,canopy efficiency and other characteristics have on understorey cooling,discuss the influence mechanism and explore the optimal value of canopy characteristic indexes for understorey cooling.[Result]The correlation of canopy structure indexes with the cooling effect is ordered as diffuse horizontal irradiance(DHI)>diameter at breast height(DBH)>tree height(TH)>canopy thickness(CTH)>canopy width(CW)>leaf area index(LAI);and the cooling effect is optimal when TH is at 6.8 m,CW at 3.3 m,CTH at 2.2 m,DBH at 0.27 m,LAI at 4,and DHI at 12.The correlation of the canopy efficiency index to the cooling effect is ranked as SIV>CSI>SIH>SIL,and the canopy efficiency index has the larger contribution to the total cooling effect than the canopy structure index.[Conclusion]In urban parks,the understorey cooling effect of Rosaceae trees is differentiated,and the optimal cooling effect is realized through the synergistic regulation of canopy structure parameters and canopy efficiency parameters.The physiological mechanism of enhancing latent heat with plants is mainly relied on to regulate the amount of heat.关键词
降温效应/冠层特征/林下降温/热环境Key words
cooling effect/canopy characteristics/understorey cooling/thermal environment引用本文复制引用
陈昕瑶,张兴,高飞..城市公园常见蔷薇科乔木冠层特征对林下降温效应差异及影响机制[J].中国城市林业,2025,23(1):37-45,9.基金项目
"十四五"江苏省重点学科建设项目(082240006/002/002) （082240006/002/002）
江苏省研究生工作站 （）
宿迁交通科研基金(2022Y11) （2022Y11）
国家自然科学基金青年基金(52008280) （52008280）
国家自然科学基金青年基金(52308029) （52308029）
黑龙江省科学院双提雁阵项目(STYZ2022ZR01) （STYZ2022ZR01）
黑龙江省博士后资助(LBH-Z23263) （LBH-Z23263）
