城市绿地植被特征对表层土壤温湿度的影响  

The Effects of Vegetation Characteristics on Surface Soil Temperature and Humidity in Urban Green Spaces

作　　者：刘青[1] 杨露 黄英[1] 孙怡 唐淼 蔡娟娟 刘苑秋[1] LIU Qing;YANG Lu;HUANG Ying;SUN Yi;TANG Miao;CAI Juanjuan;LIU Yuanqiu(College of Landscape Architecture and Art,Jiangxi Agricultural University,Nanchang Jiangxi 330045,China)

机构地区：[1]江西农业大学园林与艺术学院,江西南昌330045

出　　处：《江西师范大学学报(自然科学版)》2025年第1期95-102,共8页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(32160401)资助项目。

摘　　要：该文以南昌市结构及环境条件较为复杂的红谷滩带状公园绿地以及结构相对简单、斑块特征明显的艾溪湖公园绿地作为研究对象,通过连续3 d的样地土壤温湿度实测以及样点地上空间特征指标测量量化获取研究数据.研究结果表明:1)不同的植被结构对土壤温度的降温作用存在差异,降温效果依次为乔木>乔灌>灌木>草;对土壤保湿作用效果依次为灌木>乔灌>乔木>草,但不同结构的早晚湿度增减存在差异;2)绿地土壤温湿度受斑块特性、植被结构特征、斑块的空间方位等的多重影响;主成分分析表明,对表层土壤温湿度产生主要影响的分别是林分环境特征(41.16%)、斑块特征(30.89%)和方位(12.48%);3)DSM模型与地统计学方法结合可以直观地反映场地土壤温湿度的空间分布,但其适宜性要考虑场地特征.Two sites in Nanchang are selected as the research objects that are the Honggutan Park belt green space,which has a complex structure and environment,and the Aixihu Park green space,which has a relatively simple structure and obvious patch characteristics.Data are obtained by measuring soil temperature,humidity,and spatial characteristic indexes for three consecutive days at the sample sites.The results show that there are differences in the cooling effect of different vegetation structures on soil temperature and the order of the cooling effect form high to low is trees>trees and shrubs>shrubs>grasses.And the order of the humidity effect on soil from high to low is shrubs>trees and shrubs>trees>grasses,but there are differences in the increase and decrease of humidity in the morning and evening of different structures.Green space soil temperature and humidity are multiply influenced by patch cha-racteristics,vegetation structural features.Principal component analysis shows that the main effects on soil surface temperature and humidity are attributable to environmental characteristics(41.16%),patch characteristics(30.89%),and orientation(12.48%).Combining a digital surface model with geostatistical methods can directly reflect the spatial distribution of soil temperature and humidity.However,the suitability of this approach depends on site characteristics.

关 键 词：城市绿地 表层土壤 温湿度 植被特征 

分 类 号：Q948.112[生物学—植物学]