期刊论文

中文

中国农学通报

1000-6850

2012

28

11

295-300

10.3969/j.issn.1000-6850.2012.11.058

湖南省自然科学基金项目“城市森林减缓城市热岛效应的机理研究”（09JJ3031）；

本校为第一机构

为了缓解长沙热岛效应的技术措施的制定,利用调查试验等基本数据,对长沙市热岛形成原因进行分析。结果表明:长沙城市热岛强度随建城区面积的扩大而加强,热岛效应影响的范围和向外扩展的趋势与城市建城区的轮廓及城市向外发展的趋势相一致;长沙城区内部结构特征和下垫面的热性质为城市热岛的形成奠定了基础;城区人为热源增加,增加了城区大气中的热量,促进城市热岛形成;排放的大气污染物和粉尘烟尘,若以"尘罩"或"气罩"的形式覆盖在长沙城区的低空层,阻挡城区地面长波辐射的散发,反过来增加大气对地面的长波辐射,有利热岛形成;长沙城市热岛一般出现在晴朗、无风(或微风),大气层结稳定,空气湍流运动...

In order to develop the technical measures to alleviate the heat island effects in Changsha City,data set collected with method of test and investigation was analyzed the causes of heat island effects in urban area of Changsha City.The results showed that：urban heat island effect intensity was enhanced with the construction of the expansion of urban areas,and the scope and expansion trend of heat island effect was consistent with construction and development of urban areas;internal structure within the urban and urban surface characteristics o...