Effects of urban morphology and wind conditions on land surface temperature in Changchun
Received date: 2018-08-27
Request revised date: 2019-02-27
Online published: 2019-05-24
Supported by
National Natural Science Foundation of China(41571150)
National Natural Science Foundation of China(41630749)
National Natural Science Foundation of China(41771178)
National Natural Science Foundation of China(41471140)
Program of Innovation Talents in Universities of Liaoning Province(LR2017017)
Copyright
The urban heat island effect has received an increasing attention recently with the acceleration of urbanization. However, so far few studies have focuses on the effects of urban morphology and wind conditions on land surface temperature (LST). This study utilizes a range of multi-source data including architecture and remote sensing and applies a GIS spatial method combined with urban building frontal area index (FAI) and LST. This research aims to evaluate spatiotemporal differences in the FAI of urban built-up areas as well as to explore the influence of urban form on surface temperature. Results initially reveal that building FAI conforms to a spatial trend comprising outward diffusion from the city center and shows that high density, higher elevation buildings hinder the wind strongly. Data show that FAI values for the north of Chaoyang District are the largest, reaching a maximum of 15.1, while those for edge areas for each district are the smallest, falling to a minimum of 0.01. Secondly, the results of this analysis reveal large differences in surface temperature between day and night within the study area, ranging between 18.15 ℃ and 31.73 ℃ and between 4.27 ℃ and 18.43 ℃, respectively. Spatial distribution values exhibit the same characteristics as those for the FAI; the urban central city is characterized by high temperature, which gradually spreads out in a concentric manner. The range of high temperature areas during the day is also larger than that at night as these values are influenced by other variables including urban architectural form and artificial heat sources. Thirdly, the data assembled here show that FAI is related to surface temperature to a certain extent; recorded correlations between day and night are 0.371 and 0.355, respectively, both significant at the 0.01 level. It is also the case that building spatial shape is distinct in both vertical and horizontal directions and that the influence of surface temperature varies. Wind environmental data is an important component of quantitative research on building form and is necessary if urban climate scientists and planners are to explore and enhance potential ventilated corridors within cities.
Key words: frontal area index; MODIS; urban heat island; urban wind condition; Changchun
FENG Zhangxian , WANG Shijun , JIN Shanhe , YANG Jun . Effects of urban morphology and wind conditions on land surface temperature in Changchun[J]. Acta Geographica Sinica, 2019 , 74(5) : 902 -911 . DOI: 10.11821/dlxb201905005
表1 数据来源和说明Tab. 1 Descriptions of data sources |
相关参数 | 数据类型 | ||
---|---|---|---|
Terra-MODIS(MODLT1D) | 建筑矢量数据(建筑楼层数) | 气象数据(风速、风频率) | |
空间分辨率 | 1 km | - | - |
时间 | 2016-5-17 | 2016 | 2016 |
数据来源 | https://ladsweb.modaps.eosdis.nasa.gov/ | 百度地图 | https://rp5.ru/ |
表2 长春市不同市辖区地表温度分布Tab. 2 The distribution of surface temperature within different municipal districts in Changchun |
城区 | 建筑占地面积(km2) | 昼/夜地表温度(℃) |
---|---|---|
绿园区 | 19.89 | 26.61~31.73/13.47~18.13 |
宽城区 | 10.36 | 24.33~31.29/13.57~18.17 |
二道区 | 13.86 | 19.01~31.41/10.33~18.23 |
朝阳区 | 11.84 | 23.33~31.25/4.27~18.13 |
南关区 | 15.61 | 18.15~31.25/6.15~18.43 |
The authors have declared that no competing interests exist.
作者已声明无竞争性利益关系。
[1] |
[ 初征, 郭建平, 赵俊芳 . 东北地区未来气候变化对农业气候资源的影响. 地理学报, 2017,72(7):1248-1260.]
|
[2] |
[ 乔治, 田光进 . 基于MODIS的2001年-2012年北京热岛足迹及容量动态监测. 遥感学报, 2015,19(3):476-484.]
|
[3] |
[ 赵杰, 杜自强, 武志涛 , 等. 中国温带昼夜增温的季节性变化及其对植被动态的影响. 地理学报, 2018,73(3):395-404.]
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
|
[9] |
[ 杨俊, 国安东, 席建超 , 等. 城市三维景观格局时空分异特征研究: 以大连市中山区为例. 地理学报, 2017,72(4):646-656.]
|
[10] |
[ 陈利顶, 孙然好, 刘海莲 . 城市景观格局演变的生态环境效应研究进展. 生态学报, 2013,33(4):1043-1050.]
|
[11] |
|
[12] |
|
[13] |
[ 张佳华, 孟倩文, 李欣 , 等. 北京城区城市热岛的多时空尺度变化. 地理科学, 2011,31(11):1349-1354.]
|
[14] |
|
[15] |
|
[16] |
[ 任超, 袁超, 何正军 , 等. 城市通风廊道研究及其规划应用. 城市规划学刊, 2014(3):52-60.]
|
[17] |
|
[18] |
[ 杨俊宴, 张涛, 谭瑛 . 城市风环境研究的技术演进及其评价体系整合. 南方建筑, 2014,1(3):31-38.]
|
[19] |
[ 王天星, 陈松林, 阎广建 . 地表参数反演及城市热岛时空演变分析. 地理科学, 2009,29(5):697-702.]
|
[20] |
|
[21] |
|
[22] |
[ 姚永慧, 张百平 . 基于MODIS数据的青藏高原气温与增温效应估算. 地理学报, 2013,68(1):95-107.]
|
[23] |
[ 徐伟燕, 孙睿, 金志凤 , 等. 基于MODIS数据的近地表气温估算. 气象与环境科学, 2015,38(1):1-6.]
|
[24] |
|
[25] |
[ 袁振, 吴相利, 臧淑英 , 等. 基于TM影像的哈尔滨市主城区绿地降温作用研究. 地理科学, 2017,37(10):1600-1608.]
|
[26] |
|
[27] |
|
[28] |
|
[29] |
|
[30] |
Code for Design of Civil Buildings (GB50352-2005) Beijing: China Architecture and Building Press, 2005.
[ 民用建筑设计通则(GB50352-2005). 北京: 中国建筑工业出版社, 2005.]
|
[31] |
|
[32] |
|
[33] |
|
[34] |
|
[35] |
|
/
〈 |
|
〉 |