干旱区生态环境知识资源中心(Arid): 干旱区典型城市下垫面特征及其与地表热环境的关系研究

Arid

	干旱区典型城市下垫面特征及其与地表热环境的关系研究
其他题名	Study on Land Surface Characteristics and Its Relationship with Land Surface Thermal Environment of Typical City in Arid Region
	买买提江·买提尼亚孜 1; 阿里木江·卡斯木 2
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2015
卷号	24 期号:11 页码:1865-1871
中文摘要	基于2011年8月11日Landsat TM遥感影像,利用混合光谱线性分解模型提取乌鲁木齐市建成区下垫面不透水面丰度和植被覆盖度信息,利用单窗算法定量反演建成区地表温度,并通过分级方法分析两个要素的空间分布特征;在此基础上,利用回归模型对乌鲁木齐市建成区不透水面丰度、植被覆盖度与地表热环境之间的关系进行相关性分析。结果表明:(1)利用混合光谱线性分解方法,基于中等分辨率TM影像提取干旱区城市乌鲁木齐建成区不透水面,成本低,精度高(精度检验总体均方根RMS为0.003,远小于精度规定值0.02),且该方法可较好地区分光谱特性相似的城市建设用地和裸地,对干旱区城市用地信息提取具有一定的借鉴意义;(2)乌鲁木齐市建成区不透水面丰度与地表温度呈线性正相关,R~2为0.69,植被盖度与地表温度呈线性负相关,R~2为0.74;(3)裸地因具有极高的地表温度,形成局部的热岛中心,对干旱区城市地表热环境具有重要影响,因此减少和改变裸地对于缓解干旱区城市热岛效应,改善城市热环境具有重要意义。
英文摘要	Landsat TM images of August 11th, 2011 were used to acquire the abundance of impervious surface Area (ISA) and vegetation fraction (FV) information of Urumqi city’s build-up area based on Linear Spectral. Unmixing Model, and land surface temperature (LST) was retrieved using Mono-Window Algorithm of that area as well, then spatial distribution characteristics of these factors were analyzed based on hierarchical method. On basis of this, the correlation relationship between abundance of ISA, FV and LST was analyzed respectively. The results show that: (1) Linear Spectral Unmixing Model is proved to be a method with low cost and high precision in extracting ISA when using medium resolution remote sensing image in this case (RMS is 0.003, much smaller than the threshold value 0.02), and it has advantages of distinguishing urban construction land and bare soil which have similar spectral characteristics; (2) Abundance of ISA is positively correlated with LST with R square of 0.69, and FV is negatively correlated with LST with R square of 0.74; (3) Bare soil has significant influence on the formation of heat island and the surface thermal environment of cities in arid region because of extremely high LST, so reducing and changing bare soil of cities in arid region is very helpful to mitigate urban heat island effect and improve the thermal environment of the whole city.
中文关键词	不透水面 ; 热岛效应 ; 混合光谱分解 ; 乌鲁木齐 ; 干旱区
英文关键词	impervious surface area (ISA) heat island effect spectral unmixing Urumqi arid region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5601707
来源机构	新疆农业大学 ; 新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233120
作者单位	1.新疆农业大学管理学院, 乌鲁木齐, 新疆 830052, 中国; 2.新疆师范大学地理科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国
推荐引用方式 GB/T 7714	买买提江·买提尼亚孜,阿里木江·卡斯木. 干旱区典型城市下垫面特征及其与地表热环境的关系研究[J]. 新疆农业大学, 新疆师范大学,2015,24(11):1865-1871.
APA	买买提江·买提尼亚孜,&阿里木江·卡斯木.(2015).干旱区典型城市下垫面特征及其与地表热环境的关系研究.生态环境学报,24(11),1865-1871.
MLA	买买提江·买提尼亚孜,et al."干旱区典型城市下垫面特征及其与地表热环境的关系研究".生态环境学报 24.11(2015):1865-1871.