Effects of spatial resolution of remotely sensed data on estimating urban impervious surfaces

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Effects of spatial resolution of remotely sensed data on estimating urban impervious surfaces
	Li, Weifeng ; Ouyang, Zhiyun ; Zhou, Weiqi ; Chen, Qiuwen
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2011
卷号	23 期号:8 页码:1375—1383
关键词	remote sensing impervious surface landscape pattern spatial resolution object-based image analysis urban landscape
中文摘要	Impervious surfaces are the result of urbanization that can be explicitly quantified, managed and controlled at each stage of land development. It is a very useful environmental indicator that can be used to measure the impacts of urbanization on surface runoff, water quality, air quality, biodiversity and microclimate. Therefore, accurate estimation of impervious surfaces is critical for urban environmental monitoring, land management, decision-making and urban planning. Many approaches have been developed to estimate surface imperviousness, using remotely sensed data with various spatial resolutions. However, few studies, have investigated the effects of spatial resolution on estimating surface imperviousness. We compare medium-resolution Landsat data with high-resolution SPOT images to quantify the imperviousness in Beijing, China. The results indicated that the overall 91% accuracy of estimates of imperviousness based on TM data was considerably higher than the 81% accuracy of the SPOT data. The higher resolution SPOT data did not always predict the imperviousness of the land better than the TM data. At the whole city level, the TM data better predicts the percentage cover of impervious surfaces. At the sub-city level, however, the ring belts from the central core to the urban-rural peripheral, the SPOT data may better predict the imperviousness. These results highlighted the need to combine multiple resolution data to quantify the percentage of imperviousness, as higher resolution data do not necessarily lead to more accurate estimates. The methodology and results in this study can be utilized to identify the most suitable remote sensing data to quickly and efficiently extract the pattern of the impervious land, which could provide the base for further study on many related urban environmental problems.
WOS记录号	WOS:000294315100019
公开日期	2012-10-18
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7135]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Li, Weifeng,Ouyang, Zhiyun,Zhou, Weiqi,et al. Effects of spatial resolution of remotely sensed data on estimating urban impervious surfaces[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2011,23(8):1375—1383.
APA	Li, Weifeng,Ouyang, Zhiyun,Zhou, Weiqi,&Chen, Qiuwen.(2011).Effects of spatial resolution of remotely sensed data on estimating urban impervious surfaces.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,23(8),1375—1383.
MLA	Li, Weifeng,et al."Effects of spatial resolution of remotely sensed data on estimating urban impervious surfaces".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 23.8(2011):1375—1383.