Effect of urban green patterns on surface urban cool islands and its seasonal variations
文献类型：期刊论文
| 作者 | Chen, Ailian ; Yao, X. Angela ; Sun, Ranhao ; Chen, Liding |
| 刊名 | URBAN FORESTRY & URBAN GREENING
 |
| 出版日期 | 2014 |
| 卷号 | 13期号:4页码:646-654 |
| 关键词 | Beijing Landscape metrics Landscape pattern Land surface temperature Urban heat island |
| ISSN号 | 1618-8667 |
| 中文摘要 | Urban green spaces often form urban cool islands (UCIs), which are important for human health and urban sustainability. Previous studies have emphasized the cooling effects of urban green spaces on their surrounding areas at landscape level. Less attention, however, has been directed to effects of urban green space patterns on their own UCIs at patch level. In this study, we focused on the effects of spatial patterns of urban green patches on their own surface UCIs. The urban green spaces of Beijing, China, were extracted from one QuickBird image and were classified as Trees, Shrubs, Grass, Crops, River and Lake. Land surface temperatures (LSTs) were derived from four Landsat images, each in one season. The UCI was represented by the minimum LST of each urban green patch. Results showed spatial patterns of urban green patches had significant effects on their UCIs in four seasons. In detail, the size, edge and connectivity of urban green spaces all affected the UCIs negatively, and the influence was stronger in warm seasons. Shape of urban green space also had effects on UCIs, but the effects were stronger in cool seasons. Great differences were found between predictive values of metrics for different green types. Shape metrics were more important for indicating UCIs of River, Trees and Crops than were patch size and connectivity. However, patch size and connectivity metrics were more effective in determining UCIs of Shrubs, Grass and Lake than were shape metrics. Further, among shape metrics, only shape index was a good indicator of UCIs. The results of this study suggest that a combination of specific urban green types and pattern metrics are a prerequisite for analyzing the influence of urban green patterns on UCIs and for urban green design. (C) 2014 Elsevier GmbH. All rights reserved. |
| WOS记录号 | WOS:000346547000006 |
| 公开日期 | 2015-03-23 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9141]  |
| 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 | Chen, Ailian,Yao, X. Angela,Sun, Ranhao,et al. Effect of urban green patterns on surface urban cool islands and its seasonal variations[J]. URBAN FORESTRY & URBAN GREENING,2014,13(4):646-654. |
| APA | Chen, Ailian,Yao, X. Angela,Sun, Ranhao,&Chen, Liding.(2014).Effect of urban green patterns on surface urban cool islands and its seasonal variations.URBAN FORESTRY & URBAN GREENING,13(4),646-654. |
| MLA | Chen, Ailian,et al."Effect of urban green patterns on surface urban cool islands and its seasonal variations".URBAN FORESTRY & URBAN GREENING 13.4(2014):646-654. |
入库方式： OAI收割
来源：生态环境研究中心
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