Patch-Based Local Climate Zones Mapping and Population Distribution Pattern in Provincial Capital Cities of China
Accurate urban morphology provided by Local Climate Zones (LCZ), a universal surface classification scheme, offers opportunities for studies of urban heat risk, urban ventilation, and transport planning. In recent years, researchers have attempted to generate LCZ maps worldwide with the World Urban...
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| Format: | Article |
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MDPI AG
2022-07-01
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| Series: | ISPRS International Journal of Geo-Information |
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| Online Access: | https://www.mdpi.com/2220-9964/11/8/420 |
| _version_ | 1797444967448182784 |
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| author | Liang Zhou Lei Ma Brian Alan Johnson Ziyun Yan Feixue Li Manchun Li |
| author_facet | Liang Zhou Lei Ma Brian Alan Johnson Ziyun Yan Feixue Li Manchun Li |
| author_sort | Liang Zhou |
| collection | DOAJ |
| description | Accurate urban morphology provided by Local Climate Zones (LCZ), a universal surface classification scheme, offers opportunities for studies of urban heat risk, urban ventilation, and transport planning. In recent years, researchers have attempted to generate LCZ maps worldwide with the World Urban Database and Access Portal Tools (WUDAPT). However, the accuracy of LCZ mapping is not satisfactory and cannot fulfill the quality demands of practical usage. Here, we constructed a high-quality sample dataset from Chinese cities and presented a patch-based classification framework that employs chessboard segmentation and multi-seasonal images for LCZ mapping. Compared with the latest WUDAPT method, the overall accuracy for all LCZ types (OA) and urban LCZ types (OA<sub>u</sub>) of our framework increased by about 10% and 9%, respectively. Furthermore, based on the analysis of population distribution, we first gave the population density of different built-up LCZs of Chinese cities and found a hierarchical effect of population density among built-up LCZs in different size cities. In summary, this study could serve as a valuable reference for producing high-quality LCZ maps and understanding population distribution patterns in built-up LCZ types. |
| first_indexed | 2024-03-09T13:19:06Z |
| format | Article |
| id | doaj.art-1049c953927241ccacad676a4ac3eefb |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-03-09T13:19:06Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-1049c953927241ccacad676a4ac3eefb2023-11-30T21:31:53ZengMDPI AGISPRS International Journal of Geo-Information2220-99642022-07-0111842010.3390/ijgi11080420Patch-Based Local Climate Zones Mapping and Population Distribution Pattern in Provincial Capital Cities of ChinaLiang Zhou0Lei Ma1Brian Alan Johnson2Ziyun Yan3Feixue Li4Manchun Li5Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources, School of Geography and Ocean Science, Nanjing University, Nanjing 210023, ChinaJiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources, School of Geography and Ocean Science, Nanjing University, Nanjing 210023, ChinaNatural Resources and Ecosystem Services, Institute for Global Environmental Strategies, 2108-11, Kamiyamaguchi, Hayama, Kanagawa 240-0115, JapanJiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources, School of Geography and Ocean Science, Nanjing University, Nanjing 210023, ChinaJiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources, School of Geography and Ocean Science, Nanjing University, Nanjing 210023, ChinaJiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources, School of Geography and Ocean Science, Nanjing University, Nanjing 210023, ChinaAccurate urban morphology provided by Local Climate Zones (LCZ), a universal surface classification scheme, offers opportunities for studies of urban heat risk, urban ventilation, and transport planning. In recent years, researchers have attempted to generate LCZ maps worldwide with the World Urban Database and Access Portal Tools (WUDAPT). However, the accuracy of LCZ mapping is not satisfactory and cannot fulfill the quality demands of practical usage. Here, we constructed a high-quality sample dataset from Chinese cities and presented a patch-based classification framework that employs chessboard segmentation and multi-seasonal images for LCZ mapping. Compared with the latest WUDAPT method, the overall accuracy for all LCZ types (OA) and urban LCZ types (OA<sub>u</sub>) of our framework increased by about 10% and 9%, respectively. Furthermore, based on the analysis of population distribution, we first gave the population density of different built-up LCZs of Chinese cities and found a hierarchical effect of population density among built-up LCZs in different size cities. In summary, this study could serve as a valuable reference for producing high-quality LCZ maps and understanding population distribution patterns in built-up LCZ types.https://www.mdpi.com/2220-9964/11/8/420local climate zonespatch-based classificationmulti-seasonal imagesWUDAPTpopulation distribution patternChinese cities |
| spellingShingle | Liang Zhou Lei Ma Brian Alan Johnson Ziyun Yan Feixue Li Manchun Li Patch-Based Local Climate Zones Mapping and Population Distribution Pattern in Provincial Capital Cities of China ISPRS International Journal of Geo-Information local climate zones patch-based classification multi-seasonal images WUDAPT population distribution pattern Chinese cities |
| title | Patch-Based Local Climate Zones Mapping and Population Distribution Pattern in Provincial Capital Cities of China |
| title_full | Patch-Based Local Climate Zones Mapping and Population Distribution Pattern in Provincial Capital Cities of China |
| title_fullStr | Patch-Based Local Climate Zones Mapping and Population Distribution Pattern in Provincial Capital Cities of China |
| title_full_unstemmed | Patch-Based Local Climate Zones Mapping and Population Distribution Pattern in Provincial Capital Cities of China |
| title_short | Patch-Based Local Climate Zones Mapping and Population Distribution Pattern in Provincial Capital Cities of China |
| title_sort | patch based local climate zones mapping and population distribution pattern in provincial capital cities of china |
| topic | local climate zones patch-based classification multi-seasonal images WUDAPT population distribution pattern Chinese cities |
| url | https://www.mdpi.com/2220-9964/11/8/420 |
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