An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWI
Quantitative and accurate urban land information on regional and global scales is urgently required for studying socioeconomic and eco-environmental problems. The spatial distribution of urban land is a significant part of urban development planning, which is vital for optimizing land use patterns a...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-02-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/13/4/766 |
| _version_ | 1797396032857833472 |
|---|---|
| author | Yuanmao Zheng Qiang Zhou Yuanrong He Cuiping Wang Xiaorong Wang Haowei Wang |
| author_facet | Yuanmao Zheng Qiang Zhou Yuanrong He Cuiping Wang Xiaorong Wang Haowei Wang |
| author_sort | Yuanmao Zheng |
| collection | DOAJ |
| description | Quantitative and accurate urban land information on regional and global scales is urgently required for studying socioeconomic and eco-environmental problems. The spatial distribution of urban land is a significant part of urban development planning, which is vital for optimizing land use patterns and promoting sustainable urban development. Composite nighttime light (NTL) data from the Defense Meteorological Program Operational Line-Scan System (DMSP-OLS) have been proven to be effective for extracting urban land. However, the saturation and blooming within the DMSP-OLS NTL hinder its capacity to provide accurate urban information. This paper proposes an optimized approach that combines NTL with multiple index data to overcome the limitations of extracting urban land based only on NTL data. We combined three sources of data, the DMSP-OLS, the normalized difference vegetation index (NDVI), and the normalized difference water index (NDWI), to establish a novel approach called the vegetation–water-adjusted NTL urban index (VWANUI), which is used to rapidly extract urban land areas on regional and global scales. The results show that the proposed approach reduces the saturation of DMSP-OLS and essentially eliminates blooming effects. Next, we developed regression models based on the normalized DMSP-OLS, the human settlement index (HSI), the vegetation-adjusted NTL urban index (VANUI), and the VWANUI to analyze and estimate urban land areas. The results show that the VWANUI regression model provides the highest performance of all the models tested. To summarize, the VWANUI reduces saturation and blooming, and improves the accuracy with which urban areas are extracted, thereby providing valuable support and decision-making references for designing sustainable urban development. |
| first_indexed | 2024-03-09T00:44:27Z |
| format | Article |
| id | doaj.art-2c09e20973a14acc86cf4577bc3c2f41 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T00:44:27Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-2c09e20973a14acc86cf4577bc3c2f412023-12-11T17:37:03ZengMDPI AGRemote Sensing2072-42922021-02-0113476610.3390/rs13040766An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWIYuanmao Zheng0Qiang Zhou1Yuanrong He2Cuiping Wang3Xiaorong Wang4Haowei Wang5Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaKey Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaCollege of Computer and Information Engineering, Xiamen University of Technology, Xiamen 361024, ChinaCollege of Harbour and Environmental Engineering, Jimei University, Xiamen 361021, ChinaCollege of Computer and Information Engineering, Xiamen University of Technology, Xiamen 361024, ChinaKey Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, ChinaQuantitative and accurate urban land information on regional and global scales is urgently required for studying socioeconomic and eco-environmental problems. The spatial distribution of urban land is a significant part of urban development planning, which is vital for optimizing land use patterns and promoting sustainable urban development. Composite nighttime light (NTL) data from the Defense Meteorological Program Operational Line-Scan System (DMSP-OLS) have been proven to be effective for extracting urban land. However, the saturation and blooming within the DMSP-OLS NTL hinder its capacity to provide accurate urban information. This paper proposes an optimized approach that combines NTL with multiple index data to overcome the limitations of extracting urban land based only on NTL data. We combined three sources of data, the DMSP-OLS, the normalized difference vegetation index (NDVI), and the normalized difference water index (NDWI), to establish a novel approach called the vegetation–water-adjusted NTL urban index (VWANUI), which is used to rapidly extract urban land areas on regional and global scales. The results show that the proposed approach reduces the saturation of DMSP-OLS and essentially eliminates blooming effects. Next, we developed regression models based on the normalized DMSP-OLS, the human settlement index (HSI), the vegetation-adjusted NTL urban index (VANUI), and the VWANUI to analyze and estimate urban land areas. The results show that the VWANUI regression model provides the highest performance of all the models tested. To summarize, the VWANUI reduces saturation and blooming, and improves the accuracy with which urban areas are extracted, thereby providing valuable support and decision-making references for designing sustainable urban development.https://www.mdpi.com/2072-4292/13/4/766DMSP-OLS nighttime lightlogarithmic transformationNDVINDWIurban land |
| spellingShingle | Yuanmao Zheng Qiang Zhou Yuanrong He Cuiping Wang Xiaorong Wang Haowei Wang An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWI Remote Sensing DMSP-OLS nighttime light logarithmic transformation NDVI NDWI urban land |
| title | An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWI |
| title_full | An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWI |
| title_fullStr | An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWI |
| title_full_unstemmed | An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWI |
| title_short | An Optimized Approach for Extracting Urban Land Based on Log-Transformed DMSP-OLS Nighttime Light, NDVI, and NDWI |
| title_sort | optimized approach for extracting urban land based on log transformed dmsp ols nighttime light ndvi and ndwi |
| topic | DMSP-OLS nighttime light logarithmic transformation NDVI NDWI urban land |
| url | https://www.mdpi.com/2072-4292/13/4/766 |
| work_keys_str_mv | AT yuanmaozheng anoptimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT qiangzhou anoptimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT yuanronghe anoptimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT cuipingwang anoptimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT xiaorongwang anoptimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT haoweiwang anoptimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT yuanmaozheng optimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT qiangzhou optimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT yuanronghe optimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT cuipingwang optimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT xiaorongwang optimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi AT haoweiwang optimizedapproachforextractingurbanlandbasedonlogtransformeddmspolsnighttimelightndviandndwi |