A simple but actionable metric for assessing inequity in resident greenspace exposure
An increasing number of studies aim to improve and perfect the evaluation system for assessing greenspace exposure, yet it may also become more difficult to apply the evaluation index to landscape planning. Here we propose a simple but actionable index system – Greenspace Exposure Inequity index (GE...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X23005654 |
| _version_ | 1797802853253775360 |
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| author | Zhaowu Yu Weiyuan Ma Shiyuan Hu Xihan Yao Gaoyuan Yang Zhaowen Yu Bin Jiang |
| author_facet | Zhaowu Yu Weiyuan Ma Shiyuan Hu Xihan Yao Gaoyuan Yang Zhaowen Yu Bin Jiang |
| author_sort | Zhaowu Yu |
| collection | DOAJ |
| description | An increasing number of studies aim to improve and perfect the evaluation system for assessing greenspace exposure, yet it may also become more difficult to apply the evaluation index to landscape planning. Here we propose a simple but actionable index system – Greenspace Exposure Inequity index (GEII), for assessing the inequity of residents' greenspace exposure. GEII includes quantity-based availability, distance-based accessibility, and inequity-based Gini index for assessing the difference in greenspace exposure pattern. Then we selected Shanghai as a case to test the feasibility of GEII, analyzing the spatiotemporal evolution of greenspace exposure patterns, and further demonstrating the operability of the index. (1) Availability inequity for 2012, 2015, 2018, and 2021 was 0.603, 0.512, 0.514, and 0.489. The Gini index was between 0.4 and 0.6, and presented a downward trend. (2) Accessibility inequity for 2012, 2015, 2018, and 2021 was 0.372, 0.368, 0.364, and 0.344. It can be clearly seen that it has changed less over ten years, but overall equality has been rising. (3) Using GEII to calculate the inequity of Shanghai, the Gini index for 2012, 2015, 2018, and 2021 was 0.392, 0.378, 0.373, and 0.357. The inequity of greenspace exposure assessed by GEII is gradually decreasing similarly, which illustrates the positive impact of urban greening policies. The GEII has three highlights: serviceability, human-oriented, and expandability. GEII abandons the complex computational evaluation procedures of numerous indicators and bridges the gap between theoretical research on inequity and practical planning, so GEII is of great value for alleviating the uneven exposure of residents' greenspace and scientifically optimizing landscape planning. |
| first_indexed | 2024-03-13T05:13:02Z |
| format | Article |
| id | doaj.art-6d58f2c994604bba847299ee39928e54 |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-13T05:13:02Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-6d58f2c994604bba847299ee39928e542023-06-16T05:08:44ZengElsevierEcological Indicators1470-160X2023-09-01153110423A simple but actionable metric for assessing inequity in resident greenspace exposureZhaowu Yu0Weiyuan Ma1Shiyuan Hu2Xihan Yao3Gaoyuan Yang4Zhaowen Yu5Bin Jiang6Department of Environmental Science and Engineering, Fudan University, 200438 Shanghai, China; Corresponding author.Department of Environmental Science and Engineering, Fudan University, 200438 Shanghai, ChinaDepartment of Environmental Science and Engineering, Fudan University, 200438 Shanghai, ChinaDepartment of Environmental Science and Engineering, Fudan University, 200438 Shanghai, ChinaSchool of Environmental and Geographical Sciences, Shanghai Normal University, 200234 Shanghai, ChinaTaining County Power Supply Company, State Grid Fujian Electric Power Co., LTD., 354400 Fuzhou, ChinaDivision of Landscape Architecture, Department of Architecture, The University of Hong Kong, Hong Kong, ChinaAn increasing number of studies aim to improve and perfect the evaluation system for assessing greenspace exposure, yet it may also become more difficult to apply the evaluation index to landscape planning. Here we propose a simple but actionable index system – Greenspace Exposure Inequity index (GEII), for assessing the inequity of residents' greenspace exposure. GEII includes quantity-based availability, distance-based accessibility, and inequity-based Gini index for assessing the difference in greenspace exposure pattern. Then we selected Shanghai as a case to test the feasibility of GEII, analyzing the spatiotemporal evolution of greenspace exposure patterns, and further demonstrating the operability of the index. (1) Availability inequity for 2012, 2015, 2018, and 2021 was 0.603, 0.512, 0.514, and 0.489. The Gini index was between 0.4 and 0.6, and presented a downward trend. (2) Accessibility inequity for 2012, 2015, 2018, and 2021 was 0.372, 0.368, 0.364, and 0.344. It can be clearly seen that it has changed less over ten years, but overall equality has been rising. (3) Using GEII to calculate the inequity of Shanghai, the Gini index for 2012, 2015, 2018, and 2021 was 0.392, 0.378, 0.373, and 0.357. The inequity of greenspace exposure assessed by GEII is gradually decreasing similarly, which illustrates the positive impact of urban greening policies. The GEII has three highlights: serviceability, human-oriented, and expandability. GEII abandons the complex computational evaluation procedures of numerous indicators and bridges the gap between theoretical research on inequity and practical planning, so GEII is of great value for alleviating the uneven exposure of residents' greenspace and scientifically optimizing landscape planning.http://www.sciencedirect.com/science/article/pii/S1470160X23005654Greenspace exposure inequity indexAvailabilityAccessibilityGini indexLandscape planning |
| spellingShingle | Zhaowu Yu Weiyuan Ma Shiyuan Hu Xihan Yao Gaoyuan Yang Zhaowen Yu Bin Jiang A simple but actionable metric for assessing inequity in resident greenspace exposure Ecological Indicators Greenspace exposure inequity index Availability Accessibility Gini index Landscape planning |
| title | A simple but actionable metric for assessing inequity in resident greenspace exposure |
| title_full | A simple but actionable metric for assessing inequity in resident greenspace exposure |
| title_fullStr | A simple but actionable metric for assessing inequity in resident greenspace exposure |
| title_full_unstemmed | A simple but actionable metric for assessing inequity in resident greenspace exposure |
| title_short | A simple but actionable metric for assessing inequity in resident greenspace exposure |
| title_sort | simple but actionable metric for assessing inequity in resident greenspace exposure |
| topic | Greenspace exposure inequity index Availability Accessibility Gini index Landscape planning |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X23005654 |
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