Quantifying the Impacts of the 2020 Flood on Crop Production and Food Security in the Middle Reaches of the Yangtze River, China
This study uses satellite imagery and geospatial data to examine the impact of floods over the main planting areas for double-cropping rice and grain crops in the middle reaches of the Yangtze River. During summer 2020, a long-lasting 62-day heavy rainfall caused record-breaking floods over large ar...
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| Format: | Artykuł |
| Język: | English |
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MDPI AG
2022-06-01
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| Seria: | Remote Sensing |
| Hasła przedmiotowe: | |
| Dostęp online: | https://www.mdpi.com/2072-4292/14/13/3140 |
| _version_ | 1827619278583496704 |
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| author | Liang-Chen Wang Duc Vinh Hoang Yuei-An Liou |
| author_facet | Liang-Chen Wang Duc Vinh Hoang Yuei-An Liou |
| author_sort | Liang-Chen Wang |
| collection | DOAJ |
| description | This study uses satellite imagery and geospatial data to examine the impact of floods over the main planting areas for double-cropping rice and grain crops in the middle reaches of the Yangtze River. During summer 2020, a long-lasting 62-day heavy rainfall caused record-breaking floods over large areas of China, especially the Yangtze basin. Through close examination of Sentinel-1/2 satellite imagery and Copernicus Global Land Cover, between July and August 2020, the inundation area reached 21,941 and 23,063 km<sup>2</sup>, and the crop-affected area reached 11,649 and 11,346 km<sup>2</sup>, respectively. We estimated that approximately 4.66 million metric tons of grain crops were seriously affected in these two months. While the PRC government denied that food security existed, the number of Grains and Feeds imported from the U.S. between January to July 2021 increased by 316%. This study shows that with modern remote sensing techniques, stakeholders can obtain critical estimates of large-scale disaster events much earlier than other indicators, such as disaster field surveys or crop price statistics. Potential use could include but is not limited to monitoring floods and land use coverage changes. |
| first_indexed | 2024-03-09T10:25:00Z |
| format | Article |
| id | doaj.art-28b7fa09da4f490e8681aa8fa0d76ff6 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T10:25:00Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-28b7fa09da4f490e8681aa8fa0d76ff62023-12-01T21:40:51ZengMDPI AGRemote Sensing2072-42922022-06-011413314010.3390/rs14133140Quantifying the Impacts of the 2020 Flood on Crop Production and Food Security in the Middle Reaches of the Yangtze River, ChinaLiang-Chen Wang0Duc Vinh Hoang1Yuei-An Liou2Department of Space Science and Engineering, National Central University, 300 Jhongda Road, Jhongli District, Taoyuan City 320317, TaiwanCenter for Space and Remote Sensing Research, National Central University, 300 Jhongda Road, Jhongli District, Taoyuan City 320317, TaiwanCenter for Space and Remote Sensing Research, National Central University, 300 Jhongda Road, Jhongli District, Taoyuan City 320317, TaiwanThis study uses satellite imagery and geospatial data to examine the impact of floods over the main planting areas for double-cropping rice and grain crops in the middle reaches of the Yangtze River. During summer 2020, a long-lasting 62-day heavy rainfall caused record-breaking floods over large areas of China, especially the Yangtze basin. Through close examination of Sentinel-1/2 satellite imagery and Copernicus Global Land Cover, between July and August 2020, the inundation area reached 21,941 and 23,063 km<sup>2</sup>, and the crop-affected area reached 11,649 and 11,346 km<sup>2</sup>, respectively. We estimated that approximately 4.66 million metric tons of grain crops were seriously affected in these two months. While the PRC government denied that food security existed, the number of Grains and Feeds imported from the U.S. between January to July 2021 increased by 316%. This study shows that with modern remote sensing techniques, stakeholders can obtain critical estimates of large-scale disaster events much earlier than other indicators, such as disaster field surveys or crop price statistics. Potential use could include but is not limited to monitoring floods and land use coverage changes.https://www.mdpi.com/2072-4292/14/13/3140Sentinelsynthetic aperture radarCopernicus Global Land Covercrop productionfood securitymiddle reaches of the Yangtze River |
| spellingShingle | Liang-Chen Wang Duc Vinh Hoang Yuei-An Liou Quantifying the Impacts of the 2020 Flood on Crop Production and Food Security in the Middle Reaches of the Yangtze River, China Remote Sensing Sentinel synthetic aperture radar Copernicus Global Land Cover crop production food security middle reaches of the Yangtze River |
| title | Quantifying the Impacts of the 2020 Flood on Crop Production and Food Security in the Middle Reaches of the Yangtze River, China |
| title_full | Quantifying the Impacts of the 2020 Flood on Crop Production and Food Security in the Middle Reaches of the Yangtze River, China |
| title_fullStr | Quantifying the Impacts of the 2020 Flood on Crop Production and Food Security in the Middle Reaches of the Yangtze River, China |
| title_full_unstemmed | Quantifying the Impacts of the 2020 Flood on Crop Production and Food Security in the Middle Reaches of the Yangtze River, China |
| title_short | Quantifying the Impacts of the 2020 Flood on Crop Production and Food Security in the Middle Reaches of the Yangtze River, China |
| title_sort | quantifying the impacts of the 2020 flood on crop production and food security in the middle reaches of the yangtze river china |
| topic | Sentinel synthetic aperture radar Copernicus Global Land Cover crop production food security middle reaches of the Yangtze River |
| url | https://www.mdpi.com/2072-4292/14/13/3140 |
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