A novel integrated approach for monitoring drought stress in an aeolian desertification area using Vegetation Drought Status Index
Drought is a costly natural disaster. The accuracy and applicability of different drought indexes in drought monitoring at different research areas are also different. Based on remote sensing (RS) and geographic information system technology, we propose a new RS-based drought index, Vegetation Droug...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-02-01
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| Series: | Water Supply |
| Subjects: | |
| Online Access: | http://ws.iwaponline.com/content/23/2/738 |
| _version_ | 1797850625180958720 |
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| author | Zhixin Zhao Qi Liu Aidi Huo Yuxiang Cheng Wenke Guan EL-Sayed Abuarab Mohamed Ali Mokhtar Ahmed Elbeltagi |
| author_facet | Zhixin Zhao Qi Liu Aidi Huo Yuxiang Cheng Wenke Guan EL-Sayed Abuarab Mohamed Ali Mokhtar Ahmed Elbeltagi |
| author_sort | Zhixin Zhao |
| collection | DOAJ |
| description | Drought is a costly natural disaster. The accuracy and applicability of different drought indexes in drought monitoring at different research areas are also different. Based on remote sensing (RS) and geographic information system technology, we propose a new RS-based drought index, Vegetation Drought Status Index (VDSI), for agricultural drought monitoring in both arid and humid regions using multi-sensor data. This index combines the Normalized Difference Vegetation Index (NDVI) data from Moderate Resolution Imaging Spectroradiometer (MODIS) sensor and data from 81 verification points regarding the in situ soil drought status. The model was applied to drought monitoring in Xinjiang Uygur Autonomous Region of China. Based on the comprehensive influence of water absorption on the reflectance spectrum of vegetation and soil, the reflectance of soil in MODIS bands B6 and B7 is generally higher than that of vegetation, so the model can directly obtain the surface soil moisture index. The correlation analysis (R2 > 0.79) was valid; the change trends were the same; i.e., VDSI is a reliable referential index for agricultural drought monitoring.
HIGHLIGHTS
A new drought index based on remote sensing – Vegetation Drought State Index (VDSI) was proposed.;
The model can directly obtain the surface soil moisture index.;
The results are applicable to agricultural drought monitoring in arid and humid regions.; |
| first_indexed | 2024-04-09T19:03:20Z |
| format | Article |
| id | doaj.art-206095a8b8ef47afa9fd74236b9f6403 |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-04-09T19:03:20Z |
| publishDate | 2023-02-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-206095a8b8ef47afa9fd74236b9f64032023-04-07T15:15:01ZengIWA PublishingWater Supply1606-97491607-07982023-02-0123273874810.2166/ws.2023.018018A novel integrated approach for monitoring drought stress in an aeolian desertification area using Vegetation Drought Status IndexZhixin Zhao0Qi Liu1Aidi Huo2Yuxiang Cheng3Wenke Guan4EL-Sayed Abuarab Mohamed5Ali Mokhtar6Ahmed Elbeltagi7 School of Water and Environment, Chang'an University, Xi'an, Shaanxi 710054, China School of Water and Environment, Chang'an University, Xi'an, Shaanxi 710054, China School of Water and Environment, Chang'an University, Xi'an, Shaanxi 710054, China College of Geology Engineering and Geomatics, Chang'an University, Xi'an, Shaanxi 710054, China Afforestation Desert Control Research Institute, Xinjiang Academy of Forestry, Urumqi 830000, China Faculty of Agriculture, Cairo University, Giza 12613, Egypt Faculty of Agriculture, Cairo University, Giza 12613, Egypt Agricultural Engineering Department, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt Drought is a costly natural disaster. The accuracy and applicability of different drought indexes in drought monitoring at different research areas are also different. Based on remote sensing (RS) and geographic information system technology, we propose a new RS-based drought index, Vegetation Drought Status Index (VDSI), for agricultural drought monitoring in both arid and humid regions using multi-sensor data. This index combines the Normalized Difference Vegetation Index (NDVI) data from Moderate Resolution Imaging Spectroradiometer (MODIS) sensor and data from 81 verification points regarding the in situ soil drought status. The model was applied to drought monitoring in Xinjiang Uygur Autonomous Region of China. Based on the comprehensive influence of water absorption on the reflectance spectrum of vegetation and soil, the reflectance of soil in MODIS bands B6 and B7 is generally higher than that of vegetation, so the model can directly obtain the surface soil moisture index. The correlation analysis (R2 > 0.79) was valid; the change trends were the same; i.e., VDSI is a reliable referential index for agricultural drought monitoring. HIGHLIGHTS A new drought index based on remote sensing – Vegetation Drought State Index (VDSI) was proposed.; The model can directly obtain the surface soil moisture index.; The results are applicable to agricultural drought monitoring in arid and humid regions.;http://ws.iwaponline.com/content/23/2/738drought monitoringmodisrssoil moisturexinjiang |
| spellingShingle | Zhixin Zhao Qi Liu Aidi Huo Yuxiang Cheng Wenke Guan EL-Sayed Abuarab Mohamed Ali Mokhtar Ahmed Elbeltagi A novel integrated approach for monitoring drought stress in an aeolian desertification area using Vegetation Drought Status Index Water Supply drought monitoring modis rs soil moisture xinjiang |
| title | A novel integrated approach for monitoring drought stress in an aeolian desertification area using Vegetation Drought Status Index |
| title_full | A novel integrated approach for monitoring drought stress in an aeolian desertification area using Vegetation Drought Status Index |
| title_fullStr | A novel integrated approach for monitoring drought stress in an aeolian desertification area using Vegetation Drought Status Index |
| title_full_unstemmed | A novel integrated approach for monitoring drought stress in an aeolian desertification area using Vegetation Drought Status Index |
| title_short | A novel integrated approach for monitoring drought stress in an aeolian desertification area using Vegetation Drought Status Index |
| title_sort | novel integrated approach for monitoring drought stress in an aeolian desertification area using vegetation drought status index |
| topic | drought monitoring modis rs soil moisture xinjiang |
| url | http://ws.iwaponline.com/content/23/2/738 |
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