Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020
Drought has become one of the most devastating natural risks of agricultural production and the environment in almost all climate regions. Thus, understanding the spatiotemporal characteristics of drought and its associated impacts is crucial in drought early warning management and adaptation effort...
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2023
|
| Acceso en línea: | https://hdl.handle.net/10568/137607 |
| _version_ | 1855519837830250496 |
|---|---|
| author | Nguyen Quang Thi Ajit Govind Manh-Hung Le Nguyen Thuy Linh Tran Thi Mai Anh Nguyen Khac Hai Tuyen V. Ha |
| author_browse | Ajit Govind Manh-Hung Le Nguyen Khac Hai Nguyen Quang Thi Nguyen Thuy Linh Tran Thi Mai Anh Tuyen V. Ha |
| author_facet | Nguyen Quang Thi Ajit Govind Manh-Hung Le Nguyen Thuy Linh Tran Thi Mai Anh Nguyen Khac Hai Tuyen V. Ha |
| author_sort | Nguyen Quang Thi |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Drought has become one of the most devastating natural risks of agricultural production and the environment in almost all climate regions. Thus, understanding the spatiotemporal characteristics of drought and its associated impacts is crucial in drought early warning management and adaptation efforts. In this study, we used the 3-month Standardized Precipitation Index (SPI-3) obtained from Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) to investigate the space–time characteristics of drought conditions. Also, this study examined the impact of the SPI-based drought on vegetation health conditions using the Advanced Very High Resolution Radiometer (AVHRR) Normalized Difference Vegetation Index (NDVI) time-series data from 1981 to 2020. The results revealed that the region experiences drought primarily between July and September, with the most prolonged drought events lasting up to five months. Morocco suffered from more frequent droughts than other countries in the region. The Mann-Kendall test showed that the trend of drought became drier over the last decade, whereas the period from 1981 to 2010 witnessed either wetting or no trends. This study also found that the response of crops and grasslands showed higher correlation with the SPI-3 and that the response of vegetation to droughts was higher during the dry season. The findings of this study provide useful information to support local and regional drought planning and adaptation programs and enhance the understanding of drought development in the region. |
| format | Journal Article |
| id | CGSpace137607 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1376072025-12-08T09:54:28Z Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020 Nguyen Quang Thi Ajit Govind Manh-Hung Le Nguyen Thuy Linh Tran Thi Mai Anh Nguyen Khac Hai Tuyen V. Ha Drought has become one of the most devastating natural risks of agricultural production and the environment in almost all climate regions. Thus, understanding the spatiotemporal characteristics of drought and its associated impacts is crucial in drought early warning management and adaptation efforts. In this study, we used the 3-month Standardized Precipitation Index (SPI-3) obtained from Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) to investigate the space–time characteristics of drought conditions. Also, this study examined the impact of the SPI-based drought on vegetation health conditions using the Advanced Very High Resolution Radiometer (AVHRR) Normalized Difference Vegetation Index (NDVI) time-series data from 1981 to 2020. The results revealed that the region experiences drought primarily between July and September, with the most prolonged drought events lasting up to five months. Morocco suffered from more frequent droughts than other countries in the region. The Mann-Kendall test showed that the trend of drought became drier over the last decade, whereas the period from 1981 to 2010 witnessed either wetting or no trends. This study also found that the response of crops and grasslands showed higher correlation with the SPI-3 and that the response of vegetation to droughts was higher during the dry season. The findings of this study provide useful information to support local and regional drought planning and adaptation programs and enhance the understanding of drought development in the region. 2023-12 2024-01-11T19:54:41Z 2024-01-11T19:54:41Z Journal Article https://hdl.handle.net/10568/137607 en Open Access application/pdf Elsevier Nguyen Quang Thi, Ajit Govind, Manh-Hung Le, Nguyen Thuy Linh, Tran Thi Mai Anh, Nguyen Khac Hai, Tuyen V. Ha, 2023. Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020. The Egyptian Journal of Remote Sensing and Space Sciences. 26(3): 393-401 |
| spellingShingle | Nguyen Quang Thi Ajit Govind Manh-Hung Le Nguyen Thuy Linh Tran Thi Mai Anh Nguyen Khac Hai Tuyen V. Ha Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020 |
| title | Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020 |
| title_full | Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020 |
| title_fullStr | Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020 |
| title_full_unstemmed | Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020 |
| title_short | Spatiotemporal characterization of droughts and vegetation response in Northwest Africa from 1981 to 2020 |
| title_sort | spatiotemporal characterization of droughts and vegetation response in northwest africa from 1981 to 2020 |
| url | https://hdl.handle.net/10568/137607 |
| work_keys_str_mv | AT nguyenquangthi spatiotemporalcharacterizationofdroughtsandvegetationresponseinnorthwestafricafrom1981to2020 AT ajitgovind spatiotemporalcharacterizationofdroughtsandvegetationresponseinnorthwestafricafrom1981to2020 AT manhhungle spatiotemporalcharacterizationofdroughtsandvegetationresponseinnorthwestafricafrom1981to2020 AT nguyenthuylinh spatiotemporalcharacterizationofdroughtsandvegetationresponseinnorthwestafricafrom1981to2020 AT tranthimaianh spatiotemporalcharacterizationofdroughtsandvegetationresponseinnorthwestafricafrom1981to2020 AT nguyenkhachai spatiotemporalcharacterizationofdroughtsandvegetationresponseinnorthwestafricafrom1981to2020 AT tuyenvha spatiotemporalcharacterizationofdroughtsandvegetationresponseinnorthwestafricafrom1981to2020 |