دورية أكاديمية
Water stress coefficient determined by orbital remote sensing techniques
| العنوان: | Water stress coefficient determined by orbital remote sensing techniques |
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| المؤلفون: | Élvis da S. Alves, Roberto Filgueiras, Lineu N. Rodrigues, Fernando F. da Cunha, Catariny C. Aleman |
| المصدر: | Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi, Vol 24, Iss 12, Pp 847-853 (2020) |
| بيانات النشر: | Universidade Federal de Campina Grande |
| سنة النشر: | 2020 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | actual evapotranspiration, water need, SAFER, NDVI, Agriculture (General), S1-972 |
| الوصف: | In regions where the irrigated area is increasing and water availability is reduced, such as the West of the Bahia state, Brazil, the use of techniques that contribute to improving water use efficiency is paramount. One of the ways to improve irrigation is by improving the calculation of actual evapotranspiration (ETa), which among other factors is influenced by soil drying, so it is important to understand this relationship, which is usually accounted for in irrigation management models through the water stress coefficient (Ks). This study aimed to estimate the water stress coefficient (Ks) through information obtained via remote sensing, combined with field data. For this, a study was carried out in the municipality of São Desidério, an area located in western Bahia, using images of the Landsat-8 satellite. Ks was calculated by the relationship between crop evapotranspiration and ETa, calculated by the Simple Algorithm for Evapotranspiration Retrieving (SAFER). The Ks estimated by remote sensing showed, for the development and medium stages, average errors on the order of 5.50%. In the final stage of maize development, the errors obtained were of 23.2%. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English Spanish; Castilian Portuguese |
| تدمد: | 1807-1929 |
| العلاقة: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020001200847&tlng=enTest; http://www.scielo.br/pdf/rbeaa/v24n12/1807-1929-rbeaa-24-12-0847.pdfTest; https://doaj.org/toc/1807-1929Test; https://doaj.org/article/f119a2e223f84e8b86f27310d85bc264Test |
| DOI: | 10.1590/1807-1929/agriambi.v24n12p847-853 |
| الإتاحة: | https://doi.org/10.1590/1807-1929/agriambi.v24n12p847-853Test https://doaj.org/article/f119a2e223f84e8b86f27310d85bc264Test |
| رقم الانضمام: | edsbas.CA959F41 |
| قاعدة البيانات: | BASE |
| تدمد: | 18071929 |
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| DOI: | 10.1590/1807-1929/agriambi.v24n12p847-853 |