نوع مقاله : مقاله پژوهشی
1 کارشناس ارشد هواشناسی کشا ورزی دانشگاه شیراز
2 استاد بخش مهندسی آب دانشکده کشا ورزی دانشگاه شیراز
3 دانشیار بخش مدیریت مناطق بیابانی دانشکده کشاورزی دانشگاه شیراز
عنوان مقاله [English]
Canopy temperature is an important factor for irrigation scheduling. This is because canopy temperature is depend plant water status. This research evaluated usefulness of Modis sensor for estimating wheat canopy temperature. Relationship between temperature and values of digital satellite images were determined on different levels of plant height and then models were evaluated. Based on the results, the best correlation between the temperature of the green cover were with band 34&25, band 3 and band 2 in the special resolution of 1000 m, 500m and 250m respectively, and RMSE was equal to 3.6, 3.6 and 5.3 in the special resolution of 1000 m, 500m and 250m respectively. Lowest error was observed at the top of canopy and maximum error was at the bottom of plant. Result showed that measuring canopy temperature by using remote sensing is possible but magnitude of error showed that models need some modification.