نوع مقاله : پژوهشی کاربردی
نویسندگان
1 کارشناس ارشد، گروه آب‌وهواشناسی محیطی، دانشکده منابع طبیعی، دانشگاه کردستان، سنندج، ایران
2 دکترا اقلیم شناسی، گروه جغرافیای طبیعی، دانشکده علوم جغرافیایی و برنامه‌ریزی، دانشگاه اصفهان، اصفهان، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Drought is a natural phenomenon that can have detrimental effects on vegetation cover and agricultural activities. This study investigates the impact of drought on vegetation cover in Kurdistan Province, Iran, from 2000 to 2022, employing the remote sensing indices NDVI, EVI, and VCI. Vegetation cover data was extracted from MODIS satellite imagery and analyzed using the Google Earth Engine platform. The findings reveal significant changes in the distribution of vegetation cover classes (dense, moderate, weak, and no cover) over the study period. In 2020, the largest area was covered by the dense vegetation class (45.43%), while the smallest area was covered by weak vegetation cover (0.2%). In contrast, in 2004, the smallest area was covered by dense vegetation cover (3.25%), and the largest area was covered by weak vegetation cover (19.19%). In terms of drought, the study period experienced droughts of varying intensities. The years 2020 and 2012 had the least drought (with 95.43% and 67.75% of the area without drought, respectively), while the years 2004 and 2022 had the most drought (with 18.09% and 47.60% of the area without drought, respectively). A significant correlation was observed between dense vegetation cover and decreased drought severity. Years with the largest dense vegetation cover area (such as 2020) experienced the least drought, while years with an increase in weak vegetation cover area (such as 2004) witnessed an increase in drought severity.
کلیدواژه‌ها [English]
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