Monitoring land-use changes using remote sensing, ENVI and ArcGIS software in Hamoun Wetlands
- سال انتشار: 1401
- محل انتشار: سومین کنفرانس بین المللی و ششمین کنفرانس ملی صیانت از منابع طبیعی و محیط زیست
- کد COI اختصاصی: CNRE06_083
- زبان مقاله: انگلیسی
- تعداد مشاهده: 266
نویسندگان
M.Sc. Graduate of Irrigation and Drainage, Department of Irrigation and Drainage, College of Aburaihan,University of Tehran, Iran
Master of Water Resources Engineering, Imam Khomeini International University, Iran
Master's degree in irrigation and drainage engineering Islamic Azad University, Science and Research Branch,Tehran, Iran
M.Sc. Graduate of Irrigation and Drainage, Department of Irrigation and Drainage, College of Aburaihan,University of Tehran, Iran
Academic member of Agricultural Engineering Research Department, Khorasan Razavi Agricultural and NaturalResources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO),Mashhad, Iran
M.Sc. Graduate of Water Resources Engineering, University of Zabol, Iran.
چکیده
This study aimed to investigate the trend of land-use change in Hamoun Helmand, Hamoun Sabori, and Hamoun Poozak wetlands in a five-year period. For this purpose, images of the Sentinel ۲ satellite were prepared and processed from ۲۰۱۶ to ۲۰۲۰. After atmospheric corrections, the images were classified using the minimum distance method (supervised classification) in ENV software. NDVI and NDWI indices were also extracted. Classified maps were validated with samples taken from Google Earth images. The maps extracted from the minimum distance method, from ۲۰۱۶ to ۲۰۲۰, have a kappa coefficient of ۰.۸, ۰.۷۴, ۰.۷۹, ۰.۷۳, and ۰.۷۶, respectively, the extracted maps of the NDVI index have a kappa coefficient of ۰.۹, ۰.۹۴, ۰.۸۹, ۰.۸۱ and ۰.۷۴, The extracted maps of NDWI index had kappa coefficients of ۰.۹۴, ۰.۸۹, ۰.۸۱, ۰.۸۷ and ۰.۹۹. The correlation coefficient (R۲) of the results obtained from the NDWI index with the results of the minimum distance method was ۰.۹۹. However, the value of this variable for the results of the NDVI index with the method of minimum distance is equal to ۰.۳۷. The results of this study indicate that from ۲۰۱۶ to ۲۰۱۸, the water area has decreased by ۷% and has been replaced by vegetation. The results of this study indicate that from ۲۰۱۶ to ۲۰۱۸, the water area has decreased by ۷% and has been replaced by vegetation. Also, ۸% of the barren land area has become saline. With the increase of rainfall in ۲۰۱۹ and ۲۰۲۰, an increase in the water area and grassland and a decrease in a barren land and saline fields have been observed. It should be noted that although Hamoun Wetlands had a significant water area in ۲۰۲۰ thanks to spring rains, cross-sectional rains could not be a permanent solution to the problems caused by lake drying in the Hamoun area. The problems that have arisen in the Sistan region over the years require a coherent multi-year plan between Iran and Afghanistan. One of the proposed solutions, considering the capacities of the Sistan region, is to use the region's wind to produce energy and transfer it.کلیدواژه ها
NDVI, NDWI, Minimum distance method, kappa coefficientاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.