این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
تولید محصولات زراعی و باغی، جلد ۱۰، شماره ۱، صفحات ۲۳۳-۲۴۶
عنوان فارسی اندازه‌گیری ویژگی‌های مورفومتریک خندق‌های جنوب شرق ایران با پردازش رقومی تصاویر سنجنده ETM+
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Morphometeric Characteristics Measurement of Gullies in Southeast of Iran by Processing of ETM+ Images
چکیده انگلیسی مقاله Dasht Yari plain is nearly 580,000 hectares which is under engraving gully erosion and unfortunately the gully development rate is increased in the recent decades. Satellite images may provide quick, extensive, and valuable information for the interpretation of morphometric characterstics of gully erosion expansion due to having attributes such as time series, relatively low cost, large coverage, and finally being capable of digital analysis. Therefore, this research was initiated to use these possible capabilities to find a quick and cost effective method to determine the morphometric characteristics of gullies with use of the Landsat ETM+ digital data of Dasht Yari plain in Chabahar county in southeast of Iran. The Landsat 7 data of 2001 and the field data collected from 25 selected gullies from the same area were used as control in this study. After geometric and haze corrections with use of spectral enhancement methods such as linear enhancement and color composites, the images were made ready for visual interpretation and selection field sites for the subsequent field sampling. On the selected 25 gullies, the field data collection including width, length, and height of gullies at 25%, 50%, and 75% cross sections was performed. At the end of the image processing, with use of image interpretation techniques such filtering, fusion and principal component analysis (PCA), morphometric characteristics of the gullies was computed and compared with the field data. Mean comparison and F and t-student tests were used to verify any statistical differences between two set of the data. The results showed that the data set were different at 1 and 5 percent levels. From the image processing methods, the PCA method had the smallest difference with the field collected data. Therefore, we may conclude that PCA method may be used for monitoring the gully expansion in the Dashat Yari plain and similar plains in the southeast of Iran.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله فاضل ایرانمنش | f iranmanesh


امیرحسین چرخابی | a h charkhabi


نادر جلالی | n jalali


نشانی اینترنتی http://jcpp.iut.ac.ir/browse.php?a_code=A-10-2-537&slc_lang=fa&sid=fa
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده fa
موضوعات مقاله منتشر شده عمومی
نوع مقاله منتشر شده پژوهشی
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات