نوع مقاله : مقاله پژوهشی
نویسندگان
1 سازمان جنگل‌ها، مراتع و آبخیزداری، دانشجوی دکتری آبخیزداری دانشگاه کشاورزی و منابعطبیعی ساری
2 دانشگاه پیام‌نور، دانشکده علوم کشاورزی،
3 دانشگاه پیام نور- دانشکده علوم کشاورزی- گروه علمی منابع طبیعی و محیط زیست
4 دانشگاه پیام نور، دانشکده علوم کشاورزی، گروه علمی منابعطبیعی و محیط زیست
5 پژوهشکده، حفاظت خاک و آبخیزداری کشور،
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Different regions of an area indicate distinct reactions against erosive forces (i.e. wind and water) depending on that region’s conditions like its morphological characteristics, geology, climate and kind of land use. As suspended materials increases in the river due to soil erosion, its ecosystem together with living creatures fall in danger. Finally, bed loads sedimentation down river changes the downstream morphology which creates sand. The first step in controlling the soil erosion and bed loads sediment is to calculate their amount in the required areas. Hence force, the aim of current research is to identify the status of Hormozgan Province Rivers in terms of the sediment process. Therefore, data of the hydrometrical stations from Persian Gulf and Oman ocean basin rivers, located in the province, was collected; then, their sediment amount in the local station calculated according to rating curve. In order to calculate the river sediment amount in the embouchure of sea, regional analysis approach applied. Various parameters such as to geological, methodological, topographic and land use were also taken into account in the regional analysis. Finally, SSY map of basins prepared. Comparison of statistical analysis (estimated sediment) with observed sediments values showed that four different factors, namely the overall length of waterway, area formation, annual rainfall and expert opinion, were highly related at the level of 9% and correlation coefficient of 0.79 realiability. The result implies that due to sensitive outcrops to the erosion and shooting rainfalls, Hormozgan region is highly capable of erosion and high sedimentation. The east part of the province, especially Gabrik and Sadij rivers, suffers from high sediment potentials. in terms of SSY, the east part of the province takes the second place and central region of province has moderate SSY.
کلیدواژه‌ها [English]
)