نوع مقاله : مقاله کامل علمی پژوهشی
نویسندگان
1 دانشگاه کشاورزی و منابع طبیعی گرگان
2 دانشگاه علوم کشاورزی و منابع طبیعی گرگان
3 دانشگاه علوم کشاورزی و منبع طبیعی گرگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Presently, evaluation of soil erosion and sediment yield is one of the challenging issues in watershed management. It is considered to be a concerning issue in the developing countries and thus access to accurate data is essential to measurement of soil erosion and sediment in watersheds for proper designing of soil conservation programs and determine ways to against erosion and reduce sediment. The natural resources degradation and soil erosion are the major problems in Golestan Province. The aim of this study was the investigation of sediment and runoff in experimental plots by using of natural rainfall in the three land uses, forest, planting and disturbed forest in Shastkalate watershed. Nine erosion experimental plots with 2×2 (m) size were installed in all three land uses. The results showed that in 1.7 to 14.4 (mm) precipitation, the amount of sediment were 0.007 to 19.95 (gr) in forest, 0.13 to 11.87 (gr) in planting and 0.26 to 43.94 (gr) in disturbed forest land uses. The amount of runoff varied from 0.23 to 25(l) in forest, 0.1 to 16.1 (l) in planting and 0.27 to 25 (l) in disturbed forest land uses.
Results showed that the forest degradation increased erosion and runoff 63.4 and 32% respectively and the amount of erosion and runoff decreased in planting land use 46.6 and 50.7%.
کلیدواژهها [English]