Debris flows pose severe hazards to communities in mountainous areas, often resulting in the loss of life and property. Helping debris-flow-prone communities delineate potential hazard zones provides local authorities with useful information for developing emergency plans and disaster management policies. In 2003, the Soil and Water Conservation Bureau of Taiwan proposed an empirical model to d...

It is difficult to accurately identify and manage the paths of nonpoint source (NPS) pollution in rural watersheds because their discharge patterns vary depending on season, region, agricultural characteristics. In this study, flow water quality during rainfall events were monitored Songya watershed, an impaired, area South Korea. A method identifying priority management areas was proposed thro...

Purpose Mercury (Hg) is a naturally occurring element and mately 80% of the anthropogenic sources of Hg are emissions of elemental Hg to air, primarily from fossil fuel combustion, mining, smelting, chlor-alkali plants, and from incineration of solid wastes (Hamasaki et al. 1995; Stein et al. 1996). Another 15% of anthropogenic Hg loading to the land is the result of direct application of ferti...

The water quality of the Dongjin River deteriorates during irrigation period because supply river maintenance to main is cut off by mass intake agricultural weirs located in midstream regions. A physics-based model and a data-driven were used predict under various hydrological conditions. Hydrological Simulation Program–Fortran (HSPF), which model, was constructed simulate biological oxygen dem...

سابقه و هدف: ورود گونه­­ های ماهی مهاجم دراکوسیستم ­های آبی، سبب بروز انواع اثرات منفی اکولوژیکی اقتصادی-اجتماعی می ­­شود. اولین گام در تجزیه تحلیل مخاطرات ناشی از گونه­ غیر­بومی، شناسایی خطر است بر این اساس ابزارهای متعددی برای ارزیابی خطرات تهاجمی غیربومی به منظور پشتیبانی تصمیم گیرندگان گونه ­­ها ایجاد شده است. هدف پژوهش قدرت تیلاپیای شکم قرمز (Coptodon zillii) حوضه آبریز تالاب شادگان (حوضه‌...