نتایج جستجو برای: in highland watersheds

تعداد نتایج: 16977197  

Following the unbalanced development and overexploitation of the country's watersheds, land fragmentation has become a major concern for the conservation of ecosystem services and land health. For this purpose, the present study was planned to evaluate and compare the landscape connectivity indices of KoozehTopraghi Watershed as one of the ecologically susceptible watersheds located in Ardabil ...

Journal: :Journal of environmental quality 2007
X Wang A Saleh M W McBroom J R Williams L Yin

Hydrologic/water quality models are increasingly used to explore management and policy alternatives for managing water quality and quantity from intensive silvicultural practices with best management practices (BMPs) in forested watersheds due to the limited number of and cost of conducting watershed monitoring. The Agricultural Policy/Environmental eXtender (APEX) model was field-tested using ...

Journal: :Proceedings of the Water Environment Federation 2005

Journal: :Journal of Water and Health 2006

2017
Brian Buma Ben Livneh

Water is one of the most critical resources derived from natural systems. While it has long been recognized that forest disturbances like fire influence watershed streamflow characteristics, individual studies have reported conflicting results with some showing streamflow increases postdisturbance and others decreases, while other watersheds are insensitive to even large disturbance events. Cha...

2002
Bryan C. Pijanowski Bradley Shellito Snehal Pithadia Konstantinos Alexandridis

The Land Transformation Model (LTM), which has been developed to forecast urban-use changes in a grid-based geographical information system, was used to explore the consequences of future urban changes to the years 2020 and 2040 using non-urban sprawl and urban-sprawl trends. The model was executed over a large area containing nine of the major coastal watersheds of eastern Lake Michigan. We fo...

2013
Wen Zhang Takashi Oguchi Yuichi S. Hayakawa Hua Peng

The “Danxia landform” is an erosional landform type originally defined in China. It is characterized by redcolored sandstones and steep cliffs, and developed via long-term erosion. Detailed quantitative geomorphometric studies of the characteristics of Danxia landforms in China have not yet been conducted. Using GIS, we conducted DEM-based geomorphometric analyses of 42 watersheds on Mt. Danxia...

ژورنال: علوم آب و خاک 2016
امیدوار, ابراهیم, فلاح سورکی, مقدسه, کاویان, عطااله,

Prioritization of sub-watersheds is very important and necessary in order to implement soil and water conservation practices. This study has prioritized 13 sub-watersheds based on morphometric and land use characteristics using RS and GIS techniques in Haraz watershed to identify erosion-prone sub-watersheds. Morphometric characteristics including bifurcation ratio, drainage density, stream fre...

2014
Adugna Woyessa Wakgari Deressa Ahmed Ali Bernt Lindtjørn

BACKGROUND Despite the encroaching of endemic malaria to highland-fringe areas above 2000 meters above sea level in Ethiopia, there is limited information on ownership and use of mosquito nets for malaria prevention. Thus, this study was designed to assess long-lasting insecticidal nets (LLIN) possession and use for malaria prevention in highland-fringe of south-central Ethiopia. METHODS A mu...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید