نتایج جستجو برای: watershed protection

تعداد نتایج: 195570  

2011
Gary Locke Jane Lubchenco David Kennedy Russell Callender

Mention of trade names or commercial products does not constitute endorsement or recommendation for their use by the United States government. The Chesapeake Bay is the largest estuary in the United States. It is a unique and valuable national treasure because of its ecological, recreational, economic and cultural benefits. The problems facing the Bay are well known and extensively documented, ...

2006
S. Vishnudas H. H. G. Savenije P. Van der Zaag

This paper presents the results of a field experiment conducted in Kerala, South India, to test the effectiveness of coir geotextiles for embankment protection. The results reveal that treatment with geotextile in combination with grass is an effective eco-hydrological measure to protect steep slopes from erosion. In the context of sustainable watershed management, coir is a cheap and locally a...

2010
Katharine R.E. Sims

Protected areas are a key tool for conservation policy but their economic impacts are not well understood. This paper presents new evidence about the local effects of strictly protected areas in Thailand, combining data on socioeconomic outcomes from a poverty mapping study with satellite-based estimates of forest cover. The selective placement of protected areas is addressed by controlling for...

قدرتی, علیرضا, نظامی, محمد طاهر,

Generally the negative affects of any component part of a Watershed can evaluate in the intensity of its produced sediment and erosion. In any basin, the erosion amount is more than sediments, becase of eroded materials in the basin due to natural sedimentary traps. Therefore it is necessary to detemine the relationship between coefficent of sedimentation and physical parameters of any basin fo...

2005
Leslie M. Reid

Federal and state legislation, such as the National Environmental Policy Act and the California Environmental Quality Act, require that responsible agency staff consider the cumulative impacts of proposed activities before permits are issued for certain kinds of public or private projects. The Council on Environmental Quality (CEQ 1997) defined a cumulative impact as “...the impact on the envir...

2012
Zareena Begum Anindita Chakrabarti

Arsenic contamination in water supplies continues to increase in many countries, especially in developing nations, thereby creating both environmental and health hazard. Its sources and effects are multiple and diffused in nature and it requires detailed assessment and policy. This paper discusses the global extent of the problem, its sources and effects and explores different policy options. S...

2013
Richard H. Moore

In 003 the US Environmental Protection Agency (USEPA) created a Water Quality Trading Policy consistent with the Clean Water Act of 97 . Building on the successes of the National Pollutant Discharge Elimination System (NPDES) permit program to address point-source discharges and the Total Maximum Daily Load (TMDL) program, which established watershed pollution loads, water-quality trading was c...

2004
E. Banzhaf

The international urban environmental partnerships focus on brownfields redevelopment, smart growth, sustainable transportation and land use, urban watershed management, green buildings, and solid waste recycling (U.S. Environmental Protection Agency = EPA http://www.epa.gov/swerosps/bf/accomp2.htm). The emphasis of this project is a kick-off to detect this specific land use, i.e. brownfields, ...

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