نتایج جستجو برای: شاخص unep
تعداد نتایج: 75001 فیلتر نتایج به سال:
مناطق خشک از نظر شکل اراضی، خاک، جامعۀ گیاهی و جانوری و منابع آب و اقلیم بسیار متنوع هستند. یکی از مؤلفههای معرف اقلیم، تعیین شاخصهای خشکی در هر منطقه است. اطلاع از دامنه و شدت خشکی، در مدیریت و برنامهریزی مناسب منابع طبیعی و پایداری زیستبوم (اکوسیستم) هر منطقه، بهویژه مناطق خشک مفید است. استفاده از روشهای گشتاورهای خطی و تحلیل خوشهای در تعیین مناطق همگن اقلیمی نقش مؤثری دارد. هدف اصلی...
The CMS Secretariat is circulating herewith, for the information of participants in the eighth meeting of the Conference of the Parties to the Convention, the publication entitled “Climate Change and Migratory Species” prepared and submitted to the Secretariat by the Department for Environment, Food and Rural Affairs of the United Kingdom. An executive summary of the latter in English, French a...
School of Biological & Biomedical Sciences, Durham University, Mountjoy Site, Durham DH1 3LE, UK, Met Office Hadley Centre, FitzRoy Road, Exeter, Devon EX1 3PB, UK, UNEP-WCMC, 219 Huntington Road, Cambridge, UK, Center for Macroecology, Evolution and Climate, Natural History Museum, University of Copenhagen, Copenhagen, Denmark, BirdLife International, Wellbrook Court, Girton, Cambridge CB3 0NA...
amalgam whenever possible, and environmental protection from dental materials use, including, obviously, impacts from Hg. A new general-purpose restorative material is needed as an amalgam alternative. This transition is reviewed from the point of view of international efforts at prevention, coordination of Hg management with a UNEP treaty, concern for adverse reactions from any treatments, and...
Atmospheric mercury can be considered a ‘hot topic’. The problem of global mercury pollution is a focus of several international conventions such as the UNEP mercury program and the UN-ECE Long-Range Transport of Atmospheric Pollution Convention Task Force on Hemispheric Transport of Air pollution (HTAP). Major scientific questions are the oxidization processes of elemental mercury, global and ...
VOLUME 114 | NUMBER 5 | May 2006 • Environmental Health Perspectives Pick up any newspaper or magazine these days and there will most likely be a prominent story about the environment and its relation to human health, well-being, or economic security. It seems that environmental sensitivity is moving from the fringe to center stage. No better confirmation can be found for this than the adoption...
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