Critical loads for soils and freshwaters; a comparison methods at the Plynlimon catchments
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چکیده
منابع مشابه
on the comparison of keyword and semantic-context methods of learning new vocabulary meaning
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15 صفحه اولChemistry of streams draining grassland and forest catchments at Plynlimon, mid-Wales
The chemistry of streamwater, bulk precipitation, throughfall and soil waters has been studied for three years in two plantation forest and two moorland catchments in midWales. Na and CI are the major ions in streamwater reflecting the maritime influence on atmospheric inputs. In all streams, baseflow is characterised by high pH waters enriched in Ca, Mg, Si and HC03. Differences in baseflow ch...
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Estimates of critical acid loads and exceedances for forest soils across the conterminous United States.
Concern regarding the impacts of continued nitrogen and sulfur deposition on ecosystem health has prompted the development of critical acid load assessments for forest soils. A critical acid load is a quantitative estimate of exposure to one or more pollutants at or above which harmful acidification-related effects on sensitive elements of the environment occur. A pollutant load in excess of a ...
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ژورنال
عنوان ژورنال: Hydrology and Earth System Sciences
سال: 1997
ISSN: 1607-7938
DOI: 10.5194/hess-1-729-1997