A large number of soils, worldwide, are acid (normally pH< 5.5) and suffering from on-going
soil acidification. Acid soils or soils undergoing acidification generally have low fertility and …

Climate change and anthropogenic nitrogen deposition are both important ecological
threats. Evaluating their cumulative effects provides a more holistic view of ecosystem …

South China has been experiencing very high rate of acid deposition and severe soil
acidification in recent decades, which has been proposed to exacerbate the regional …

Decreasing trends in acidic deposition levels over the past several decades have led to
partial chemical recovery of surface waters. However, depletion of soil Ca from acidic …

Acid deposition arising from sulphur (S) and nitrogen (N) emissions from fossil fuel
combustion and agriculture has contributed to the acidification of terrestrial ecosystems in …

Atmospheric nitrogen (N) and sulfur (S) deposition can significantly affect forest biodiversity
and production by altering the growth and survival of trees. Three decades of air quality …

We summarize past examples of the use of science to document the effectiveness of policy
in air quality management. Our goal is to inform public discourse amidst attempts to negate …

Abstract Sugar maple (Acer saccharum Marshall) growth in the species' southern range has
been declining since the 1980s, putting at risk a variety of ecosystem services that the …

Soil acidification is a major environmental issue associated with intensive agricultural land
use. Rapid urbanization has inevitably caused great changes in agricultural land use …

Atmospheric nitrogen and sulfur pollution increased over much of the United States during
the twentieth century from fossil fuel combustion and industrial agriculture. Despite recent …