Anion Mobility in Soils:Relevance to Nutrient Transport from Terrestrial to Aquatic Ecosystems.

摘要

Nutrient transport from terrestrial to aquatic ecosystems is strongly mediated by soil chemical interactions. Ions deposited on or biologically released within the soil can enter into a variety of exchange and precipitation reactions prior to (or instead of) entering aquatic ecosystems. This report reviews the current knowledge of soil anion adsorption reactions and their effects on leaching,and suggests a simple model,based on anion production and adsorption considerations,to predict and explain nutrient transport. The relationship of this approach to that based on cation production and adsorption is discussed.