Varying sensitivity of mountainous streamwater base-flow [Formula: see text]concentrations to N deposition in the northern suburbs of Tokyo.

ABSTRACT: Ecosystems of suburban landscapes (i.e., forest, inland water ecosystem) are threatened by high nitrogen (N) loadings derived from urban air pollutants. Forest ecosystems under high chronic N loadings tend to leach more N via streams. In the northern suburbs of Tokyo, N deposition loading on terrestrial ecosystems has increased over the past 30 years. In this region, we investigated nitrate concentrations in 608 independent small forested catchment water samples from northeastern suburbs of Tokyo. The nitrate concentrations varied from 0.07 to 3.31 mg-N L^-1 in this region. We evaluated the effects of N deposition and catchment properties (e.g., meteorological and topographic factors, vegetation and soil types) on nitrate concentrations. In the random forest model, simulated N de

SUBMITTER: Nishina K 

PROVIDER: S-EPMC5550466 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature