Long-term variability in base cation, sulfur and nitrogen deposition and critical load exceedance of terrestrial ecosystems in China

W Zhao, Y Zhao, M Ma, M Chang, L Duan - Environmental Pollution, 2021 - Elsevier
The rapid development of China's industrial economy and implementation of air pollution
controls have led to great changes in sulfur (S), nitrogen (N) and base cation (BC) …

Machine learning and linear regression models to predict catchment‐level base cation weathering rates across the southern Appalachian Mountain region, USA

NA Povak, PF Hessburg, TC McDonnell… - Water Resources …, 2014 - Wiley Online Library
Accurate estimates of soil mineral weathering are required for regional critical load (CL)
modeling to identify ecosystems at risk of the deleterious effects from acidification. Within a …

Map** critical loads of nitrogen deposition for aquatic ecosystems in the Rocky Mountains, USA

L Nanus, DW Clow, JE Saros, VC Stephens… - Environmental …, 2012 - Elsevier
Spatially explicit estimates of critical loads of nitrogen (N) deposition (CLNdep) for nutrient
enrichment in aquatic ecosystems were developed for the Rocky Mountains, USA, using a …

Uncertainty in silicate mineral weathering rate estimates: source partitioning and policy implications

MN Futter, J Klaminder, RW Lucas… - Environmental …, 2012 - iopscience.iop.org
Precise and accurate estimates of silicate mineral weathering rates are crucial when setting
policy targets for long-term forest sustainability, critical load calculations and assessing …

Machine learning and hurdle models for improving regional predictions of stream water acid neutralizing capacity

NA Povak, PF Hessburg, KM Reynolds… - Water Resources …, 2013 - Wiley Online Library
In many industrialized regions of the world, atmospherically deposited sulfur derived from
industrial, nonpoint air pollution sources reduces stream water quality and results in acidic …

Steady-state sulfur critical loads and exceedances for protection of aquatic ecosystems in the US southern Appalachian Mountains

TC McDonnell, TJ Sullivan, PF Hessburg… - Journal of environmental …, 2014 - Elsevier
Atmospherically deposited sulfur (S) causes stream water acidification throughout the
eastern US Southern Appalachian Mountain (SAM) region. Acidification has been linked …

Protection of forest ecosystems in the eastern United States from elevated atmospheric deposition of sulfur and nitrogen: A comparison of steady-state and dynamic …

TC McDonnell, J Phelan, AF Talhelm, BJ Cosby… - Environmental …, 2023 - Elsevier
Critical loads (CLs) and target loads (TLs) of atmospheric deposition of sulfur (S) and
nitrogen (N) specify the thresholds of air pollution above which damage to ecosystems is …

Regionalization of soil base cation weathering for evaluating stream water acidification in the Appalachian Mountains, USA

TC McDonnell, BJ Cosby, TJ Sullivan - Environmental pollution, 2012 - Elsevier
Estimation of base cation supply from mineral weathering (BCw) is useful for watershed
research and management. Existing regional approaches for estimating BCw require …

Critical loads of acidity to protect and restore acid-sensitive streams in Virginia and West Virginia

TJ Sullivan, BJ Cosby, TC McDonnell, EM Porter… - Water, Air, & Soil …, 2012 - Springer
The purpose of the research described here is to apply a new approach for generating
aquatic critical load (CL) and exceedance calculations for an important acid-sensitive region …

Assessment of the maximum allowed acid deposition load at current stage in China

B Li, Z Wang, X Zhang - Journal of Environmental Sciences, 2017 - Elsevier
Soil acidification caused by acid deposition has been significant in some forests in southern
China. We present an approach for assessing the current stage maximum allowed load …