期刊
ENVIRONMENTAL POLLUTION
卷 149, 期 3, 页码 281-292出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2007.05.025
关键词
critical load; nitrogen; United States; forests; sulfur
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 critical acid load is termed exceedance. This study combined a simple mass balance equation with national-scale databases to estimate critical acid load and exceedance for forest soils at a 1-km(2) spatial resolution across the conterminous US. This study estimated that about 15% of US forest soils are in exceedance of their critical acid load by more than 250 eq ha(-1) yr(-1), including much of New England and West Virginia. Very few areas of exceedance were predicted in the western US. Published by Elsevier Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据