Benefit of China's reduction in nitrogen oxides emission to natural ecosystems in East Asia with respect to critical load exceedance.

07:00 EST 11th January 2020 | BioPortfolio

Summary of "Benefit of China's reduction in nitrogen oxides emission to natural ecosystems in East Asia with respect to critical load exceedance."

The emission of nitrogen oxides (NO) in China decreased by 15% from 2010 to 2015 (without a significant decrease in NH emission), resulting in the decline of nitrogen (N) deposition in East Asia. Empirical N critical load exceedance was used to assess the benefit of the NO emission reduction in China to natural ecosystems in East Asia. Empirical N critical loads for major forest and grassland types in East Asia were assigned based on field manipulation experiments for N effects. The critical load map based on the minimum of the critical load range of each vegetation type showed that empirical critical loads were generally lower in the Tibetan Plateau and some parts of northeastern China (≤5 kgN·ha·a), and higher in northern and southern China (≥20 kgN·ha·a). Empirical critical loads were also low in some parts of central and northern Japan (≤5 kgN·ha·a) and the south Korean Peninsula (5-10 kgN·ha·a). As a benefit of NO emission reduction in China, N deposition in East Asia decreased significantly from 2010 to 2015. The total area and total amount of critical load exceedance in East Asia declined 4.6% and 14.3% respectively, suggesting great benefits to natural ecosystems.


Journal Details

This article was published in the following journal.

Name: Environment international
ISSN: 1873-6750
Pages: 105468


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