Long-Term Simulated Atmospheric Nitrogen Deposition Alters Leaf and Fine Root Decomposition.

ABSTRACT: Atmospheric nitrogen deposition increases forest carbon sequestration across broad parts of the Northern Hemisphere. Slower organic matter decomposition and greater soil carbon accumulation could contribute to this increase in carbon sequestration. We investigated the effects of chronic simulated nitrogen deposition on leaf litter and fine root decomposition at four sugar maple (Acer saccharum)- dominated northern hardwood forests. At these sites, we previously observed that nitrogen additions increased soil organic carbon and altered litter chemistry. We conducted a 3-year decomposition study with litter bags. Litter production of leaves and fine roots were combined with decomposition dynamics to estimate how fine roots and leaf litter contribute to soil organic carbon. We found th

SUBMITTER: Xia M 

PROVIDER: S-EPMC6541405 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature