CH4 Uptake by Forest Soils at two sites in the Northeastern US

Soil to atmosphere net CH4 fluxes were measured
at two different sites in order to assess the long term effects of
environmental change on soil CH4 uptake. This
data set includes samples collected between 1998-2016 at the Baltimore
Ecosystem Study, MD and Hubbard Brook Experimental Forest, NH from
2002-2015.

These data were assembled and are published here in support of the following paper:
Ni, X. and P.M. Groffman. 2018. Decines in methane uptake in forest soils. Proceedings of the
National Academies of Science of the United States of America: www.pnas.org/cgi/doi/10.1073/pnas.1807377115.

This datset is a derived from two datasets in this same repository:

Groffman P. 2017. Soil atmosphere fluxes of carbon dioxide, nitrous oxide and methane. Environmental Data Initiative. https://doi.org/10.6073/pasta/d2d727c9638c0fc23bd5be55a767cfb5

Groffman P. 2016. Forest soil:atmosphere fluxes of carbon dioxide, nitrous oxide and methane at the Hubbard Brook Experimental Forest, 1997- present. Environmental Data Initiative. https://doi.org/10.6073/pasta/9d017f1a32cba6788d968dc03632ee03.