Forest soil:atmosphere fluxes of carbon dioxide, nitrous oxide and methane at the Hubbard Brook Experimental Forest, 1997- present

Soil atmosphere fluxes of the trace gases; carbon dioxide (CO2),
nitrous oxide (N2O) and methane (CH4) have been measured at several
locations at the Hubbard Brook Experimental Forest (HBEF) including 1)
the “freeze” study reference plots that provide contrast between stands
dominated (80%) by sugar maple versus yellow birch and low and high
elevation areas, 2) the Bear Brook Watershed where trace gas sampling is
coordinated with long-term monitoring of microbial biomass and activity
and 3) watershed 1 where trace gas sampling locations were co-located
with long-term microbial biomass and activity monitoring sites that are
located near a subset of the lysimeter sites established for the calcium
addition study on this watershed.