Three forested tracts, comprising a total of 1,200 ha, are sampled
every 10-30 years. Stand boundaries are located by ground survey
(1936) or aerial photography (1946 and later). Each stand ...
HFR004: Nitrogen is being added as ammonium nitrate at rates of 50 and
150 kg/ha-yr in oak-maple and red pine stands. Measurements include
nitrogen mineralization, litter decomposition, tree growth, ...
Plot level regeneration following the 1938 hurricane is measured at
Harvard Forest (since 1938) and at Pisgah (Winchester, New Hampshire,
since 1984). Measurements include tree species, DBH, ...
Trees will be pulled down to simulate hurricane damage in two
mixed hardwood plots: (1) 0.35 ha, September 1989; (2) 0.6 ha, September 1990.
In the first plot, the extent of damage, changes ...