University of Minnesota
University of Minnesota
College of Biological Sciences


Experiment 145 - Effects of Nitrogen Fertilization on Litter and Soil Decomposition

The influence of inorganic nitrogen (N) inputs on decomposition is poorly understood. Some prior studies suggest that N may reduce the decomposition of substrates with high concentrations of lignin via inhibitory effects on the activity of lignin-degrading enzymes, although such inhibition has not always been demonstrated. The purpose of E145 was to study the effects of nitrogen (N) addition on decomposition of seven substrates ranging in initial lignin concentrations (from 7.4 - 25.6%) over five years in eight different grassland and forest sites in central Minnesota.

Methods for e145


Dataset IDTitleRange of Years (# years with data)
agme145Bulk Density2018-2018 (1 year)
agne145Cumulative Microbial Respiration2011-2011 (1 year)
agoe145Daily Microbial Respiration2011-2011 (1 year)
cze145Extracellular enzyme2005-2005 (1 year)
agqe145Fine Root Biomass and Chemistry2011-2011 (1 year)
ahle145Global litter decomposition across nitrogen fertilization experiments2017-2017 (1 year)
agse145Gravimetric Soil Moisture2011-2011 (1 year)
agte145Gravimetric Soil MoistureSoil pH2011-2011 (1 year)
ldnde145Litter Decomposition and Nitrogen Dynamics2005-2005 (1 year)
agpe145Microbial Biomass2011-2011 (1 year)
agre145Soil CN2011-2011 (1 year)