Abstract
Maintaining public green sites in urban area produces large quantities of biomass resources in the form of waste wood and grass. Their characteristics (moisture content, ash content, constituent element ratio, higher heating value and lower heating value) were measured to get helpful information to select an appropriate disposal method for prevention of global warming. The moisture contents of waste woods and grasses were in a wide range, it was guessed that the time elapsing from cutting to collecting strongly affected their moisture content. The importance of selecting an appropriate disposal method based on the real characteristics was pointed out.
