Remote sensing model of 3-dimensional green biomass（hereinafter refer-red to as“3-biomass”）and the estimation of environmental benefits of greenerythe author ohtains several major breakthroughs:（1）putting forward the conceptof 3-biomass and further perfecting the quantitative index system of urban greene-ry;（2）successfully correcting“Logistic curve”equation

while the 3-biomass throu-ghout Shanghai municipality has been measured and caculated in terms of the me-thod of simulating the stereo quantity by the plane quantity

which not only savesthe manpower

&

material resources

but also increases the accuracy;（3）putting for-ward the concept of mode forest and measuring the standard conversion quantitiesrequired in estimating the benefits of greenery environment in terms of 3-biomass;（4）by means of 3-biomass

etimating the environmental benefits of the whole cityfor the first time

e.g.absorbing carbon and producing oxygen

absorbing SO

2

andstagnating dusts and lowering the temperature in summer due to green community.Obtaining the value of 3-biomass not only helps the estimation of the environmen-tal benefits of greenery

but also promotes us to analyze the rationality of the pre-sent greenery community and provides the important technical base for the plan ofthe whole city via the estimation of this benefit.