#introduction#

1. This software is applied to the integrated effectiveness evaluation of green of built-up region
2. Evaluation put the administrative unit as the basic unit.
3. The software consists of four modules:

• B1(ecological efficiency evaluation moudle),
• B2(economic effiency evaluation moudle),
• B3(social effectiveness evaluation moudle),
• B4(comprehensive efficiency evaluation moudle).

Urban Green Space comprehensive efficiency = Y1 * (Urban Green Space ecological efficiency) + Y2 * (Urban Green Space economical efficiency) + Y3 * (Urban Green Space social efficiency)

X1,X2,X3 are the weight of those three variables. They are often generated by AHP algorithm, the defaults is 0.4, 0.25,0.35. It also can be inputed bu users.

##ecological efficiency evaluation moudle## ###B1 = C1 + C2 + C3###

• B1: value of urban green space ecological efficiency.
• C1: value of maintaining carbon and oxygen balance.
• C2: value of ease air pollution.
• C3: value of storing and conserving water.
• C4: value of adjusting the climate.

####C1 = ( S * Qc * Tc + S * Qo2 * Po2 ) / 10000####

• S: the area of green in the researched location, unit is m^2.
• Qc: sequestration of unit region of green per year, default value is 0.625t/hm^2.
• Tc: Carbon tax, default value is 1024.125 RMB/t.
• Qo2: oxygen release of unit region of green per year, default value is 1.667 t/hm^2.
• Po2: price of industrial oxygen, default value is 650RMB/t.

####C2 = S * Q * Ft / 10000####

• S: the area of green in the researched location, unit is m^2.
• Q: unit region of green's ability of absorbing polluants per year.
• Ft: fee of pollution administration.

|| Community types || ability of absorb SO2(t/hm^2) || ability of absorb NOx(t/hm^2)|| ability of dust detention(t/hm^2) || || coniferous forest || 0.018|| 0.18 || 33.2 || || Mixed conifer and broadleaf || 0.152 || 0.263 || 21.65 || || broadleaf forest type || 0.087 || 0.345 || 10.11 ||

|| polluants || fee of administration(RMB/t) || || SO2 || 600 || || NOx || 420 || || dust || 170 ||

####C3 = R * ( P - E - C * P ) * S / 1000####

• S: the area of green in the researched location, unit is m^2.
• R: the price of residential water， default value is 4RMB/t.
• P: annual rainfall, default value is 1317.3mm.
• E: annual evaporation， default value is 697.44mm.
• C: runoff coefficient, default value is 0.2.

####C4 = S * T * W * p * t####

• S: the area of green in the researched location, unit is m^2.
• T: cooling degree of unit region of green, default value is 0.038℃/ m2
• W: air-conditioning power consumption per hour，default value is 0.012 KWh
• P: residential electricity prices, default value is 0.462RMB/KWh
• t: averaged consumption time of air-condition per year

##economic effiency evaluation moudle##

###B2 = X1 * D1 + X2 * D2 + X3 * D3### X1, X2, X3 are weights. You can set them by yourself

• D1: value of distance from green to park

####D1 = -0.054 * ∑ { ( Ci - C ) / C }####

Ci is the shortest distance from district to park

C is the averaged distance from district to park

• D2: the evaluation value of green's coverage

####D2 = 0.041 * ∑ { ( Li - L ) / L }####

Li is thr evaluation value of green's coverage of district

L is the averaged evaluation value of grenn's coverage of region

• D3: the evaluation value of green's scenery

####D3 = 0.047 * ∑ { ( Vi - V ) / V }####

Vi is the evaluation value of green's scenery V is the averaged evaluation value of green's scenery

##social effectiveness evaluation moudle##

###B3 = SA / A###

• SA: greens' total area
• A: total area of the region

asd

##comprehensive efficiency evaluation moudle##

###A1 = B1(normalized) + B2(normalized) + B3(normalized)###