taking place. That is why the mere estima- 
tion of the greening ecological environ- 
ment effect of a certain area  unavoidable 
has limination and one-sideness. In order 
to make the quantization assessment and 
analysis of greening quality more complete 
and to enable the above mentioned  experi- 
mental value of micro greening ecology 
effect to be used on a large scale so as 
to make the estimation of greening ecology 
effect and economic output be available 
for the whole city. We,on the basis of the 
2-D greening statistical quantity, carry 
out the investigation of the three  dimen- 
tional quantity , i.e. green biological 
quantity (GBQ), and establish the 3-D  GBQ 
information library... dt will provide 
reliable basis for further rational  pre- 
paration of greening plan,correct analysis 
of the relative relation between urban 
greening and ecology environment and 
quantization assessment of economic output 
and environment effect of greening. 
l. Collection of tree variety sample and 
establishment of GBQ model 
In order to establish the interpretation 
mark of tree variety and explore the rela- 
tive relation between the the crown diame- 
ter, hight and volume, we actually collect 
the sample value of 50 types of arbor and 
bush.In each type,we collect 40-50 samples 
from different areas of the city. The 
sample value of each sample includes hight 
and diameter of stock and crown,  etc.. 
Regression analysis is done by the  compu- 
ter according to these sample value. In 
analysis, we find that in the  caculation 
equation of the crown volume, the crown- 
hight and crown-diameter are two dependent 
parameter. That is, when the variety is 
determined, crown-diameter and crown-hight 
have certain relative relation, As long as 
one is known, the other can be caculated 
by this equation. This makes it possible 
for us to simplify the measurement of 3-D 
quantity so that it may be done on the 2-D 
Plane. According to this idea, we continue 
  
the regression caculation to. get the 
relative relations of crown-diameter to 
volume of many types of arbor and bush. In 
this way, after interpreting the tree 
variety and number of plants on the photo, 
we may caculated the GBQ.For excample the 
following is the ‚relative equation of 
crown-diameter (D) to crown-volume (V) of 
cinnamon  caphora in Shanghai, which is 
established on the basis of the regres- 
sion of sample value of 50 samples. 
y. 103.01. D.-. 555.17 
According to the analysing result of 
actual samples, with the principle of not 
only making tree variety have universal 
nature, but also making it easy to inter- 
pret the aerial photo and to code, we 
divide the greening plant varieties into 
14 catagories. Then we combine the  equa- 
tions of these 14 categories and the 
inquiry program with the three codes of 
the number of trees, crown-diameter and 
tree variety as the indix, that is, esta- 
blish the so-called function block of GBQ 
statistical model. The function block is 
the core of the GBQ information library, 
the quality of the block is vital to the 
accuracy of GBQ statistics. 
2. Establishment of GBQ information lib- 
rary and output function 
The basic form of the GBQ information 
library is still mainly grid type . The 
basic map to establish the Library is 
subregional 1:5000 £reening present 
situation map. On this map, the … grid of 
lemxlcm (actually 50mx50m) is drawn out 
as the basic unit to collect . data. The 
coding method, file form and structure of 
this library are exactly the same as 
those of the 2-D GOR data . library... This 
will ficialitate the interchangeable 
visit between the two libraries, relative 
analysis and image overlapping. It. can 
also avoid certain unnecessary repeat 
work. 
  
GBQ sample value 
  
in the 1:5000 greening present 
  
& actual survey of aeria 
feet collection) actually fulfilling tree variety 3-D quantity measurement 
S p 
ituation map 
  
hoto of parks and major 
  
Scenic spots 
  
Y 
regression analysis 
to establish equa- 
tion of C-V 
  
interpretation of tree variety, 
measurement of crown-diameter, 
statistics of number of plants 
from the aerial photoes 
  
  
  
GBQ statistics & chart of 
tree variety of parks and 
major scenic spots 
  
  
  
Function block of 
GBQ statistical 
model 
1 
computer 
GBQ 
information 
libr 
ary 
  
  
[Coding chart of GBQ information] E 
  
  
estimation of 
economic output 
& ananlysis of 
social effect 
  
mature conditions 
  
  
  
  
GBQ statistics value by areas & by class 
Hierarchical GBQ map 
Classification chart of tree variety & 
Lawn distribution chart 
  
relative analysis 
between ecology 
environment & GBQ 
  
  
  
  
  
  
Fig. 4 Frame-diagram of the 
establishing the 3-D GBQ information library 
742 
working procedure of