Table 8 » The Selected Independent Variable and Their Seatistics of 
Volume Equation 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
sensor independent variable 
R2 |F-value| prob 
multispectral MSSgs MSS10 age 
scanner 1.86|0.0474| 13.12) 0.0006| 87.27, 0.0001| 0.614| 36.08, 0.0001 
SPOT HRV XS, XS; age 
1.74 0.0404] | 2.16: 0.0453| 97.25| 0.0001 0.577 33.12{ 0.0001 
Landsat- TM; age (co)? 
TM 4.90| 0.0277| 66.69| 0.0001| 9.21|0.0033| 0.621} 41.00| 0.0001 
CONCLUSION 
The findings of this paper were as follows : (1) The 
crown closure equations that were established by three 
remotely sensed data were eligible. Among the three 
equations, the equation which was developed by 
Landsat-TM data was the best, The airborne 
multispectral scanning data the second, the SPOT HRV 
data the third. (2) The volume equations that were 
established by three remotely sensed data were not 
cligible. Another parameters such as tree ages and 
crown closures should be added. Especially the age 
factor was much more effectively. (3) On the crown 
closure and stand volume equation establishment, three 
independent variables were enough, no more variables 
were needed. 
REFRENCE 
Chiao, Kuo-mu, Chen-ling Cauo, 1992, A Study on 
Using Spectral Reflectance to Estimate Forest Crown 
Closure, Quart.J.Expt. Forest, NTUG(4) : 149-176 
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International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996 
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