Full text: Actes du Symposium International de la Commission VII de la Société Internationale de Photogrammétrie et Télédétection (Volume 1)

REMOTE MEASUREMENT OF SOIL ENVIRONMENT 
by 
B.V. VINOGRADOV 
Academy of Sciences 
Profsoyuznya 101-244 
Moscow 117279 
USSR 
Mathematical description of relations between soil features (humus 
content, soil moisture and salinity) and optical indicators in ana- 
lytical forms is realised for quantitative interpretation of aerial 
and space images. The equation of relation between spectral reflec- 
tance within 0.6-0.7 mm and humus content (h) is approximated with 
exponent function:p(h)spo*(90,-p, )exp(-kh), where P,-reflectance of 
parent subsoil without humus, p,-reflectance of high-humus soil. 
The equation of relation between spectral reflectance at the same 
spectral band and soil moisture (wo) is approximated with the sum 
functions - SXpOAeEt of terminal order and power ones: p(w, )=0 + 
+(P =p, ) exp(-ew, )+dw, , where P,-reflectance of dry soil, p,-reflec- 
tance of wet soil. Using this technology we derive a full transfer 
function from optical data on aerial and space images (D) throughout 
gpectral reflectance of soil surface (p) to humus content and moistu- 
re (hb ,w ) with gradations 1-2% and 2-4%, respectively. 
(See:B.V.Vinogradov'Space Methods in Natural Resources Studies" ,Mos- 
cow, Edition House"Mys1",1976,296p.; Remote Sensing Functions for 
Interpretation of Humidity from Aerial and Space Images.-Trudy Gosu- 
darstvennogo Gidrologitcheskogo Insitituta,Leningrad, y .285,1980, 
pp.13-24; Remote Sensing of Humus Content in Soils.-Potchvovedenie, 
Moscow, N 11,pp.114-123). 
661 
ai: MO d on QA QUEM m o oni pn M ee ee S 
  
  
  
  
  
  
  
  
  
  
  
 
	        
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