The index of Risk Frequency (RF) and other relative indices are used to analyze the temporal and spatial patterns of environmental riskevents in the past 30 years in Shenyang city. The results show th
This paper tries to present another theoretical view in the study of population geography by applying the principle of artificial neural network.It is our view that the approach to population geograph
Based on defition of desertification in Intematonal Convention toCombat Desertfication. and on Chinas situation, desenification is found notonly In and and senuand ropons but also in huAnd and subhunu
The method to determine the surface albedo using satellite date hasbeen developed and discussed. The relatons betwam the planetary albedo andsurfoce albedo in clear skies are derived with the help