Weng's Life Cycle" is suitable for the description and prediction of the finite system of life amount

and its curve coincides to the increase curve of China's proved natural gas reserves."Weng's Cycle"could be used to describe and predict oil and gas reserves.As oil and gas are non-regenerated resources

the results indicates that the peak period of gas reserve increase will be 2011～2024 A.D.

and the fina amount of proved gas resources will be 11.5 ×10

12

～23.0 × 10

12

m

3

.