Desert ecology and taiga ecology and BC oil ecology will generate floor surface oil

Sky ecology and hell ecology will not generate any oil

For the ecology of desert and coniferous forests, as well as other types of deserts, wasteland, forests, and snowfields.

The probability of other ecological oil fields is 0.1%, the probability of China Oilfield is 0.3%, and the probability of the small oil field (petroleum lake) is 2%

For BC oil ecology, the probability of large oil fields is 4%, the probability of China Oilfield is 12%, and the probability of small oil fields (petroleum lake) is 80%

BC will replace 20%of the marine ecology and 30%of the desert ecology into BC's oil ecosystem when generating in the world. The BC oil ecology is no different from the original ecology except that the amount of oil is large.The frequency of ecology and ordinary ecology is larger than in the ocean

(Refer to Oilpopulate.java and biomegenoidESErt.java and Biomegenoilocean.java in BC Source Code)

Ocean oil ecological seeds: -5780164992240779686, coordinates: -698,1690