China will intensify its efforts to explore for shale gas to help restructure the country＇s energy supplies and fuel its economic growth, according to the Ministry of Land and Resources. The ministry＇s latest survey shows that the country has 25.08 trillion cubic meters of explorable shale gas reserves （excluding Qinghai and Tibet）. More than 420 researchers from oil companies, colleges and geological exploration agencies and research institutions participated in the survey.