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在全国煤层气资源评价中,将煤层气资源划分为探明储量、控制储量、预测储量和远景资源量.全国共获得可采煤层中风化带以下煤层甲烷含量大于或等于4 M 3 /T 、埋深2 000 M 以浅的煤层气资源量为14 .336 944*101 2 M 3 :其中预测储量9 675 .10 *108 M 3 , 远景资源量13 .369 434 *101 2 M 3 .全国有35 个目标区的资源丰度大于1 .5 *108 M 3/K M 2 ,有49 个目标区的资源丰度介于(0 .5 ~1 .5) *108 M 3 /KM 2 之间,有31 个目标区的资源丰度小于0 .5 *108 M 3/K M 2 .埋深小于1 500 M 的煤层气资源量9 .256 078 *108 M 3 ,埋深1 500 ~2 000 M 的煤层气资源量5 .080 866 *108 M 3 .全国有煤层气资源量大于1 000 *108 M 3 的大型目标区28 个,煤层气资源量介于(200 ~1 000)*108 M 3 之间的中型目标区28 个,煤层气资源量小于200 *108 M 3 的小型目标区59 个.“,”In China,the coal bed gas resources were classified as the proved reserves,controlled reserves,forecast reserves and prospective resources in coal bed gas resource evaluation.The total amount of the coal bed gas resources under the weathered zone in the recoverable coal seams with burial depths of less than 2 000 m is 14 336.944 billion m 3 in China,the coal bed methane content being equal to or higher than 4 m 3/t.In which,there are 967.51 billion m 3 of forecast reserves and 13 369.434 billion m 3 of prospective reserves.In China there are 35,49 and 31 target areas which resource abundances are more than 150,between 150 and 50,and less than 50 million m 3/km 2 respectively.The coal bed gas resource extent with burial depths of less than 1 500 m is 925.607 8 million m 3 and that with burial depths between 1 500 m and 2 000 m is 508.086 6 million m 3.In China there are 28 large scale,28 medium scale and 59 small scale target areas which coal bed gas resources are more than 100 000,between 100 000 and 20 000,and less than 20 000 million m 3 respectively.