太阳是地球表层环境的主要能量来源,大量地质记录表明太阳辐射量变化引起地球环境的剧烈变化.人类能源消费是将地质历史时期储存的能量在较短时间内以热能形式释放出来,其实质相当于额外增加了太阳辐射量.本文以太阳辐射变化为纽带,将当前世界能源消费总量与引起地球环境剧烈变化的太阳辐射变化量(△TSI)进行比较,发现当前人类能源消费总量已约占十到百年尺度地球表面接收太阳辐射变化量的1/2,以地球陆地面积计算,当前人类释放的化石太阳能已与太阳辐射十年尺度变化量相当.如果太阳辐射变化可以直接引起气候变化,那么,当前由于人类能源消费而快速释放的热能也可能直接引起地球(尤其是陆地)的增温.提出地表能量平衡的“贮水池效应”.除了考虑温室气体变化引起的能量向系统外逃选效率高低变化外,还应考虑能量输入增减对地袁能量平衡的作用. “,”According to the law of conservation of energy, the authors calculated the total heat release of world primary energy consumption (WPEC) and its power. The result shows that the power of WPEC is about 1.50 * 10^13 Joule. Compared with the variation of the solar irradiation reached to the earth surface ( △TSI), this value is close to the ATSI on decadal scale that cause the climate change significantly. We therefore propose a mechanism of cistern effect to interpret the current global warming. Besides the effect of greenhouse gases, the direct input of energy ( heat release) to the climatic system should be well considered when the reason of global warming is discussed.