所谓低碳经济,实际上是一个相对概念。人类社会在发展过程中所利用的能源虽有多种类型,但各种能源在释放单位能量过程中形成的二氧化碳的数量不同。与现阶段占能源消费结构主导地位的煤炭、石油等单位热值的碳排放量相比,天然气、风能、水电等的碳排放量则小得多。反过来讲,低碳经济的实质就是在单位碳排放 The so-called low-carbon economy is actually a relative concept. Although there are many types of energy used by human society in the development process, the amount of carbon dioxide formed by various energy sources during the release of unit energy varies. Compared with the carbon emissions of coal, oil and other units that make up the leading energy consumption structure at this stage, the carbon emissions of natural gas, wind energy, hydropower, etc. are much smaller. Conversely speaking, the essence of a low-carbon economy is the unit of carbon emissions