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太阳辐射是地球上一切生物环境热量的基本来源。生物环境热量是生物接收的辐射热量。由于太阳辐射的直接测定记录少,也由于测定辐射不如测定温度简便,所以一般都用温度来反映热量。“积温”是给定时期内一定温度的总和。将温度累加是气候统计中的一种方法,用积温做为气候参数是可以的。积温是对大范围气侯作描述的一个统计量,积温作为热量指标是对较大范围气候鉴定的一个很粗糙的物理学指标。积温应用于生物学研
Solar radiation is the basic source of heat for all biological environments on Earth. Bio-environment Heat is the amount of radiant heat that a living organism receives. Due to the direct measurement of solar radiation less records, but also because the measured radiation is not as easy as the determination of temperature, so the temperature is generally used to reflect the heat. “Accumulated temperature ” is the sum of certain temperatures over a given period of time. Accumulating temperature is one of the methods used in climate statistics. It is possible to use the accumulated temperature as the climatic parameter. The accumulated temperature is a statistical description of a wide range of climates. The accumulation of temperature as a thermal indicator is a very rough physical indicator for the identification of a wide range of climates. Accumulated temperature used in biological research