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日本的吉良龙夫将生物的生活现象归结于一系列的化学反应。他认为植物要完成开花、结实等生活过程,就需要积累一定量的物质,消耗一定的能量。严格讲,植物的生长和同化、呼吸、蒸腾等基础生理作用的强度,与温度之间存在着近似直线关系的指数曲线,即与温度成正比植物的生活作用为温度所左右。为研究温度与树种分布的关系,吉良曾提出一个新的计算简便的积温指标——温暖指数。这个指数的定义为:一年中月平均温度
Japan’s Yoshio Ryuuji attributes biological phenomena to a series of chemical reactions. He believes that to complete the flowering plants, plants and other life processes, you need to accumulate a certain amount of material, consume a certain amount of energy. Strictly speaking, plant growth and assimilation, respiration, transpiration and other basic physiological effects of intensity, and the temperature there is an approximate linear relationship between the exponential curve, that is proportional to the temperature of the life of the role of plants as temperature. In order to study the relationship between temperature and the distribution of tree species, Ji Liang proposed a new easy-to-calculate integrated temperature index - the warmth index. The index is defined as the average temperature of the year