森林生态系统是地球上主要生态系统之一。据统计,地球上每年光合作用“净产量”1,640亿吨干物质中,三分之二在陆地上,其中绝大部分是森林的同化产物。在具有高度结构体系的森林生态系统中,周而复始地进行着物质循环,同时伴随着能量的流动。森林生态系统中的能量流,是指太阳辐射能被森林生态系统吸收、固定、转化与消耗的理化过程以及能量收支状况。它直接影响到森林生态系统的结构、演替和生产力。研究森林生态系统的能量流动规律,在理 Forest ecosystems are one of the major ecosystems on Earth. According to statistics, two thirds of the 164 billion tons of dry matter “photosynthesis” per year on photosynthesis is on land, most of which are the assimilation products of forests. In a highly structural system of forest ecosystems, the material cycle takes place cyclically, with the accompanying flow of energy. The energy flow in forest ecosystem refers to the physical and chemical process of solar radiation absorbed, fixed, transformed and consumed by the forest ecosystem as well as the energy budget. It directly affects the structure, succession and productivity of forest ecosystems. Study the law of energy flow in forest ecosystems