The Radiation Characteristics of the Artifical Ecological Community of Robber-trees in Hainan Island

In this paper, by using the experimental data of two stations in Hainan Island in China in Mar, 1983 and Apr, 1984, the radiation characteristics of the artifical ecological community in different kind of rubber plantation have been analysed and the radiation conditions in rubber-trees, tropical secondary forest, tropical grassland and bare-land have been compared. Also, an empirical formula for calculating the net radiation by using solar radiation is given