Litter respiration and soil respiration were measured in a tropical mountain rain forest in Jianfengling,Hainan Island.The results were as follows:diurnal changes in soil respiration in virgin forest showed multi-peaks and the highest peak appeared at 8:00.Respiration and temperature of soil both reached lower peaks at 12:00 and during 4:00～6:00 respectively,with a mean respiratory rate of 10.7μmol·m -2·s -1.In regeneration forest,respiratory rates of soil reached peaks with a mean value of 14.8μmol·m...