Abstract:Although most parts of landscape are arid or desert in the subtropics in the world, the subtropic region of South China is an exception, where monsoon evergreen broad leaf forest, the climax forest ecosystem in the region is conserved. Using field measurements from 1993 to 1999, we analyzed the spatial and temporal variations of some hydrological factors in this climax forest ecosystem. Main results are: (1) the average annual precipitation is 1910 mm, of which 80% is from wet seasons and 20% from dry seas...