Spatial heterogeneity of soil organic carbon and total nitrogen in a monsoon evergreen broadleaf forest in Dinghushan, Guangdong, China. Characteristics of dominant tree species stem sap flow and their relationships with environmental factors in a mixed conifer-broadleaf forest in Dinghushan, Guangdong Province of South China. STUDY ON CANOPY STRUCTURE AND CANOPY RADIATION OF MONSOON EVERGREEN BROAD LEAF FOREST IN DINGHUSHAN BIOSPHERE RESERVE, GUANGDONG STUDIES ON THE BIO-MIASS,PRIMARY PRODUCTIVITY AND ENERGY USE EFFICIENCY OF THE MIXED FOREST COMMUNITY IN MT. DINGHUSHAN,CUANGDONG