THE SUMMARY REPORT FOR STUDIES ON THE TROPICAL FOREST ECOSYSTEM IN JIANFENGLING REGION,HAINAN ISLAND I.BIOLOGICAL GENE POOL I.ECOLOGICAL SERIES

This paper summarized the multidiscipline and comprehensive research on the tropical forest ecosystem in Jianfengling region, Hainan Island, during 1979-1986. The background investigation, permanent observation plots and experimental plots have been adopted. The paper consists of 7 parts:the biological gene pool in northern edge of world tropic;ecological series strudy;water and heat regime of tropical forest;nutrient cycling in tropical forest;ecological consequence of shifting cultivation;and regeneration and succession after afforestation. There are 1668 plant species of 798 genus, 198 families more than 4000 identified insect species of 26 orders and 260 species of identified macro-fungi. The ecological series from seashore to mountain top consisted of xerophytic thorn shrub, savanna, tropical semideciduous monsoon forest, tropical evergreen monsoon forest, tropical mountain rain forest and mossy forest have been studied by means of comprehensive and comparative description.