前言海南岛尖峰岭、坝王岭、吊罗山等林区由于多年大面积强度采伐,引起光热突变,水土流失。水热失去平衡后,不仅改变了小气候状况,也影响到区域性气候。比如林区伐前河流常年有水,伐后河水大量减少以致干涸,影响了农业生产。采伐迹地遭致人为反复破坏变成荒山。有的造了林生长不良、生态环境改变给恢复森林造成困难。世界上热带地区也有类似情况,亚马逊河原始林区主要在巴西境内,是世界上最大的热 Foreword Hainan Island Jianfengling, Dam Wang Ling, Diaoluoshan and other forest areas due to years of large-scale intensive logging, causing sudden light and heat, soil erosion. When water and heat are out of balance, they not only change the microclimate but also affect the regional climate. For example, there are perennial water in forested rivers in the forest area, and a great deal of river water is reduced or even dried up after logging, affecting agricultural production. Deforestation caused by repeated human destruction into barren hills. Some made the poor growth of the forest, the ecological environment changes to the restoration of the forest caused difficulties. A similar situation is also found in the tropical regions of the world, where the pristine Amazonian forests are predominantly in Brazil and the largest in the world