海南岛热带雨林滑坡致灾因素分析

Factors of Leading to Hainan Tropical Rainforests Landslide

从地形地貌、降雨和蒸发以及人类工程活动等方面分析和总结了引发滑坡的因素,研究发现:海南岛中高周低的环形阶梯结构的独特地形地貌是滑坡发生的必要因素;较大年平均降雨量和蒸发量以及海南红粘土在强降雨和蒸发下所产生的裂缝是滑坡发生的诱导因素;大量种植经济作物和开挖山体等频繁的人类工程活动是滑坡发生的直接因素.

Based on topography,rainfall and evaporation,and human engineering activities,etc.,the factors triggering landslides were analyzed and summarized. The results indicated that the unique topography of ring ladder structure of Hainan Island,in which the central region is higher and around is lower,was the necessary factor of landslides; the induction factors of landslide were the heavy average annual rainfall and evaporation capacity,red clay leading to cracks in Hainan under the heavy rainfall and evaporation; the direct factors of landslide included the planting of a large number of economic crops and the engineering activities such as the excavation of the mountains.