【摘要】 本文从森林的截留、地表径流、地面侵蚀等方面,以窿缘桉纯林和由多树种组成的阔叶混交林为研究对象,分析了华南热带水土保持林的水文效应。观测和试验结果表明,无论是涵蓄水源或是防止土壤侵蚀,纯桉树林都不如混交林的效果显著。因此,华南热带水土保持林的方向应是发展混交林,改造纯桉树林。更多还原

【Abstract】 Taking the pure forest of bendo eucalyptus (eucalyptus exserta)and the mixedforest composed of many kinds of broadleaf trees as the subject for study,the paper analyses the hydrologic effect of the forest for soil and water conservation in tropical zone of the South China from the aspects of precipitation interception of the forest,the runoff and erosion on land surface and so on. The observed data and experimental results indicate that the effect of pure bendo eucalyptus forest on conserving water or preventing the soil from erosion is less obvious than that of the mixed forest.So in tropical zone of the South China,mixed forest should be developed by transforming the pure bendo eucalyptus forest in soil and water conservation work.更多还原