›› 1986, Vol. 6 ›› Issue (1): 23-29.

• 论文 • 上一篇    下一篇

再谈小良热带人工林与地下水的关系

刘瑞华   

  1. 广州地理研究所
  • 出版日期:1986-01-30 发布日期:1986-01-30

MORE ON THE RELATIONSHIP BETiIIOEEN TROPICAL REFORESTATION AND GROUND WATER IN XlAOLIANG, GUANGDONG

LIU Rinhua   

  1. Guangzhou Institute of Geography
  • Online:1986-01-30 Published:1986-01-30

摘要: 研究森林的地下水是研究整个森林水文作用过程的不可缺少的重要部分,仅从不同林地地下水的富水程度去说明热带人工林与地下水的关系,显然是很不深入的.本文根据在小良地区所做的小径流试验、水分下渗量的计算、淹水型水分下渗仪观测、土壤孔隙度测定和土壤粒度分析等结果,分析不同人工林在径流、水分下渗性能、土壤透水性等方面的差异,说明混交林具有良好的储水性能,桉树纯林则比较差,亟需改造或更新.

Abstract: The ground water recharge process in forest is mainly affected by the forest regime.Observational data and field test results show further that different types ef a.rtificial forests (eucalyptus forest or mixed broad leaf forest) may change the hydrogeologic condition in forest land. Although soils in the mixed forest and in the eucalyptus forest ate same, but the groundwater sources is rich in mixed forest and poor in eucalyputs forest. As a matter of fact, the percolation intensity of surface water is larger, the penetrability of shallow soil layer is good, so the ground water table is high and there is abundant ground water in the mixed forest.Compared with mixed forest, the eucalyptus forest is characterized as lamer water dissipation, bare and dry forest land, stronger surface runoff and weak water percolation as well as unfavourable supply of phreatic water. Thus it is difficult to form an exquisite forest environment under the eucalyptuses in Xiaoliang.