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以不同密度巨尾桉人工林的林分结构各层次持水能力及其林地土壤持水能力和渗透性能为分析基础 ,来评价各林分水源涵养能力 ,结果表明 :不同密度的巨尾桉人工林其水源涵养能力存在显著差异 ,其中以密度为 1 32 5株 /hm2 的人工林为最佳 ,林分总持水量最大 ,为 1 70 .1 1t/hm2 ,林冠持水量和林地持水量也最大 ,分别为 1 4 .37t/hm2 和 1 5 5 .74t/hm2 。
Based on the analysis of the water-holding ability and the soil water-holding capacity and permeability of forest stand with different density of Eucalyptus grandis plantations, the water conservation capacity of each stand was evaluated. The results showed that: There were significant differences in water conservation capacity among forest types. Among them, plantations with a density of 1 32 5 plants / hm2 were the best, with the highest total water holding capacity of 1 70.1 1 t / hm2, and both canopy water holding capacity and woodland water holding capacity Maximum, respectively, 14.37t / hm2 and 15.574t / hm2.