尾巨桉和厚荚相思人工林水源涵养功能研究  

Water Conservation Effects of Eucalyptus urophylla×E.grandis and Acacia crassicarpa Plantations

作　　者：罗柳娟[1] 韦理电 何斌[1] 蒙春江 梁丽虹[2] 刘红英[1] 刘莉[1] 覃祚玉[1] 

机构地区：[1]广西大学林学院,广西南宁530004 [2]广西环江县华山林场,广西环江547106

出　　处：《华南农业大学学报》2012年第2期220-224,共5页Journal of South China Agricultural University

基　　金：国家自然科学基金(31160152;40861025);广西重大林业科技项目(桂林科字[2010]第6号);国家林业局中南速生材繁育重点开放性实验室开放课题基金(ZR[2009]-02);广西大学实验室建设与实验教学项目(20111602)

摘　　要：为了了解尾巨桉Eucalyptus urophylla×E.grandis和厚荚相思Acacia crassicarpa人工林的水源涵养功能,对相似立地条件下尾巨桉和厚荚相思人工林的林冠层、林下植被层、枯枝落叶层和林地土壤的贮水性能进行比较分析.结果表明,尾巨桉和厚荚相思人工林林分不同结构层次的持水量大小顺序均为土壤层(0～40 cm)>枯枝落叶层>林冠层>林下植被层,厚荚相思人工林林冠层、枯枝落叶层和土壤层的持水量及渗透性能均高于巨尾桉,但林下植被层则呈相反趋势.尾巨桉和厚荚相思人工林的林分总持水量分别为1 852.82和1917.72 t/hm2,林分单位面积水源涵养总价值分别为1 241.39和1 284.87元/hm2.In order to investigate the water conservation effects of Eucalyptus urophylla×E.grandis and Acacia crassicarpa plantations,plots with similar stand conditions were selected,and comparative studies were made on water-holding capacity of canopy,vegetation layer under canopy,litter layer and soil.Results showed that water-holding capacity in different layers of two different plantations were in the order of soil layerlitter layercanopyvegetation layer under canopy.The water-holding capacity of canopy,litter layer,and the water-holding capacity of soil were in the order of A.crasscarpa plantationE.urophylla×E.grandis plantations,but the water-holding capacity of layer under canopy was just the opposite.The total water-storage capacity both above ground and soil in E.urophylla× E.grandis and A.crasscarpa plantation were 1 852.82 and 1 917.72 t/hm2 respectively,and the total value of water conservation for the two plantations were 1 241.39 and 1 284.87 yuan/hm2,respectively.

关 键 词：尾巨桉 厚荚相思 人工林 水源涵养功能 

分 类 号：S714.7[农业科学—林学]