杉木采伐迹地改植尾巨桉后对土壤水分及物理性质的影响  

Effects of soil hydrology and physical properties in Eucalyptus grandis ×E.urophylla forest land after Cunninghamia Lanceolata trees were cut

作　　者：黄承标[1] 刘运华 黄丹 陈桂金 黄光银 李保平[1] 

机构地区：[1]广西大学林学院,广西南宁530005 [2]广西高峰林场,广西南宁530001 [3]广西南宁市绿化工程管理处,广西南宁530011

出　　处：《生态环境学报》2009年第2期638-642,共5页Ecology and Environmental Sciences

基　　金：广西“十五”林科字资助项目

摘　　要：以厚荚相思林和灌草坡自然恢复植被为对照,研究了尾巨桉人工林随着植被恢复过程对土壤水分及物理性质的影响。结果表明:(1)尾巨桉林地在连续晴天和连续雨天情况下土壤(0～80cm土层)平均含水率依次为18.33%～22.69%和22.29%～26.66%,分别比厚荚相思林和灌草坡减少1.0%～18.1%;(2)尾巨桉林地(0-1m)平均土壤渗透速度为2.72～10.56mm·min-1,比灌草坡增加2.5%～7.1%,而比厚荚相思林减少6.5%～25.4%;(3)尾巨桉林地(0～1m)平均土壤容重为1.219～1.499g·cm-3,比灌草坡下降0.6%～2.6%,而比厚荚相思林增大0.8%～2.5%;(4)尾巨桉林地((0～1m)土壤非毛管孔隙度、毛管孔隙度和总孔隙度依次为8.3%～12.8%、33.2%～36.0%和43.2%～46.0%,比灌草坡提高1.6%～2.4%,而比厚荚相思林降低1.5%～3.2%;(5)尾巨桉林地(0-1m)土壤最大持水量、毛管持水量及最小持水量依次为433.30mm、347.44mm和253.14mm,分别比灌草坡和厚荚相思林降低1.5%～3.3%;(6)尾巨桉林地(0～1m)土壤有效贮水量为265.6mm,比灌草坡和厚荚相思林降低1.5%～3.3%。Contrast with Acasia crassicarpa forest and Shrub-herb restoration forest,with the recovery of vegetation, the effects of Eucalyptus grandis × E. urophylla plantation on the soil hydrology and physical properties, the results showed： （1） In the case of sunny and rainy days, average soil moisture content （0 - 80 cm layer） followed by 18.33%-22.69% and 22.29% - 26.66%, respectively reduced 1.0% - 18.1% than Acasia crassicarpa forest and Shrub-herb forest. （2） The average soil penetration rate of Eucalyptus grandis×E, urophylla plantation were 2.72-10.56 mm·min^-1, increased 2.5%- 7.1% than Shrub-herb forest, and reduced 6.5 % - 25.4% than Acasia crassicarpa forest. （3） The average soil density of Eucalyptus grandis ×E. urophylla plantation were 1.219 - 1.499 g·cm^-3, lower 0.6% - 2.6% than Shrub-herb forest, higher 0.8% - 2.5% than Acasia crassicarpa forest. （4） The soil non-capillary porosity, capillary porosity and total porosity of Eucalyptus grandis ×E. urophylla plantation （0 - 1 m） were 8.3% - 12.8%, 33.2 - 36.0%, and 43.2% - 46.0%, increased 1.6% - 2.4% than Shrub-herb forest and reduced 1.5% - 3.2% than Acasia crassicarpa Forest. （5） The maximum water holding capacity ,capillary moisture water holding capacity, and minimum water-holding capacity of Eucalyptus grandis × E. urophylla plantation （0 - 1 m） were 433.30 mm, 347.44 mm and 253.14 mm, respectively lower 1.5 % - 3.3 % than Acasia crassicarpa forest and Shrub-herb forest（6） The effective soil storage capacity of Eucalyptus grandis × E. urophylla plantation （0 -1 m） were 265.6 mm, lower 1.5% - 3.3% than Acasia crassicarpa forest and Shrub-herb forest.

关 键 词：土壤水分-物理性质 尾巨桉人工林 厚荚相思人工林 灌草坡植被 杉木林采伐迹地 

分 类 号：S15[农业科学—土壤学]