文章摘要
侯宁宁, 苏晓琳, 杨钙仁, 于婧睿, 王玮.桉树造林的土壤物理性质及其水文效应[J].水土保持学报,2019,33(3):101~107,114
桉树造林的土壤物理性质及其水文效应
Soil Physical Properties and Hydrological Effects of Eucalyptus Plantation
投稿时间:2018-09-28  
DOI:10.13870/j.cnki.stbcxb.2019.03.016
中文关键词: 桉树人工林  米老排  马尾松  杉木  土壤物理性质  土壤水库容
英文关键词: Eucalyptus plantation  Myialria Haosensi hamamelidaceae  Pinus Massoniana  Cuninghamia Lanceolate  soil physical properties  soil reservoir capacity
基金项目:国家自然科学基金项目(31360134,40861025)
作者单位E-mail
侯宁宁, 苏晓琳, 杨钙仁, 于婧睿, 王玮 广西大学林学院, 南宁 530004 yanggr@gxu.edu.cn 
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中文摘要:
      为探讨广西主要长周期人工林改为短周期桉树人工林后林地土壤水文功能变化,采用野外采样与室内测试分析相结合的方法,分别研究了1,3,5年生桉树人工林及与之对应的桉树造林前米老排林、杉木林和马尾松林土壤基本物理性质与水分调蓄功能的差异。结果表明:桉树造林后与造林前的长周期人工林相比,土壤蓄水能力的变化主要表现为20—40 cm土层土壤水库容和剩余蓄水空间增加。随着土层深度的增加,土壤容重逐渐增大,饱和持水量、总孔隙度逐渐减小,同时,土壤水库容和剩余蓄水空间也呈现逐渐减小的趋势。桉树造林对土壤物理性质的影响主要集中在土壤的20—40 cm土层,而桉树林对土壤的蓄水能力存在的影响与轮伐周期较长的人工林相比,主要表现为20—40 cm土层土壤水库容和剩余蓄水空间增加,1,3,5年生桉树人工林的土壤水库容分别比对应的长周期人工林高11.25%,19.14%,14.33%)剩余蓄水空间则分别比对应长周期人工林高9.16%,113.01%,23.62%。而40 cm以下土层的土壤蓄水能力却下降。研究结果可为桉树造林的土壤效应评价提供理论依据。
英文摘要:
      In order to study the changes of soil hydrological function after the main long-period plantations were changed into short-period Eucalyptus plantations in Guangxi, the basic physical properties and water storage function of soil were studied by combining field sampling with laboratory analysis. Compared with long-period plantation before, the changes of soil water storage capacity after afforestation of Eucalyptus were mainly manifested by the increases of reservoir capacity and residual water storage space in 20-40 cm soil layer. With the increase of soil depth, and soil bulk density increased gradually, the saturated water holding capacity and total porosity decreased gradually, meanwhile, soil reservoir capacity and residual storage space also showed a decreasing trend. The influence of Eucalyptus afforestation on soil physical properties occurred mainly in 20-40 cm soil. The soil reservoir capacity and residual water storage space increased compared with the long rotation period plantation. The soil reservoir capacity of one-year-old, three-year-old and five-year-old Eucalyptus plantations was 11.25%, 19.14% and 14.33% higher than that of the corresponding long-term plantations, while the residual storage space was 9.16%, 113.01% and 23.62% higher than that of the corresponding long-term plantations respectively. And the soil water storage capacity under 40 cm soil layer deceased. The results could provide a theoretical basis for evaluating the soil effect of Eucalyptus plantation.
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