冀北山地华北落叶松、桦木林土壤水分物理性质研究  

Study on physical properties of soil water of Larix principis-rupprechtii and Betula spp. forests in mountain of northern Hebei province

作　　者：李淑春[1] 

机构地区：[1]河北省木兰围场国有林场管理局,河北围场068450

出　　处：《河北林果研究》2017年第1期1-5,共5页Hebei Journal of Forestry and Orchard Research

基　　金：河北省林业厅科技项目"冀北山区森林生态系统健康评价技术研究"(1403451);林业公益性行业科研专项子课题"冀北山区典型森林生态系统健康经营技术研究与示范"(200804022F)

摘　　要：华北落叶松和桦木是冀北山区最主要的造林树种。为探讨二者的纯林或混交林对土壤水分物理性质的影响,以冀北山地华北落叶松林、落叶松白桦混交林、桦木林、黑桦林为研究对象,对其土壤水分物理性质进行比较,结果表明:土层越深,土壤容重越大,由大到小依次为华北落叶松林(1.14g/cm^3)、黑桦林(1.03g/cm^3)、落叶松白桦混交林(1.01g/cm^3)、桦木林(0.98g/cm^3),土壤总孔隙度由大到小排序为落叶松白桦混交林(53.04%)、华北落叶松林(51.84%)、桦木林(51.40%)、黑桦林(51.14%);土壤最大持水量由大到小排序为落叶松白桦混交林(55.53%)、桦木林(52.81%)、黑桦林(51.33%)、华北落叶松林(48.22%);土壤稳渗速率由大到小排序为落叶松白桦混交林、桦木林、黑桦林、华北落叶松林。营造华北落叶松和桦木混交林有利于土壤涵养水源和保持水土。Larix principis-rupprechtii forest and Betula spp. forest are the main afforesta- tion tree species in mountain of northern Hebei province. To explore the impact of construc- ting pure and mixed forest on physical characteristics of soil moisture, the Larix principis- rupprechtii forest, Larix principis-rupprechtii and Betula platyphylla mixed forest, birch forest, and black birch forest in mountain of northern Hebei province were taken as materi- als, and the physical properties of soil water were compared. The results showed that the deeper the soil, the greater the soil bulk density, and the order was： Larix principis-rup- prechtii forest （1.14 g/cm3） 〉 Betula dahurica forest （1.03 g/cm3） 〉 Betula platyphylla ＋ Larix principis-rupprechtii mixed forest （1.01 g/cm3） 〉 Betula spp. forest （0.98 g/ cm3）. The total soil porosity order was as follows： Betula platyphylla ＋ Larix principisrupprechtii mixed forest （ 53.04 % ） 〉 Larix principis-rupprechtii forest （51.84 % ） 〉 Betula spp. forest（51.40%）〉Betula dahurica forest（51.14%）. The soil maximum water-holding capacity order was. Betula platyphylla ＋ Larix principis-rupprechtii mixed forest （55. 53%） 〉 Betula spp. forest （52.81%） 〉 Betula dahurica forest （51.33%） 〉Larix prin- cipis-rupprechtii forest （48.22 %）. The order of soil steady infiltration rate was as follows. Betula platyphylla ＋ Larix principis-rupprechtii mixed forest 〉 Betula spp. forest Betula dahurica forest 〉 Larix principis-rupprechtii forest. Therefore, creating a mixed forest of Larix principis-rupprechtii forest and Betula spp. forest in mountain of northern Hebei province is beneficial to soil and water conservation.

关 键 词：冀北山地 土壤水分物理性质 土壤入渗 混交林 华北落叶松 桦木 

分 类 号：S714.7[农业科学—林学]