冀北辽河源地区不同林龄油松天然次生林土壤理化特征的研究  

Physicochemical Properties of the Soils of Pinus tabulaeformis Natural Secondary Stands with Different Ages in Liaoheyuan Area of Northern Hebei

作　　者：赵伟红[1] 康峰峰[1] 韩海荣[1] 赵金龙[1] 高晶[1] 于晓文[1] 宋小帅 立天宇 

机构地区：[1]北京林业大学林学院,北京100083

出　　处：《西北林学院学报》2014年第3期1-8,共8页Journal of Northwest Forestry University

基　　金：林业公益性行业科研专项(201204101)

摘　　要：为探讨不同林龄的油松天然次生林土壤理化性质的差异及规律,以辽河源地区油松(Pinus tabulaeformis)天然次生林为研究对象,研究了不同林龄林分的土壤理化特征及其垂直分布特征。结果表明:1)随着林龄的增加,土壤pH值和土壤全P含量逐渐增加而土壤容重逐渐降低,土壤自然含水量、土壤全K含量先降后增,而土壤有机质、土壤全N含量先增后降。林龄对林分土壤物理性质影响不显著,而对林分土壤化学性质影响显著。2)各林龄林地土壤容重、土壤pH值随着土层深度的增加而增加,土壤自然含水量、土壤有机质含量、N、P、K含量随着土层深度的增加逐渐降低。3)土壤理化各指标间关系密切,除土壤全P与土壤其它理化性质间均无显著相关外,其它各指标间的相关性显著,相关系数正负均有,相关性较为复杂。Differences and variation patterns of the soil physicochemical properties in natural secondary Pinus tabulaeformis forests with different ages occurring in Liaoheyuan Nature Reserve,Hebei province were investigated.The results showed that：1）with the increase of forest age,soil moisture and soil total K content decreased first and then increased gradually.Soil bulk density reduced steadily while soil pH and soil total P content increased slightly,respectively.Soil organic matter and soil total N content increased first and then decreased significantly.Variance analysis and multiple comparison results demonstrated that the stand age had non-significant effects on soil physical properties but considerable effects were observed on soil chemical properties in different soil layers.2）The soil bulk density and soil pH increased with the soil layer deepening while the soil moisture,soil organic matter,soil total N,soil total P and soil total K decreased with the increase of soil depth.3）Significant correlations either positive or negative were found among the indices of soil physicochemical properties except for soil total P.

关 键 词：辽河源 油松天然次生林 林龄 土层深度 土壤理化性质 

分 类 号：S791.254[农业科学—林木遗传育种]