长潭土壤理化性质研究.DOCVIP

广东省蕉岭长潭自然保护区 邓永林 曾锋 （ 广东省，广州 510520摘要： cmol(+)/Kg～8.20cmol(+)/Kg，电导率为57.87～97.44，全氮、碱解氮、全磷、速效磷和速效钾分别为1.88g/kg、105.20 mg/kg、0.19g/kg、2.22mg/kg和130.53mg/kg（2）不同林分类型，其土壤容重、最大持水量、全N、碱解氮、速效钾等也不相同，但土壤pH值、全P、有机P在不同林分类型间等差异不显著。其中，阔叶混交林与针阔混交林的土壤容重、最大持水量有显著差异(p＝0.021，p＝0.022)，阔叶混交林、针阔混交林与马尾松林的全N、碱解氮、速效钾显著差异(p＝0.026，p＝0.032)。（3）从土壤理化性状来看，阔叶混交林、毛竹林的土壤质量和肥力要比马尾松林和杉木林好。 关键词：长潭自然保护区; 土壤理化性质 中图分类号：Q948文献标识码A???? 文章编号：oil physical and chemical properties of differ Forest Types in Guangdong JiaoLing Changtan Provincial Natural Reserve Lin Yihui Zhang Sujun Deng Yonglin Zeng Feng (Forestry Administration of Guangdong, Guangzhou 510173，China) Abstract: Impacts of different forest type on soil fertility in the subtropical forest ecosystems were studied by comparing the physical and chemical properties of soil of broad leaved mixed forest, Pinus massoniana stand, Cunninghamia lanceolata stand, Phyllostachys edulis forest, as well as mixed broadleaf-conifer forest in Guangdong JiaoLing Changtan Provincial Natural Reserve．Results indicated that：(1)The soil was acid ,the content of rock fragment ,soil bulk densities were 4.0%,1.11 g.cm-3,soil total porosities were 58.01％，of which the soil non-capillary porosities and capillary porosities were 37.73％,20.28％；soil moisture, maximum capillary capacity and minimum capillary capacity were 296.02 g/kg、442.95g/kg、321.38g/kg,respectively,with the ?cation exchange capacity, ?electrical conductivity were 5.99 cmol (+)/Kg～8.20 cmol(+)/Kg , 57.87～97.44 and total N were 1.88g/kg, available nitrogen were 105.20 mg/kg, total P were 0.19g/kg,available P was 2.22mg/kg, available K was 130.53mg/kg.(2)it is various in the different forest type that is soil rock fragment ,soil bulk densities, maximum capillary capacity, total N, available nitrogen, available K but there are no difference in soil Ph value, total P and available P, while there were significantly difference in soil rock fragment ,soil bulk densities, maximum capillary capacity((p=0.021，