| 摘要: |
| 通过对广东省蕉岭长潭省级自然保护区针阔混交林、马尾松林、杉木林、毛竹林、阔叶混交林等五种不同森林类型土壤理化性质状况的比较，研究了不同森林类型对土壤肥力状况的影响。结果表明：（1）广东省蕉岭长潭省级自然保护区表层表土呈酸性，石砾含量、土壤容重、总孔隙度、毛管孔隙度和非毛管孔隙度，自然含水量、最大持水量、最小持水量分别为为4.0%、1.11g/cm3、58.01%、37.73%、20.28%和296.02 g/kg、442.95g/kg、321.38g/kg；土壤阳离子交换量为5.99 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: 广东省蕉岭长潭省级自然保护区 林分类型 土壤理化性质 |
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| 基金项目:广东省林业局项目“广东省森林生态效益监测站建设与研究”。 |
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| Topsoil physical and chemical properties of differ Forest Types in Guangdong JiaoLing Changtan Provincial Natural Reserve |
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linyihui
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| 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，p=0.022)) between mixed broadleaf-conifer forest and broad leaved mixed forest , significantly difference in total N, available nitrogen, available K ((p=0.026，p=0.032)) between mixed broadleaf-conifer forest ,broad leaved mixed forest and Pinus massoniana.(3) Soil fertility and quality of mixed broadleaf-conifer forest ,broad leaved mixed forest and Phyllostachys edulis were better than that of Pinus massoniana and Cunninghamia lanceolata. based on its soil physical and chemical properties. |
| Key words: Guangdong JiaoLing Changtan Provincial Natural Reserve, Forest types, Physical and chemical properties |
