辽东山地古石河冰缘地貌不同植被类型表层土壤特性
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国家自然科学资助项目“辽东山地老秃顶子冰缘地貌植物群落稳定性研究”(41271064)


Surface Soil Characteristics of Different Vegetation Types of Ancient Block Stream-Periglacial Landform at Mountain Areas in Eastern Liaoning Province
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    摘要:

    [目的] 对辽东山地古石河冰缘地貌不同植被类型下表层土壤特性进行研究,为辽东山区冰缘地貌土壤生态环境的管理和保护提供基础数据和科学依据。[方法] 以老秃顶子古石河冰缘地貌发育的落叶阔叶林、针阔混交林、暗针叶林、灌草丛4种植被类型表层土壤为研究对象,采用野外定点取样及实验室分析相结合的方法,研究不同植被类型下的土壤特性。[结果] 土壤属于酸性淋溶土,含有多种氧化物,各植被类型间土壤特性存在明显差异,相对而言,灌草丛表土温度较高,毛管孔隙所占比例大,保水蓄水能力较强;针阔混交林土壤比重小,疏松程度好,有机质含量较高;暗针叶林土壤酸性较强;落叶阔叶林和针阔混交林土壤水分更有利于植物生长,枯落物现存量较多,涵养水源和保持水土功能较好。[结论] 海拔高度对土壤特性影响显著,枯落物现存量及养分储量与土壤特性有明显定量关系。保护区可通过改善土壤养分含量维持生境稳定性。

    Abstract:

    [Objective] The surface soil characteristics of different vegetation types of ancient block stream-periglacial landform at mountain areas in Eastern Liaoning Province were studied to provide basic data and scientific basis for the management and protection of soil ecological environment of the periglacial landforms. [Methods] Quantitative characteristics of soil environment under different vegetation types in the periglacial area of Laotudingzi Mt., including broadleaved deciduous forest, mixed broadleaf-conifer forest, dark coniferous forest and shrub-grassland were studied by means of field survey and laboratory analysis. [Results] In the periglacial area, the investigated soils all belong to acid leached soil, containing a variety of oxides. Significant differences in soil properties among different vegetation types existed: in comparison, meadow thicket soil surface temperature is higher, the proportion of capillary pores is larger, and the water storage capacity is stronger. Theropencedrymion soil specific gravity is smaller, loose degree is better, soil organic matter content is higher. Dark coniferous forest soil acidity is stronger. There are more litters in deciduous broad-leaved forest and theropencedrymion, soil moisture conducive to plant growth, water conservation and soil and water conservation function is better. [Conclusion] Altitude had significant effects on soil properties, and there was a clear quantitative relationship between soil properties, and litter stock and nutrient reserves. The preservation of that area can maintain the habitat stability of soil nutrition.

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弋灵均,张华,侯荣,熊丹阳,何红,刘玉国,金郁.辽东山地古石河冰缘地貌不同植被类型表层土壤特性[J].水土保持通报,2017,37(2):7-16

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  • 收稿日期:2016-09-20
  • 最后修改日期:2016-10-22
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  • 在线发布日期: 2017-05-10
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