大青山主要植被类型土壤物理特性的研究
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内蒙古自治区高等学校科学研究重点项目(NJ2207041)


Soil Physical Characteristics of Main Vegetation Types in Daqing Mountains
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    摘要:

    对大青山5种主要植被类型土壤物理特性进行了研究。结果表明, 在0-100cm土层范围内, 土壤石砾含量(粒级≥1mm)、土壤容重均随土层深度增加而增加; 土壤总孔隙度、田间持水量和最大持水量均随土层深度增加而减小。除辽东栎-虎榛子混交林外, 乔木林地土壤石砾含量、土壤容重较灌木林地小, 土壤总孔隙度、田间持水量和最大持水量较灌木林地大。土壤饱和导水率平均值排序为:虎榛子灌丛林>山杨天然林>白桦天然林>油松人工林>辽东栎-虎榛子混交林。0-60cm土层饱和蓄水量山杨天然林最大达3550.36t/hm2, 辽东栎-虎榛子混交林和虎榛子灌丛林较小, 分别为2319.85t/hm2和2271.87t/hm2

    Abstract:

    The soil physical characteristics of five main vegetation types in Daqing Mountains were studied. Results indicated that in 0-100 cm soil layer, gravel content (particle fraction ≥1 mm) and soil bulk density increased with the increase in soil depth; and soil total porosity, field capacity, and maximum moisture capacity decreased with the increase in soil depth. Besides the mixed forest of Quercus liaotungensis and Ostryopsis davidiana, gravel content and soil bulk density in arbor forest were less than those in shrub land. Soil total porosity, field capacity, and maximum moisture capacity in arbor forest were higher than those in the shrub land. The order of vegetation types, in terms of the average sat urated soil hydraulic conductivity, was: Ost ryopsis davi diana shrubs> Populus davidiana natural forest > Beula platyphylla natural forest> Pinus tabulaeformis plantation > mixed forest of Quercus liaotungensis and Ostry opsis davidiana. The maximum water storage in 0-60 cm soil layer in Popul us davidiana natural forest was the highest among the five vegetation types and its value reached 3550.36t hm2. The mixed forest of Quercus l iaot ungensisand Ostryopsis davidiana and Ostryopsis davidiana shrubs had the lower values of 2319.85 and 2271.87 t/hm2 , respectively.

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陈晓燕,田有亮,包志刚,何炎红,郭连生.大青山主要植被类型土壤物理特性的研究[J].水土保持通报,2009,(5):30-34

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  • 收稿日期:2008-12-16
  • 最后修改日期:2009-01-13
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  • 在线发布日期: 2014-11-26
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