Acta Agrestia Sinica

›› 2002, Vol. 10 ›› Issue (1): 74-78.DOI: 10.11733/j.issn.1007-0435.2002.01.014

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A Study of the Effects of Different Grazing Intensities on Soil Physical Properties

ZHANG Yun-wei, HAN Jian-guo, LI Zhi-qiang   

  1. Institute of Grassland Science, China Agricultural University, Beijing 100094, China
  • Received:2001-11-08 Revised:2001-12-06 Online:2002-02-15 Published:2002-02-15

放牧强度对土壤物理性质的影响

张蕴薇, 韩建国, 李志强   

  1. 中国农业大学草地研究所, 北京, 100094
  • 作者简介:张蕴薇(1974- ),女,1992～1999年于内蒙古农牧学院草原系获得学士和硕士学位,现在中国农业大学草地研究所攻读博士学位

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Abstract: The experiment of the effects of different grazing intensities on soil physical characters was conducted on Russian wildrye (Pasathyrostachys juncea) pasture in the mixed farming and raching region in north China.The results showed that the soil porosity degree and penetration rate decreased,while soil bulk density increased with grazing intensity increased.Effects of grazing intensities on soil physical characters reduced with increase of soil depth.The soil properties of the surface layer (0～10cm) were the most sensitive to grazing intensity.

Key words: Grazing intensities, Soil, Porosity degree, Moisture penetrate rate

摘要： 在华北农牧交错带,研究放牧强度对新麦草人工草地土壤物理性质的影响.结果表明,随着放牧强度的增加,土壤孔隙度和水分渗透率随之降低,而土壤容重则呈增加趋势.土壤表层(0～10cm)的物理特性对放牧强度的反应比较敏感.

关键词: 放牧强度, 土壤, 渗透率, 孔隙度

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