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应用生态学报 ›› 1999, Vol. 10 ›› Issue (2): 175-178.

• 研究论文 • 上一篇    下一篇

土壤侵蚀对土壤肥力及土地生物生产力的影响

杨武德1, 王兆骞2, 眭国平3, 陈宝林3, 徐锴3   

  1. 1. 山西农业大学农学系, 太谷 030801;
    2. 浙江农业大学农业生态研究所, 杭州 310029;
    3. 上海测试技术研究院中子活化分析室, 上海 200233
  • 收稿日期:1998-09-07 修回日期:1998-11-13 出版日期:1999-03-25 发布日期:1999-03-25
  • 通讯作者: 杨武德,男,1960年生,副教授,生态学博士,研究方向为农业生态,已发表论文20余篇、著作2部.E-mail:ywdh@pubic.yz.sx.cn
  • 基金资助:

    FAO/UNDP亚太区域资助项目(RAS93-062).

Impact of soil erosion on soil fertility and land productivity

Yang Wude1, Wang Zhaoqian2   

  1. 1. Department of Agronomy, Shanxi Agricultural University, Taigu 030801;
    2. Institute of Agricultural Ecology, Zhejiang Agricultural University, Hangzhou 310029
  • Received:1998-09-07 Revised:1998-11-13 Online:1999-03-25 Published:1999-03-25

摘要: 通过对红壤坡地不同土地利用方式土壤肥力及土地生物生产力的空间分异研究,揭示了土壤侵蚀对土壤肥力和土地生产力的负面影响。即侵蚀导致N、P、K等土壤速效养分含量减少及其在坡面上部的相对贫乏和下部的相对富集;土壤有机质含量降低;土壤机械组成中砂、粉、粘粒比率发生变化,表现为土壤沙化,土地生物生产力下降。

关键词: 红壤坡地, 土壤肥力, 生物生产力, 空间分异, 土壤侵蚀, 土壤水热, 坡向, 海拔, 植物多样性

Abstract: Studies on the spatial differentiation of soil fertility and land productivity of red soil slope fields under different land use patterns revealed that soil erosion had negative effects on soil fertility and land biological productivity,which mainly manifested in the decreasing contents of soil available N, P, K. and their relative poor on the top and rich at the bottom of the slope, the reduced soil organic matter content, the soil sandification, and the resultant reduction of land biological productivity.

Key words: Red soil slope field, Soil fertility, Land productivity, Spatial differentiation, Soil erosion, plant diversity, altitude, soil moisture and temperature, slope aspect