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An application of Geographic Information Systems to soil erosion hazards investigation on forest land.

机译:地理信息系统在林地土壤侵蚀危害调查中的应用。

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摘要

This is a case study using Geographic Information Systems (GIS) for soil erosion investigation on forest lands. The modified Universal Soil Loss Equation (USLE) factors (rainfall, soil erodibility, slope gradient and length, and cover-management) were integrated into GIS for spatial analysis of soil erosion predictions. This result was compared to the SCS erosion hazard classification for the soil mapping units. The effect of four different digital map resolutions on prediction of soil erosion was analyzed.;The major results of this study were: that the modified USLE is not very sensitive to the landscape variation on the study site, compared with the SCS erosion classification; and the lower resolution maps provided less information, especially in the slope gradient and length factors.
机译:这是一个使用地理信息系统(GIS)进行林地土壤侵蚀调查的案例研究。修改后的通用土壤流失方程(USLE)因素(降雨,土壤易蚀性,坡度和长度以及覆盖度管理)已集成到GIS中,用于土壤侵蚀预测的空间分析。将该结果与土壤测绘单元的SCS侵蚀危害分类进行了比较。分析了四种不同的数字地图分辨率对土壤侵蚀预测的影响。这项研究的主要结果是:与SCS侵蚀分类相比,改进的USLE对研究场地的景观变化不是很敏感;较低分辨率的地图提供的信息较少,尤其是在坡度和长度因子方面。

著录项

  • 作者

    Lin, ChiJien Julian.;

  • 作者单位

    State University of New York College of Environmental Science and Forestry.;

  • 授予单位 State University of New York College of Environmental Science and Forestry.;
  • 学科 Agriculture Forestry and Wildlife.
  • 学位 M.S.
  • 年度 1991
  • 页码 96 p.
  • 总页数 96
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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