文章基本信息

标题：SOIL QUALITY ATTRIBUTE TIME PATHS: OPTIMAL LEVELS AND VALUES
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作者：Smith, Elwin G. ; Lerohl, Mel L. ; Messele, Teklay 等
期刊名称：Journal of Food Distribution Research
印刷版ISSN：0047-245X
出版年度：2000
页码：307-324
出版社：Food Distribution Research Society
摘要：We develop a dynamic soil quality model to evaluate optimal cropping systems in the northern Great Plains. Modeling soil quality attributes is feasible, and attribute model results apply to a wide range of soils. A crop production system with continuous spring wheat and direct planting is the most profitable system. This system has low soil erosion and high quality attributes, indicating the benefits of increased soil quality exceed the higher maintenance costs. On-site value of additional soil organic carbon (OC) ranges from $1 to $4/ton OC/hectare/year. These values for soil OC impact the optimum tillage practice, but not the crop rotation.