Quantifying the Effects of Erosion on Soil Productivity for the Northern Great Plains

量化侵蚀对北部大平原土壤生产力的影响

• 批准号: 8712881
• 负责人: John Wilson
• 金额: $ 7.07万
• 依托单位: Montana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-07-15 至 1990-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8712881&HistoricalAwards=false
• 关键词: Quantifying; Effects; Erosion; Soil; Productivity

Professor Wilson and coinvestigator Neilsen will analyze soil and crop yield information to develop an improved version of the soil productivity index developed by Larson and associates at the University of Minnesota. The index will also be modified so it can be applied to cereal grain crops. The investigators will use data on Montana's climates, soils, and cropping systems to further modify the index so that it can be used to compare productivity index values across geographic regions. They will test the accuracy of the resulting model in two small drainage basins for which they will obtain detailed erosion and productivity measurements. Relationships between soil erosion and productivity are complicated. They are of worldwide concern because of the great losses of productivity that can result from severe erosion. Developing a productivity index that could be applied across regions would be of considerable theoretical interest. Such an index would also be helpful in developing policies and programs to reduce erosion associated with cropping.

威尔逊教授和共同调查员尼尔森将分析土壤和作物产量信息，以开发明尼苏达大学拉森及其同事开发的土壤生产力指数的改进版本。 该指数也将进行修改，以便可以应用于谷类作物。 研究人员将利用蒙大拿州气候、土壤和耕作系统的数据进一步修改该指数，以便它可以用于比较不同地理区域的生产力指数值。 他们将在两个小流域中测试所得模型的准确性，并获得详细的侵蚀和生产力测量结果。 土壤侵蚀与生产力之间的关系很复杂。它们受到全世界的关注，因为严重的侵蚀可能导致生产力的巨大损失。 开发一个可以跨地区应用的生产率指数将具有相当大的理论意义。 这样的指数也将有助于制定减少与种植相关的侵蚀的政策和计划。