通用土壤流失方程
腐蚀
土壤流失
水文学(农业)
环境科学
细沟
沉积物
水土保持
WEPP公司
沉积(地质)
地表径流
侵蚀控制
土壤科学
农业
岩土工程
土壤水分
地理
地质学
生态学
地貌学
生物
考古
作者
W. H. Wischmeier,D. H. Smith
摘要
The Universal Soil Loss Equation (USLE) enables planners to predict the average rate of soil erosion for each feasible alternative combination of crop system and management practices in association with a specified soil type, rainfall pattern, and topography. When these predicted losses are compared with given soil loss tolerances, they provide specific guidelines for effecting erosion control within specified limits. The equation groups the numerous interrelated physical and management parameters that influence erosion rate under six major factors whose site-specific values can be expressed numerically. A half century of erosion research in many states has supplied information from which at least approximate values of the USLE factors can be obtained for specified farm fields or other small erosion prone areas throughout the United States. Tables and charts presented in this handbook make this information available for field use. Significant limitations in the data are identified. The USLE is an erosion model designed to compute longtime average soil losses from sheet and rill erosion under specified conditions. It is also useful for construction sites and other non-agricultural conditons, but it does not predict deposition and does not compute sediment yields from gully, streambank, and streambed erosion
科研通智能强力驱动
Strongly Powered by AbleSci AI