东北典型黑土区土壤侵蚀过程顺坡起垄垄沟水力学特征分析
Analysis on the Hydraulic Characteristics of Longitudinal Ridges and Ditches in the Process of Soil Erosion in the Typical Black Soil Area of Northeast China
[目的]垄沟是垄作长缓坡耕地土壤侵蚀过程的重要汇流路径。本文通过室内人工降雨模拟实验,模拟不同雨强、坡度和垄作方式下垄作长缓坡耕地土壤侵蚀过程,提出作为主要汇流路径的垄沟的主要水力学参数和变量,从而为土壤侵蚀过程模拟提供技术支持。[方法]采用室内模拟降雨的方法,系统分析不同垄作方式、坡度、雨强等条件下垄沟的主要水力学参数和变量。采用正交试验设计,选取 3种典型降雨强度(30、50和 75mm/h)、3种裸地垄作方式(无垄、顺坡宽垄和顺坡窄垄)、2…查看全部>>
[Objective]Ridge and furrow is an important confluence path in soil erosion process of long and gentle slope farmland.It is very important to understand the hydraulic characteristics of ridge and furrow for simulating the soil erosion process of slope farmland in typical black soil region of Northeast China.[Method]The main hydraulic parameters and variables of ridge and furrow under different ridge cultivation methods,slope and rainfall intensity were syste…查看全部>>
李坤衡;焦剑;秦伟;殷哲;
Northeast black soil Area Soil erosion Manning model Hydraulic radius Roughness2
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