Reference Curve Numbers and Behavior for Sugarcane on Highly Weathered Tropical Soils
作者： Aderson Sartori , Richard H. Hawkins , Abel M. Genovez
DOI: 10.1061/(ASCE)IR.1943-4774.0000354
关键词: Soil science 、 Tropical soils 、 Environmental science 、 Oxisol 、 Surface runoff 、 Rainfall runoff 、 Runoff curve number 、 Latosol
摘要: This work examines rainfall-runoff behavior and determines the reference curve numbers (CNs) on a highly weathered tropical clayey soil (Oxisol, or “latosol”) in Brazil for three conditions: (1) bare soil; (2) sugarcane with replanting each years; (3) near-permanent sugarcane without replanting. It compares findings U.S. experiences handbook values. Curve number runoff changed markedly after seventh month of growth, profound influences cover are clearly demonstrated. A surprising finding was that though these Oxisols quite rich clay, results suggest they should be classified as Hydrologic Soil Group B.
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