Which of the following is determined using a nomograph?
Universal Soil Loss Equation (USLE: \(A = R \cdot K \cdot L \cdot S \cdot C \cdot P\)): The \lt strong\gt Soil Erodibility Factor (K)\lt /strong\gt represents the intrinsic susceptibility of a soil type to detachment and transport by rainfall and runoff. Wischmeier, Johnson, and Cross (1971) developed the famous \lt strong\gt Soil Erodibility Nomograph\lt /strong\gt , which graphically derives the value of \(K\) based on five soil properties: (1) percentage of silt + very fine sand (0.002 - 0.1 mm), (2) percentage of sand (0.1 - 2.0 mm), (3) organic matter content, (4) soil structure code, and (5) soil profile permeability class. \(R\) is calculated from kinetic energy and \(I_{30}\); \(LS\) from topographic slope and length formulas. Therefore, \(K\) is determined using the nomograph.
सार्वभौमिक मृदा हानि समीकरण (USLE):
मृदा क्षरणीयता कारक (Soil erodibility factor, K) का निर्धारण विशमियर (Wischmeier) द्वारा विकसित नोमोग्राफ (Nomograph) द्वारा किया जाता है।
यह नोमोग्राफ सिल्ट + बहुत बारीक बालू प्रतिशत, रेत प्रतिशत, कार्बनिक पदार्थ, मृदा संरचना और पारगम्यता पर आधारित होता है।