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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Pedo-transfer functions for saturated hydraulic conductivity of cultivated soils in the mid hills of Sikkim
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Pedo-transfer functions for saturated hydraulic conductivity of cultivated soils in the mid hills of Sikkim

机译：锡克西姆中山栽培土壤饱和水力电导率的Popo转移功能

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摘要

In this study, pedotransfer functions (PTFs) are developed for saturated hydraulic conductivity (K-s) using multiple linear regression (MLR) technique for the cultivated terraced land of East Sikkim district, North East India. Soil samples were collected for 29 stations and K-s values were measured using the constant head permeameter. The various combinations of measured soil properties, including percentage of sand, silt, clay, bulk density (BD), particle density (PD), porosity, organic carbon (OC) content were used for the development of the models. The K-s value varied from 0.97 to 29.38 cm/day and the mean value was 8.04 cm/day in the study area. The correlation between predicted and measured values was found to be better for the combination, including five input variables. The results indicated a negative correlation of K-s with silt, clay and BD, whereas sand, PD, OC and porosity had a positive correlation. The recommended MLR model 5 consisting of five input variables for the prediction of K-s in the study area had R-2 values of 0.81 and 0.83 during model development and model validation, and showed goodness-of-fit with the observed K-s value. The PTFs developed in this study would be helpful for the planning and design of water resources structures in the hilly state of Sikkim.
机译：在本研究中，使用多种线性回归（MLR）技术为东部印度东部的东锡克基姆区的耕地（MLR）技术开发了PEDOT转换功能（K-S）。收集土壤样品以进行29个站，使用恒定的头部偏振计测量K-S值。测量土壤性质的各种组合，包括砂，淤泥，粘土，堆积密度（BD），颗粒密度（Pd），孔隙率，有机碳（OC）含量的百分比用于开发模型。 K-S值从0.97变化到29.38厘米/天/天，平均值在研究区域为8.04厘米/天。发现预测和测量值之间的相关性更好地用于组合，包括五个输入变量。结果表明K-S与淤泥，粘土和BD的负相关，而砂，Pd，OC和孔隙率具有正相关性。推荐的MLR模型5由五个输入变量组成，用于研究区域中的K-S预测，在模型开发和模型验证期间的R-2值为0.81和0.83，并显示出符合所观察到的K-S值的良好。本研究中开发的PTF将有助于锡克基姆丘陵州水资源结构的规划和设计。

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