روش پیشنهادی تخمین منحنی مشخصه‌ی آب - خاک برای خاکهای چسبنده
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تخمین منحنی مشخصه‌ی آب خاک برمبنای منحنی دانه‌بندی و نسبت پوکی متغیر برای خاکهای مورد مطالعه در منطقه‌ی مرودشت در استان فارس
به رابطه‌ی بین رطوبت و مکش آب خاک، منحنی مشخصه‌ی آب خاک گفته می‌شود، که اندازه‌گیری آن وقتگیر و پرهزینه است. از روشهای تخمین منحنی مشخصه، استفاده از منحنی دانه‌بندی و چگالی ظاهری خاک است، که در آن از فراسنج مقیاس (a) استفاده می‌شود. در این پژوهش از 9 نمونه خاک مختلف منطقه‌ی مرودشت در استان فارس با بافتهای رس لایی و متوسط رسی لایی استفاده، و منحنی مشخصه‌ی هر خاک تعیین گردید. سپس منحنی دا...
full textبهبود تخمین منحنی مشخصه آب - خاک با استفاده از منحنی دانه‌بندی و چگالی ظاهری خاک
Soil particle size distribution and bulk density are used for estimating soil-moisture characteristic curve. In this model, soil particle size distribution curve is divided into a number of segments, each with a specific particle radius and cumulative percentage of the particles greater than that radius. Using these data, soil-moisture characteristic curve is estimated. In the model a scale f...
full textبهبود تخمین منحنی مشخصه آب - خاک با استفاده از منحنی دانه‌بندی و چگالی ظاهری خاک
Soil particle size distribution and bulk density are used for estimating soil-moisture characteristic curve. In this model, soil particle size distribution curve is divided into a number of segments, each with a specific particle radius and cumulative percentage of the particles greater than that radius. Using these data, soil-moisture characteristic curve is estimated. In the model a scale f...
full textتخمین منحنی مشخصه آب خاک با استفاده از منحنی دانه‌بندی و چگالی ظاهری خاک
To obtain soil-moisture characteristic curve experimentally is time-consuming and usually subject to considerable errors. So, many investigators have tried to predict soil-moisture characteristic curve by different models. One of these models predicts soil moisture characteristic curve based on soil particle size distribution and bulk density. In this model, soil particle size distribution curv...
full textتخمین منحنی مشخصه آب خاک با استفاده از منحنی دانه‌بندی و چگالی ظاهری خاک
To obtain soil-moisture characteristic curve experimentally is time-consuming and usually subject to considerable errors. So, many investigators have tried to predict soil-moisture characteristic curve by different models. One of these models predicts soil moisture characteristic curve based on soil particle size distribution and bulk density. In this model, soil particle size distribution curv...
full textارزیابی توابع انتقالی پارامتریک برای تخمین منحنی مشخصه آب خاک در استان فارس
Soil water characteristic curve shows the relationship between soil water content and matric suction, which has an important role in water movement in the soil. The measurement of this curve is expensive and time-consuming in laboratory therefore, many methods have been proposed for its estimation including pedotransfer functions. By using the pedotransfer functions, soil water characteristic c...
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Journal title
volume دوره 22 issue 33
pages 77- 83
publication date 2006-06-22
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