Updated European hydraulic pedotransfer functions with communicated uncertainties in the predicted variables (euptfv2)

نویسندگان

چکیده

Abstract. Soil hydraulic properties are often derived indirectly, i.e. computed from easily available soil with pedotransfer functions (PTFs), when those needed for catchment, regional or continental scale applications. When predicted parameters used the modelling of state and flux water in soils, uncertainty values can provide more detailed information drawing conclusions. The aim this study was to update previously published European PTFs (Tóth et al., 2015, euptf v1.4.0) by providing prediction calculation built into transfer functions. new set algorithms point predictions content at saturation (0 cm matric potential head), field capacity (both ?100 ?330 wilting (?15 000 plant water, saturated conductivity, as well Mualem–van Genuchten model moisture retention conductivity curve. minimum input is depth sand, silt clay content. effect including additional like organic carbon content, bulk density, calcium carbonate pH cation exchange were extensively analysed. adopting random forest method. advantage that they (i) about uncertainty, (ii) significantly accurate than euptfv1, (iii) be applied predictor variable combinations 32 instead 5, (iv) now also head A practical guidance on how use provided.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Scale-Dependent Pedotransfer Functions Reliability for Estimating Saturated Hydraulic Conductivity

Saturated hydraulic conductivity Ksat is a fundamental characteristic in modeling flow and contaminant transport in soils and sediments. Therefore, many models have been developed to estimate Ksat from easily measureable parameters, such as textural properties, bulk density, etc. However, Ksat is not only affected by textural and structural characteristics, but also by sample dimensions e.g., i...

متن کامل

New generation of hydraulic pedotransfer functions for Europe

A range of continental-scale soil datasets exists in Europe with different spatial representation and based on different principles. We developed comprehensive pedotransfer functions (PTFs) for applications principally on spatial datasets with continental coverage. The PTF development included the prediction of soil water retention at various matric potentials and prediction of parameters to ch...

متن کامل

Estimating the Saturated Hydraulic Conductivity of Soil Using Gene Expression Programming Method and Comparing It with the Pedotransfer Functions

Saturated hydraulic conductivity of soil is an important physical property of soil that affects water movement in soil, Since the measurement of saturated hydraulic conductivity by direct methods in the field or in the laboratory is hard, time-consuming and costly, the indirect methods are being used.The aim of this study is to estimate the saturated hydraulic conductivity from other soil prope...

متن کامل

Development of Pedotransfer Functions for Estimation of Soil Hydraulic Parameters using Support Vector Machines

1443 Soil Sci. Soc. Am. J. 73:1443-1452 doi:10.2136/sssaj2008.0021 Received 23 Jan. 2008. *Corresponding author ([email protected]). © Soil Science Society of America 677 S. Segoe Rd. Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Geoscientific Model Development

سال: 2021

ISSN: ['1991-9603', '1991-959X']

DOI: https://doi.org/10.5194/gmd-14-151-2021