Hydropedology and pedotransfer functions

S. Zacharias; D. Altdorff; L. Samaniego-Eguiguren; P. Dietrich

Hydropedology and pedotransfer functions

in Precision agriculture '09

Autor:innen:

S. Zacharias

S. Zacharias UFZ – Helmholtz Centre for Environmental Research, Dep. Monitoring and Exploration Technologies, Permoserstrasse 15, 04318 Leipzig, Germany; steffen.zacharias@ufz.de

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D. Altdorff

D. Altdorff UFZ – Helmholtz Centre for Environmental Research, Dep. Monitoring and Exploration Technologies, Permoserstrasse 15, 04318 Leipzig, Germany; steffen.zacharias@ufz.de

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L. Samaniego-Eguiguren

L. Samaniego-Eguiguren UFZ – Helmholtz Centre for Environmental Research, Dep. Monitoring and Exploration Technologies, Permoserstrasse 15, 04318 Leipzig, Germany; steffen.zacharias@ufz.de

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, und

P. Dietrich

P. Dietrich UFZ – Helmholtz Centre for Environmental Research, Dep. Monitoring and Exploration Technologies, Permoserstrasse 15, 04318 Leipzig, Germany; steffen.zacharias@ufz.de

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Art:: Kapitel

Seiten:: 545–550

DOI:: https://doi.org/10.1163/9789086866649_066

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Abstract

It is an always growing insight in the research and science community that interdisciplinarity and a perspective related to the landscape scale is necessary if cross-cutting issues like watershed-management or different agricultural management practices will be examined. To meet the challenges which result from questions related to soil and water at varying spatial and temporal scales – bridging traditional pedology, hydrology and soil physics as well as other related disciplines is absolutely necessary. In the last years the new concept of hydropedology – the combination of knowledge and expertise in the fields of pedology, soil physics and hydrology – attracts a wide interest. The ‘Critical Zone’ – Concept as a system concept which covers the subsurface environment (root zone, vadose zone, groundwater zone) and the land surface including vegetation as well as surface water bodies provides a sustaining framework for interdisciplinary research on the terrestrial environment. Simulation models are an important tool in evaluating environmental effects. In soil science related models the required information are often derived through expensive laboratory measurements. Often large numbers of samples are needed to cover the temporal and spatial variability of these properties. Using the relationship between soil hydraulic parameters and properties, which are easier to measure, pedotransfer functions (PTF) represent an effective way for model parameterization. Apart from the advantages of PTFs (easy to derive, easy to use, inexpensive) there are also some problems. So often the representation of soil structure induced effects is poor. In the presentation advantages and disadvantages of PTF will be discussed. Examples from the own work represent the use of PTFs in the context of hydrological modelling. A careful selection or construction of PTFs offers an effective way towards improved model parameterization and model prediction.

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Precision agriculture '09

ISBN:: 9789086866649

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 01 Jan 2009

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- Biowissenschaften
  - Allgemein
  - Landwirtschaft und Umwelt

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Hydropedology and pedotransfer functions

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Precision agriculture '09

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