Pedotransfer in soil physics: Trends and outlook - A review

Y. A. Pachepsky, K. Rajkai, B. Tóth

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Parameters governing the retention and movement of water and chemicals in soils are notorious for the difficulties and high labor costs involved in measuring them. Often, there is a need to resort to estimating these parameters from other, more readily available data, using pedotransfer relationships. This work is a mini-review that focuses on trends in pedotransfer development across the World, and considers trends regarding data that are in demand, data we have, and methods to build pedotransfer relationships. Recent hot topics are ad-dressed, including estimating the spatial variability of water contents and soil hyd-raulic properties, which is needed in sensitivity analysis, evaluation of the model performance, multimodel simulations, data assimilation from soil sensor networks and upscaling using Monte Carlo simulations. Ensembles of pedotransfer functions and temporal stability derived from "big data" as a source of soil parameter vari-ability are also described. Estimating parameter correlation is advocated as the pathway to the improve-ment of synthetic datasets. Upscaling of pedotransfer relationships is demonstrated for saturated hydraulic conductivity. Pedotransfer at coarse scales requires a differ-ent type of input variables as compared with fine scales. Accuracy, reliability, and utility have to be estimated independently. Persistent knowledge gaps in pedotrans-fer development are outlined, which are related to regional soil degradation, sea-sonal changes in pedotransfer inputs and outputs, spatial correlations in soil hydrau-lic properties, and overland flow parameter estimation. Pedotransfer research is an integral part of addressing grand challenges of the twenty-first century, including carbon stock assessments and forecasts, climate change and related hydrological weather extreme event predictions, and deciphering and managing ecosystem services. Overall, pedotransfer functions currently serve as an essential instrument in the science-based toolbox for diagnostics, monitoring, predictions, and management of the changing Earth and soil as a life-supporting Earth system.

Original languageEnglish
Pages (from-to)339-360
Number of pages22
JournalAgrokemia es Talajtan
Volume64
Issue number2
DOIs
Publication statusPublished - Dec 1 2015

Fingerprint

soil physics
physics
pedotransfer function
pedotransfer functions
soil
upscaling
prediction
stock assessment
soil degradation
saturated hydraulic conductivity
overland flow
twenty first century
extreme event
carbon sinks
ecosystem service
data assimilation
ecosystem services
simulation
sensitivity analysis
trend

ASJC Scopus subject areas

  • Soil Science
  • Agronomy and Crop Science

Cite this

Pedotransfer in soil physics : Trends and outlook - A review. / Pachepsky, Y. A.; Rajkai, K.; Tóth, B.

In: Agrokemia es Talajtan, Vol. 64, No. 2, 01.12.2015, p. 339-360.

Research output: Contribution to journalArticle

Pachepsky, Y. A. ; Rajkai, K. ; Tóth, B. / Pedotransfer in soil physics : Trends and outlook - A review. In: Agrokemia es Talajtan. 2015 ; Vol. 64, No. 2. pp. 339-360.
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