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Modeling soil hydraulic properties for a wide range of soil conditions

Author

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  • Balland, Vincent
  • Pollacco, Joseph A.P.
  • Arp, Paul A.

Abstract

This paper presents equations for estimating soil hydraulic properties such as bulk density (Db), field capacity (FC), permanent wilting point (PWP), and saturated hydraulic conductivity (Ksat) from soil composition (sand, silt, clay, organic matter, coarse fragments), and with increasing soil depth, for a wide range of natural soil types and conditions. The equations, derived from New Brunswick and Nova Scotia soil survey reports, were evaluated and extended to international databases, e.g., ISRIC (Db, FC, PWP) and UNSODA (Ksat). Equation derivation was guided by theoretical considerations and regression techniques, to generate realistic Db, FC, PWP and Ksat values with sand, clay, organic matter content and soil depth as the only predictor variables, each with low inter-coefficient correlations. The results ensure that Db≤Dp (soil particle density), FC≤SP(soil saturation point), PWP≤FC, and Db, FC, PWP, Ksat>0. The best-fitted Db, FC, PWP, log10(Ksat), data variations are represented as follows: R2=0.83, 0.96, 0.65 and 0.79, respectively. In addition, the associated root-mean-square-residuals are similar to published values achieved with other approaches. The equations can be used to quantify expected changes in available soil water, Db, FC, PWP, log10(Ksat), and with varying organic matter content and texture. Examining the ISRIC data revealed systematic coefficient variations for the Db equation by soil order.

Suggested Citation

  • Balland, Vincent & Pollacco, Joseph A.P. & Arp, Paul A., 2008. "Modeling soil hydraulic properties for a wide range of soil conditions," Ecological Modelling, Elsevier, vol. 219(3), pages 300-316.
    • Handle: RePEc:eee:ecomod:v:219:y:2008:i:3:p:300-316
    DOI: 10.1016/j.ecolmodel.2008.07.009
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    References listed on IDEAS

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    1. Zhang, C.F. & Meng, F.-R. & Bhatti, J.S. & Trofymow, J.A. & Arp, Paul A., 2008. "Modeling forest leaf-litter decomposition and N mineralization in litterbags, placed across Canada: A 5-model comparison," Ecological Modelling, Elsevier, vol. 219(3), pages 342-360.
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    Cited by:

    1. Zanchi, Giuliana & Belyazid, Salim & Akselsson, Cecilia & Yu, Lin, 2014. "Modelling the effects of management intensification on multiple forest services: a Swedish case study," Ecological Modelling, Elsevier, vol. 284(C), pages 48-59.
    2. Lampa, Martin Erlandsson & Belyazid, Salim & Zanchi, Giuliana & Akselsson, Cecilia, 2019. "Effects of whole-tree harvesting on soil, soil water and tree growth – A dynamic modelling exercise in four long-term experiments," Ecological Modelling, Elsevier, vol. 414(C).
    3. Yu, Lin & Belyazid, Salim & Akselsson, Cecilia & van der Heijden, Gregory & Zanchi, Giuliana, 2016. "Storm disturbances in a Swedish forest—A case study comparing monitoring and modelling," Ecological Modelling, Elsevier, vol. 320(C), pages 102-113.
    4. Murphy, Paul N.C. & Ogilvie, Jae & Meng, Fan-Rui & White, Barry & Bhatti, Jagtar S. & Arp, Paul A., 2011. "Modelling and mapping topographic variations in forest soils at high resolution: A case study," Ecological Modelling, Elsevier, vol. 222(14), pages 2314-2332.
    5. Jutras, Marie-France & Nasr, Mina & Castonguay, Mark & Pit, Christopher & Pomeroy, Joseph H. & Smith, Todd P. & Zhang, Cheng-fu & Ritchie, Charles D. & Meng, Fan-Rui & Clair, Thomas A. & Arp, Paul A., 2011. "Dissolved organic carbon concentrations and fluxes in forest catchments and streams: DOC-3 model," Ecological Modelling, Elsevier, vol. 222(14), pages 2291-2313.

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