HallemaRousseauGumiereEtAl2014

Reference

Hallema, D.W., Rousseau, A.N., Gumiere, S.J., Periard, Y., Hiemstra, P.H., Bouttier, L., Fossey, M., Paquette, A., Cogliastro, A. and Olivier, A. (2014) Framework for studying the hydrological impact of climate change in an alley cropping system. Journal of Hydrology, 517:547-556. (Scopus )

Abstract

Alley cropping is an agroforestry practice whereby crops are grown between hedgerows of trees planted at wide spacings. The local climate and the physiological adaptation mechanisms of the trees are key factors in the growth and survival of the trees and intercrops, because they directly affect the soil moisture distribution. In order to evaluate the long-term hydrological impact of climate change in an alley cropping system in eastern Canada, we developed a framework that combines local soil moisture data with local projections of climate change and a model of soil water movement, root uptake and evapotranspiration. Forty-five frequency domain reflectometers (FDR) along a transect perpendicular to the tree rows generated a two-year dataset that we used for the parameterization and evaluation of the model. An impact study with simulations based on local projections of three global and one regional climate simulation suggest that the soil becomes drier overall in the period between 2041 and 2070, while the number of critically wet periods with a length of one day increases slightly with respect to the reference period between 1967 and 1996. Hydrological simulations based on a fourth climate scenario however point toward wetter conditions. In all cases the changes are minor. Although our simulations indicate that the experimental alley cropping system will possibly suffer drier conditions in response to higher temperatures and increased evaporative demand, these conditions are not necessarily critical for vegetation during the snow-free season. © 2014 Elsevier B.V.

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@ARTICLE { HallemaRousseauGumiereEtAl2014,
    AUTHOR = { Hallema, D.W. and Rousseau, A.N. and Gumiere, S.J. and Periard, Y. and Hiemstra, P.H. and Bouttier, L. and Fossey, M. and Paquette, A. and Cogliastro, A. and Olivier, A. },
    TITLE = { Framework for studying the hydrological impact of climate change in an alley cropping system },
    JOURNAL = { Journal of Hydrology },
    YEAR = { 2014 },
    VOLUME = { 517 },
    PAGES = { 547-556 },
    NOTE = { cited By 2 },
    ABSTRACT = { Alley cropping is an agroforestry practice whereby crops are grown between hedgerows of trees planted at wide spacings. The local climate and the physiological adaptation mechanisms of the trees are key factors in the growth and survival of the trees and intercrops, because they directly affect the soil moisture distribution. In order to evaluate the long-term hydrological impact of climate change in an alley cropping system in eastern Canada, we developed a framework that combines local soil moisture data with local projections of climate change and a model of soil water movement, root uptake and evapotranspiration. Forty-five frequency domain reflectometers (FDR) along a transect perpendicular to the tree rows generated a two-year dataset that we used for the parameterization and evaluation of the model. An impact study with simulations based on local projections of three global and one regional climate simulation suggest that the soil becomes drier overall in the period between 2041 and 2070, while the number of critically wet periods with a length of one day increases slightly with respect to the reference period between 1967 and 1996. Hydrological simulations based on a fourth climate scenario however point toward wetter conditions. In all cases the changes are minor. Although our simulations indicate that the experimental alley cropping system will possibly suffer drier conditions in response to higher temperatures and increased evaporative demand, these conditions are not necessarily critical for vegetation during the snow-free season. © 2014 Elsevier B.V. },
    AUTHOR_KEYWORDS = { Alley cropping; Climate change; Frequency domain reflectometry; Hydrological modeling; HYDRUS },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.jhydrol.2014.05.065 },
    KEYWORDS = { Alley cropping; Frequency domain reflectometry; Hydrological impacts; Hydrological modeling; HYDRUS, Climate change, adaptation; agroforestry; climate change; data set; growth response; hedgerow; hydrological modeling; hydrological response; intercropping; model validation; simulation; soil moisture; survival; alley cropping; evapotranspiration; regional climate; soil water, Canada },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904894134&doi=10.1016%2fj.jhydrol.2014.05.065&partnerID=40&md5=c258448eba5e5aa81147d28751ea8427 },
}

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