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Soil net nitrogen mineralisation across global grasslands

Abstract:

Soil nitrogen mineralisation (N<inf>min</inf>), the conversion of organic into inorganic N, is important for productivity and nutrient cycling. The balance between mineralisation and immobilisation (net N<inf>min</inf>) varies with soil properties and climate. However, because most global-scale assessments of net N<inf>min</inf> are laboratory-based, its regulation under field-conditions and implications for real-world soil functioning remain uncertain. Here, we explore the drivers of realised (field) and potential (laboratory) soil net N<inf>min</inf> across 30 grasslands worldwide. We find that realised N<inf>min</inf> is largely explained by temperature of the wettest quarter, microbial biomass, clay content and bulk density. Potential N<inf>min</inf> only weakly correlates with realised N<inf>min</inf>, but contributes to explain realised net N<inf>min</inf> when combined with soil and climatic variables. We provide novel insights of global realised soil net N<inf>min</inf> and show that potential soil net N<inf>min</inf> data available in the literature could be parameterised with soil and climate data to better predict realised N<inf>min</inf>.

Año de publicación:

2019

Keywords:

    Fuente:

    scopusscopus
    googlegoogle

    Tipo de documento:

    Article

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Mecánica de suelos
    • Ecología
    • Fertilidad del suelo

    Áreas temáticas de Dewey:

    • Técnicas, equipos y materiales
    • Ecología
    • Economía de la tierra y la energía
    Procesado con IAProcesado con IA

    Objetivos de Desarrollo Sostenible:

    • ODS 15: Vida de ecosistemas terrestres
    • ODS 13: Acción por el clima
    • ODS 2: Hambre cero
    Procesado con IAProcesado con IA

    Contribuidores:

    Collins S.L.Collins S.L.
    Power S.A.Power S.A.
    Siebert J.Siebert J.
    Harpole W.S.Harpole W.S.
    Zimmermann S.Zimmermann S.
    Tognetti P.M.Tognetti P.M.
    McCulley R.L.McCulley R.L.
    Knops J.M.H.Knops J.M.H.
    di Virgilio A.di Virgilio A.
    Eisenhauer N.Eisenhauer N.
    Blair J.M.Blair J.M.
    Caldeira M.C.Caldeira M.C.
    Virtanen R.Virtanen R.
    Speziale K.L.Speziale K.L.
    Stevens C.J.Stevens C.J.
    Esch E.Esch E.
    Adler P.B.Adler P.B.
    Schütz M.Schütz M.
    Selene BáezSelene Báez
    Hautier Y.Hautier Y.
    Seabloom E.W.Seabloom E.W.
    Hagedorn F.Hagedorn F.
    J. M. BlairJ. M. Blair
    Biederman L.A.Biederman L.A.
    Risch A.C.Risch A.C.
    Borer E.T.Borer E.T.
    Ochoa-Hueso R.Ochoa-Hueso R.
    Brown C.S.Brown C.S.
    Frey B.Frey B.
    Ebeling A.Ebeling A.
    Roscher C.Roscher C.
    Broadbent A.A.D.Broadbent A.A.D.
    Eskelinen A.Eskelinen A.
    Kirkman K.P.Kirkman K.P.
    Moser B.Moser B.
    Daleo P.Daleo P.
    Sankaran M.Sankaran M.
    Hagenah N.Hagenah N.
    Yahdjian L.Yahdjian L.
    Silveira M.L.Silveira M.L.
    Firn J.L.Firn J.L.
    Moore J.L.Moore J.L.
    Prober S.M.Prober S.M.
    MacDougall A.S.MacDougall A.S.
    Fay P.A.Fay P.A.