Lagged precipitation effect on plant productivity is influenced collectively by climate and edaphic factors in drylands - Ecole Nationale du Génie de l'Eau et de l'Environnement de Strasbourg Accéder directement au contenu
Article Dans Une Revue Science of the Total Environment Année : 2021

Lagged precipitation effect on plant productivity is influenced collectively by climate and edaphic factors in drylands

Lei He
  • Fonction : Auteur
Xunming Wang
  • Fonction : Auteur
Yaowen Xie
  • Fonction : Auteur
Jian-Sheng Ye
  • Fonction : Auteur

Résumé

Lagged precipitation effect explains a large proportion of annual aboveground net primary productivity in some dryland ecosystems. Using satellite-derived plant productivity and precipitation datasets in the Northern Hemisphere drylands during 2000-2018, we identify 1111 pixels mainly located in the Tibetan Plateau, the western US, and Kazakhstan where productivities are significantly correlated with previous-year precipitation (hereafter, the lagged type). Differences in climatic and edaphic factors between the lagged and unlagged (pixels where productivities are not correlated with previous-year precipitation) types are evaluated. Permutational multivariate analysis of variance shows that the two types differ significantly regarding six climatic and edaphic factors. Compared to unlagged type, water availability, soil organic carbon, total nitrogen, field capacity, silt content and radiation are more sensitive to changes in precipitation in lagged type. Water availability is the most important factor for distinguishing the two types, followed by soil organic carbon, total nitrogen, field capacity, soil texture, and radiation. Our study suggests that the altered sensitivities of several climatic and edaphic factors to precipitation collectively affect the lagged effect of precipitation on productivity in drylands.
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Dates et versions

hal-03005961 , version 1 (24-11-2020)

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Lei He, Zhao-Liang Li, Xunming Wang, Yaowen Xie, Jian-Sheng Ye. Lagged precipitation effect on plant productivity is influenced collectively by climate and edaphic factors in drylands. Science of the Total Environment, 2021, 755, pp.142506. ⟨10.1016/j.scitotenv.2020.142506⟩. ⟨hal-03005961⟩
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