Global vulnerability of soil ecosystems to erosion

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygl

Fersiynau electronig

Dogfennau

Dangosydd eitem ddigidol (DOI)

  • Carlos A. Guerra
    Martin-Luther University, Halle-Wittenberg
  • Isabel Rosa
  • Emiliana Valentini
    Institute for Environmental Protection and Research (ISPRA), Rome
  • Florian Wolf
    Martin-Luther University, Halle-Wittenberg
  • Federico Filipponi
    Institute for Environmental Protection and Research (ISPRA), Rome
  • Dirk N. Karger
    University of Zurich
  • Alessandra Nguyen Xuan
    Institute for Environmental Protection and Research (ISPRA), Rome
  • Jerome Mathieu
    Sorbonne Universités
  • Patrick Lavelle
    Sorbonne Universités
  • Nico Eisenhauer
    German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig

Context: Soil erosion is one of the main threats driving soil degradation across the globe with important impacts on crop yields, soil biota, biogeochemical cycles, and ultimately human nutrition.

Objectives: Here, using an empirical model, we present a global and temporally explicit assessment of soil erosion risk according to recent (2001-2013) dynamics of rainfall and vegetation cover change to identify vulnerable areas for soils and soil biodiversity.

Methods: We used an adaptation of the Universal Soil Loss Equation together with state of the art remote sensing models to create a spatially and temporally explicit global model of soil erosion and soil protection. Finally, we overlaid global maps of soil biodiversity to assess the potential vulnerability of these soil communities to soil erosion.

Results: We show a consistent decline in soil erosion protection over time across terrestrial biomes, which resulted in a global increase of 11.7% in soil erosion rates. Notably, soil erosion risk systematically increased between 2006 and 2013 in relation to the baseline year (2001). Although vegetation cover is central to soil protection, this increase was mostly driven by changes in rainfall erosivity. Globally, soil erosion is expected not only to have an impact on the vulnerability of soil conditions but also on soil biodiversity with 6.4% (for soil macrofauna) and 7.6% (for soil fungi) of these vulnerable areas coinciding with regions with high soil biodiversity.

Conclusions: Our results indicate that an increasing proportion of soils are degraded globally, affecting not only livelihoods but also potentially degrading local and regional landscapes. Similarly, many degraded regions coincide with and may have impacted high levels of soil biodiversity.

Allweddeiriau

Iaith wreiddiolSaesneg
Tudalennau (o-i)823-842
Nifer y tudalennau20
CyfnodolynLandscape Ecology
Cyfrol35
Rhif y cyfnodolyn4
Dyddiad ar-lein cynnar10 Maw 2020
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - Ebr 2020

Cyfanswm lawlrlwytho

Nid oes data ar gael
Gweld graff cysylltiadau