Facebook
Twitter
YouTube
Instagram
    • español
    • English
  • Contacto
  • English 
    • español
    • English
  • Login

Inta Digital

Repositorio InstitucionalBiblioteca Digital
AboutAuthorsTitlesSubjectsCollectionsCommunities☰
JavaScript is disabled for your browser. Some features of this site may not work without it.
View Item 
    xmlui.general.dspace_homeCentros Regionales y EEAsCentro Regional Patagonia SurEEA Santa CruzPartes de librosxmlui.ArtifactBrowser.ItemViewer.trail
  • DSpace Home
  • Centros Regionales y EEAs
  • Centro Regional Patagonia Sur
  • EEA Santa Cruz
  • Partes de libros
  • View Item

Soil erosion rates and nutrient loss in rangelands of Southern Patagonia

Abstract
Soil erosion in rangelands is the main driver of desertification as a result of severe drought events and overgrazing reducing potential land productivity. The objectives of this chapter are to provide an overview of soil erosion as it relates to ecosystem services and to determine soil erosion rates from exposed roots of four shrub and dwarf-shrub species in nine sites of Southern Patagonia rangelands (Santa Cruz province, Argentina) as a case study. We [ver mas...]
Soil erosion in rangelands is the main driver of desertification as a result of severe drought events and overgrazing reducing potential land productivity. The objectives of this chapter are to provide an overview of soil erosion as it relates to ecosystem services and to determine soil erosion rates from exposed roots of four shrub and dwarf-shrub species in nine sites of Southern Patagonia rangelands (Santa Cruz province, Argentina) as a case study. We highlight that soil protection is critical to sustain the capacity of rangeland ecosystems to supply provisioning (lamb and cattle meat, sheep wool) supporting (nutrient cycling, biodiversity, habitat) and regulating (carbon fixation, water flow regulation) ecosystem services for human wellbeing. We used a dendrogeomorphological method to determine soil erosion rates against datable exposed roots. Also, in each site soil samples were collected from nine randomly selected points in nondegraded patches to provide reference points from which to calculate loss of soil organic carbon and nutrients from erosion. The soil erosion rate in the degraded areas characterized by dwarf shrubs and shrubs with exposed roots was significantly different between sites and ranged from 1.6 to 4.1 mm year−1. Soil mass loss rate ranged from 12.7 to 32.0 Mg ha−1 year−1 and soil carbon loss fluctuated from 85.3 to 250.1 kg C ha−1 year−1. The main soil nutrient depleted during erosion processes was nitrogen (mean sites value of 17.9 kg N ha−1 year−1) followed by potassium (mean of 9.2 kg K ha−1 year−1) followed by phosphorus (mean of 0.6 kg P ha−1 year−1). These results highlight the need for an early warning system by a soil erosion monitoring entity to prevent soil loss and prescribe sustainable management practices to maintain rangelands in an ecologically healthy state to conserve ecological functions and ecosystem service provision. [Cerrar]
Thumbnail
Author
Peri, Pablo Luis;   Lasagno, Romina Gisele;   Chartier, Marcelo Pablo;   Roig Junent, Fidel Alejandro;   Rosas, Yamina Micaela;   Martinez Pastur, Guillermo José;  
Fuente
The Encyclopedia of Conservation - Reference Module in Earth Systems and Environmental Sciences, Elsevier, Amsterdam, Netherlands. p. 1-8.
Date
2021-11-25
Editorial
Elsevier
ISBN
978-012-40954-8-9
URI
http://hdl.handle.net/20.500.12123/10891
https://www.sciencedirect.com/science/article/pii/B9780128211397001835
DOI
https://doi.org/10.1016/B978-0-12-821139-7.00183-5
Formato
pdf
Tipo de documento
parte de libro
Palabras Claves
Soil; Suelo; Erosion; Erosión; Losses; Pérdidas; Desertification; Desertificación; Ecosystem Services; Servicios de los Ecosistemas; Provisioning Services; Servicios de Abastecimiento; Supporting Services; Servicios de Apoyo; Regulations; Regulaciones; Soil Organic Carbon; Carbono Orgánico del Suelo; Shrubs; Arbustos; Santa Cruz (Argentina); Región Patagónica; PEBANPA Network; Red PEBANPA; Degraded Areas; Áreas Degradadas; Soil Carbon; Carbono del Suelo; Dwarf-shrubs; Sub-arbustos; Exposed Root; Raíces Expuestas; Dendrogeomorphological Method; Método Dendrogeomorfológico;
Derechos de acceso
Restringido
Descargar
Compartir
  • Compartir
    Facebook Email Twitter Mendeley
Excepto donde se diga explicitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Metadata
Show full item record