Soil microbial parameters and stability of soil aggregate fractions under different grassland communities on the Loess Plateau, China

Abstract: Over-grazing and large-scale monocultures on the Loess plateau in China have caused serious soil erosion by water and wind. Grassland revegetation has been reported as one of the most effective counter measures. Therefore, we investigated soil aggregation, aggregate stability and soil microbial activities as key parameters for soil remediation through grassland revegetation. The results showed that soil microbial biomass carbon (Cmic) and microbial biomass nitrogen (Nmic) increased under revegetated grass communities compared to cropland and overgrazed pastures and were higher in surface layers (0–10 cm) than in the subsurface (10–20 cm). Although there are variations between the four investigated grassland communities, their values were 10 to 50 times higher in comparison to the cropland and overgrazed pastures, similar to the increase in soil enzyme activities, such as β-glucosidase and β-glucosaminidase. Soil aggregate stability (SAS) showed clear differences between the different land uses with two main soil aggregate fractions measured by ultra sound: < 63 μm and 100–250 μm, with approximately 70% and 10% of the total soil volume respectively. We also found positive correlations between SAS and soil microbial parameters, such as Cmic, Nmic, and soil enzyme activities. From this, we concluded that revegetation of eroded soils by grasses accelerates soil rehabilitation.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Soil microbial parameters and stability of soil aggregate fractions under different grassland communities on the Loess Plateau, China ; volume:64 ; number:3 ; year:2009 ; pages:424-427 ; extent:4
Biologia ; 64, Heft 3 (2009), 424-427 (gesamt 4)

Urheber
An, Shao-shan
Mentler, Axel
Acosta-Martínez, Veronica
Blum, Winfried

DOI
10.2478/s11756-009-0112-9
URN
urn:nbn:de:101:1-2409221627069.660785357557
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:28 MESZ

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Beteiligte

  • An, Shao-shan
  • Mentler, Axel
  • Acosta-Martínez, Veronica
  • Blum, Winfried

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