Fersiynau electronig

Dangosydd eitem ddigidol (DOI)

  • Tida Ge
    Chinese Academy of Sciences and Ministry of Water Resources
  • Chinese Academy of Hunan.
    Chinese Academy of Sciences, Hunan.
  • Hongzhao Yuan
    Chinese Academy of Sciences, Hunan.
  • Baozhen Li
    Chinese Academy of Sciences, Hunan.
  • Hanhua Zhu
    Chinese Academy of Sciences, Hunan.
  • Peiqin Peng
    Central South University of Forestry and Technology, Changsha
  • Kelin Li
    Central South University of Forestry and Technology, Changsha
  • Davey L. Jones
  • Jinshui Wu
    Chinese Academy of Sciences, Hunan.
Maintaining a diverse functional and taxonomic microbial community in central to preserving soil quality and for ensuring food security. Growing evidence suggests that organic farming systems possess higher quality soils with robust microbial activity in comparison to conventionally managed systems. Although plastic tunnel greenhouses are widely used, their effects on microbial communities are largely unknown. We examined how four treatments impacted soils and their microbial communities: (1) organic management in greenhouses (Or-Gr) and (2) open fields (Or-Op), and (3) conventional management in greenhouses (Co-Gr) and (4) open fields (Co-Op). We measured physicochemical and microbiological parameters, community-level physiological profiles, and phospholipid fatty acid (PLFAs) contents of soils (0–20 cm depth). Both organic and greenhouse management significantly increased total organic C (SOC), total N, microbial biomass C (MBC) and N (MBN), and basal- and substrate-induced respiration (P < 0.05). Or-Gr had significantly higher total, bacterial (both Gram-positive and -negative), and fungal PLFA concentrations (P < 0.05) than the other treatments. Generally, soil quality followed the series Or-Gr > Or-Op > Co-Gr > Co-Op. MBC, MBN, and PLFA concentrations were positively correlated (r > 0.90, P < 0.01) with SOC, total N, and cation exchange capacity and negatively with soil pH. Organic and greenhouse management had a significant interaction effect. Our findings suggest that greenhouse management should be promoted for food security.

Allweddeiriau

Iaith wreiddiolSaesneg
Tudalennau (o-i)122-128
CyfnodolynEuropean Journal of Soil Biology
Cyfrol58
Dyddiad ar-lein cynnar14 Awst 2013
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 30 Medi 2013
Gweld graff cysylltiadau