{"controller"=>"catalog", "action"=>"show", "locale"=>"da", "id"=>"255352092"}
  • EN
  • DA

Den DanskeForskningsdatabase

  • Søgning Publikationer & Forskere
  • Open Access Indikator
  • Publikationer
  • Forskere
Eksempel Finder dokumenter
water{} som indeholder ordet "water".
water supplies"{}" som indeholder tekststrengen "water supplies".
forfatter:"Doe, John"forfatter:"{}" som indeholder tekststrengen "Doe, John" i feltet: Forfatter.
titel:IEEEtitel:{} som indeholder ordet "IEEE" i feltet: Titel.
Brug for mere hjælp? Avanceret søgning
  • Udvalgte (0)
  • Historik

Priming of soil carbon decomposition in two inner Mongolia grassland soils following sheep dung addition: A study using13C natural abundance approach

    • Gem til Mendeley
    • Eksportér til BibTeX
    • Eksportér til RIS
    • Email citering
Forfattere:
  • Ma, Xiuzhi ;
    Close
    Inner Mongolia Agricultural University
  • Ambus, Per ;
    Close
    Department of Chemical and Biochemical Engineering, Technical University of Denmark
  • Wang, Shiping ;
    Close
    Chinese Academy of Sciences
  • Wang, Yanfen ;
    Close
    Chinese Academy of Sciences
  • Wang, Chengjie
    Close
    Inner Mongolia Agricultural University
DOI:
10.1371/journal.pone.0078578
Resumé:
To investigate the effect of sheep dung on soil carbon (C) sequestration, a 152 days incubation experiment was conducted with soils from two different Inner Mongolian grasslands, i.e. a Leymus chinensis dominated grassland representing the climax community (2.1% organic matter content) and a heavily degraded Artemisia frigida dominated community (1.3% organic matter content). Dung was collected from sheep either fed on L. chinensis (C3 plant with δ13C = -26.8‰; dung δ13C = -26.2‰) or Cleistogenes squarrosa (C4 plant with δ13C = -14.6‰; dung δ13C = -15.7‰). Fresh C3 and C4 sheep dung was mixed with the two grassland soils and incubated under controlled conditions for analysis of 13C-CO2 emissions. Soil samples were taken at days 17, 43, 86, 127 and 152 after sheep dung addition to detect the δ 13C signal in soil and dung components. Analysis revealed that 16.9% and 16.6% of the sheep dung C had decomposed, of which 3.5% and 2.8% was sequestrated in the soils of L. chinensis and A. frigida grasslands, respectively, while the remaining decomposed sheep dung was emitted as CO 2. The cumulative amounts of C respired from dung treated soils during 152 days were 7-8 times higher than in the un-amended controls. In both grassland soils, ca. 60% of the evolved CO2 originated from the decomposing sheep dung and 40% from the native soil C. Priming effects of soil C decomposition were observed in both soils, i.e. 1.4 g and 1.6 g additional soil C kg-1 dry soil had been emitted as CO2 for the L. chinensis and A. frigida soils, respectively. Hence, the net C losses from L. chinensis and A. frigida soils were 0.6 g and 0.9 g C kg-1 soil, which was 2.6% and 7.0% of the total C in L. chinensis and A. frigida grasslands soils, respectively. Our results suggest that grazing of degraded Inner Mongolian pastures may cause a net soil C loss due to the positive priming effect, thereby accelerating soil deterioration. © 2013 Ma et al.
Type:
Tidsskrift-artikel
Sprog:
Engelsk
Udgivet i:
P L O S One, 2013, Vol 8, Issue 11
Emneord:
Agricultural and Biological Sciences (all); Biochemistry, Genetics and Molecular Biology (all); Medicine (all)
Hovedforskningsområde:
Science/technology
Publikationsstatus:
Publiceret
Review type:
Peer Review
Indberetningsår:
2013
Videnskabeligt niveau:
Videnskabelig
ID:
255352092

Fuldtekstadgang

  • Openaccess Danmarks Tekniske Universitet
  • Doi Hent forlagsudgave gennem DOI-opslag
Tjekker on-site adgang...

On-site adgang

Hos forskningsinstitution

  • Technical university of dk

Metrics

Feedback

Sitemap

  • Søgning
    • Statistik
    • Vejledning
    • Data
    • FAQ
    • Kontakt
  • Open Access
    • Oversigt
    • Udvikling
    • FAQ
    • Kontakt
  • Om Basen
    • Institutioner
    • Release historie
    • Cookie- og privatlivspolitik

Copyright © 1998–2017.

Fivu da