Changes of Soil Organic Carbon in Various Stages of Vegetation Restoration in Ziwuling Mountain
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    Abstract:

    The soil organic carbon(SOC) contents, distribution of organic carbon in soil aggregates, and organic carbon contribution rates of variously sized soil aggregates were studied during vegetation restoration in Ziwuling Mountain. The results show that the weighted mean of SOC was 3. 54 g/kg for the 0-100cm soil profile of sloped cropland,while the weighted means of SOC of 0-100cm soil profiles of abandoned land, grassland, shrub and arbor phases were 6.8%,36.6%,41.5% and 73.6%, respectively, higher than that of slop cropland. T he increasing magnitudes of SOC contents of 0-20 cm soil layer were higher than those of soil layers below following vegetation restoration.The SOC contents of aggregates of all sizes in the 0-5 and 5-10cm soil layers increased gradually and the SOC enriched in the macroaggregates(>2mm) over time along with vegetation restoration. No clear change of SOC contents in the 10-20 cm soil layer for aggregates of all sizes. The SOC contribution rates of>5, 5~ 2 and 2~ 1mm aggregates in 0-20 cm soil layer of abandoned land, grassland, shrub and arbor were higher than that of sloped cropland, indicating that the increased part of SOC in 0-20 cm soil layer were stored mainly in>1mm aggregates during vegetation restoration.

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马帅,赵世伟,李婷,李晓晓,曾宪芳.子午岭林区不同植被恢复阶段土壤有机碳变化研究[J].水土保持通报英文版,2011,(3):94-98,154

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History
  • Received:October 26,2010
  • Revised:March 11,2011
  • Adopted:
  • Online: November 26,2014
  • Published: