Home > Archive>Volume 23, Issue 2, 2015 >176-182. DOI:10.11926/j.issn.1005-3395.2015.02.009
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Soil Respiration and Its Seasonal Variation among Five Young Plantations in South China
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South China Botanical Garden, Chinese Academy of Sciences,South China Botanical Garden, Chinese Academy of Sciences,South China Botanical Garden, Chinese Academy of Sciences,South China Botanical Garden, Chinese Academy of Sciences,South China Botanical Garden, Chinese Academy of Sciences,South China Botanical Garden, Chinese Academy of Sciences

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    Abstract:

    In order to understand the mechanisms of soil carbon sequestration of plantations in South China, the total soil respiration (Rs) and autotrophic respiration (Ra) and their seasonal dynamics of five plantations in Heshan, Guangdong at 2-5-year-old were studied from 2007 to 2012. The plantations include Eucalyptus urophylla plantation, 30 species mixed plantation, 10 species mixed plantation Castanopsis hystrix plantation, and Acacia crassicarpa plantation. The results showed that average Rs, Ra and contribution rate of Ra to Rs (RC) of these plantations ranged within 81.3-103.9 mg C m-2h-1, 11.2-22.3 mg C m-2h-1, and 12.4%-26.9%, respectively. The average Rs in wet season of these plantations were 311.4% higher than that in dry season; while Ra and RC had not significant difference between wet and dry seasons. The soil temperature in wet season had significant relation with Rs among five plantations, which explained the variation of Rs for 90.2%, but they had no relation in dry season. The difference of microenvironment and soil condition among these young plantations was no obvious, in which soil was still restoring from disturbance, so that soil respiration had no significant difference among five plantations.

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余世钦,王晓丽,林永标,饶兴权,傅声雷,周丽霞.华南地区5种人工幼林的土壤呼吸及其季节性变化[J].热带亚热带植物学报,2015,23(2):176~182

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History
  • Received:April 28,2014
  • Revised:April 28,2014
  • Adopted:October 22,2014
  • Online: April 02,2015
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