Composition and mineralization of soil organic carbon pools in four single-tree species forest soils
查看参考文献37篇
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文摘
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Forest soil carbon (C) is an important component of the global C cycle. However, the mechanism by which tree species influence soil organic C (SOC) pool composition and mineralization is poorly understood. To understand the effect of tree species on soil C cycling, we assessed total, labile, and recalcitrant SOC pools, SOC chemical composition by ~(13)C nuclear magnetic resonance spectroscopy, and SOC mineralization in four monoculture plantations. Labile and recalcitrant SOC pools in surface (0-10 cm) and deep (40-60 cm) soils in the four forests contained similar content. In contrast, these SOC pools exhibited differences in the subsurface soil (from 10 to 20 cm and from 20 to 40 cm). The alkyl C and O-alkyl C intensities of SOC were higher in Schima superba and Michelia macclurei forests than in Cunninghamia lanceolata and Pinus massoniana forests. In surface soil, S. superba and M. macclurei forests exhibited higher SOC mineralization rates than did P. massoniana and C. lanceolata forests. The slope of the straight line between C_(60) and labile SOC was steeper than that between C_(60) and total SOC. Our results suggest that roots affected the composition of SOC pools. Labile SOC pools also affected SOC mineralization to a greater extent than total SOC pools. |
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来源
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Journal of Forestry Research
,2016,27(6):1277-1285 【核心库】
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DOI
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10.1007/s11676-016-0244-z
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关键词
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~(13)C nuclear magnetic resonance
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Labile soil organic carbon
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Monoculture plantation
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Soil organic carbon mineralization
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Tree species
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地址
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1.
Huitong Experimental Station of Forest Ecology, Chinese Academy of Sciences, Shenyang, 110016
2.
Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1007-662X |
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学科
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林业 |
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基金
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国家自然科学基金
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国家973计划
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文献收藏号
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CSCD:5849371
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37
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