期刊
SOIL BIOLOGY & BIOCHEMISTRY
卷 40, 期 12, 页码 2937-2947出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2008.08.008
关键词
Soil horizons; Volatile isoprenoids; Pinus halepensis; Pinus root extracts; Pinus litter extracts; Soil terpene distribution
类别
资金
- Fundacio Abertis 2007 [CGL2004-01402/BOS]
- Spanish MEC [CGL2006-04025/BOS]
- ISONET European Commission [MC-RTN-CT-2003-504720]
- European Commission [ALARM 506675]
- European project NITROEUROPE [GOCE017841]
- Fundacion BBVA 2004
- Catalan Government [SGR2005-003/12]
- Natural Environment Research Council [ceh010023] Funding Source: researchfish
We measured the terpene concentration in pentane and water extracts from soil horizons (litter, organic, top and low mineral) and from roots growing in top and low mineral horizons on a distance gradient from Pinus halepensis L, trees growing alone on a grassland. Terpene concentrations in pentane were higher than in water extracts, although beta-caryophyllene showed relatively high solubility in water. The litter and roots were important sources of terpenes in soil. Alpha-pinene dominated in roots growing in both top (A1) and low (B) mineral horizons (123 +/- 36 mu g g(-1) or 14 +/- 5 mg m(-2)) and roots in low mineral horizon (270 +/- 91 mu g(-1) or 7 +/- 2 mg m(-2)). Beta-caryophyllene dominated in litter (1469 +/- 331 mu g g(-1) or 2004 +/- 481 mg m(-2)). Terpene concentration in soil decreased with increasing distance to the trunk. This is likely to be related to changes in litter and roots type on the distance gradient from pine to grass and herbs. The relative contributions of all compounds, except alpha-pinene, were similar in the mineral soils and litter. This suggests that litter of P. halepensis is probably the main source of major terpene compounds. However, long-term emissions of alpha-pinene from P halepensis roots might also contribute to alpha-pinene concentrations in rhizosphere soils. (c) 2008 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据