高寒草甸植物正构烷烃特征分析

doi:10.11686/cyxb2016036

草业学报 ›› 2016, Vol. 25 ›› Issue (6): 136-147.DOI: 10.11686/cyxb2016036

高寒草甸植物正构烷烃特征分析

段中华^{1, 2, 3}, 全小龙¹, 乔有明^{1*, *}, 裴海昆³, 何桂芳¹

1.青海大学生态环境工程学院,青海西宁 810016;
2.三江源生态和高原农牧业国家重点实验室,青海西宁 810016;
3.青海大学分析测试中心,青海西宁 810016

收稿日期:2016-01-21 修回日期:2016-03-08 出版日期:2016-06-20 发布日期:2016-06-20
通讯作者: E-mail:ymqiao@aliyun.com
作者简介:段中华(1980-),男,湖南邵阳人,副教授,在读博士。E-mail:zhonghuaduan@126.com
基金资助:
国家自然基金项目(31260573),青海省科技厅国际合作项目(2012-H-806),教育部创新团队(IRT13074)和教育部美大项目(2014)资助

Characterization of plant n-alkanes in alpine meadow

DUAN Zhong-Hua^{1, 2, 3}, QUAN Xiao-Long¹, QIAO You-Ming^{1, *}, PEI Hai-Kun³, HE Gui-Fang¹

1.College of Eco-Environmental Engineering, Qinghai University, Xining 810016, China;
2.Stake Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China;
3.Instrumental Analysis Center of Qinghai University, Xining 810016, China

Received:2016-01-21 Revised:2016-03-08 Online:2016-06-20 Published:2016-06-20

摘要/Abstract

摘要： 为研究高寒草甸植物正构烷烃分布特征,对采自黄河源区高寒草甸的58种植物进行了测定和分析。结果表明,单种植物中正构烷烃的碳数在C₈和C₄₀之间,含量分布范围为0.81~22.88 mg/kg,其中碳数为C₂₇、C₂₉、C₃₁、C₃₃正构烷烃的含量均较高;总正构烷烃(C_total)含量变化范围为35.00~78.64 mg/kg,长链正构烷烃(C_25-36)含量范围为16.11~58.68 mg/kg,条叶垂头菊中总正构烷烃和长链正构烷烃含量最小,而阿尔泰狗娃花含量最大。58种植物中含量最高的正构烷烃(C_max)分布特征为:C₁₉有1种,C₂₂有2种,C₂₇有2种,C₂₉有23种,C₃₁有27种,C₃₂有1种,C₃₃有2种。植物中正构烷烃总正构烷烃碳优势指数(CPI_total)范围为1.07~4.32,CPI_25-36范围为1.12~8.20,总的正构烷烃平均碳链长度(ACL_total)范围为23.52~27.22,ACL_27-33范围为28.03~31.07,蜡质指数(P_wax)变化范围为0.60~0.92。植物中长链正构烷烃丰富,奇数碳含量分布优势明显。

Abstract: Alpine meadow plants were collected and analysed to characterize the n-alkanes present. The results showed that the carbon number of n-alkanes of individual plants varied from C₈ to C₄₀ and n-alkanes content ranged from 0.8 to 22.9 mg/kg. The C₂₇, C₂₉, C₃₁ and C₃₃ n-alkanes contents were greater than that of remaining n-alkanes; total n-alkane (C_total) ranged from 35.0 to 78.6 mg/kg, while the long chain n-alkane (C_25-36) content ranged from 16.1 to 58.7 mg/kg. The total n-alkane and long chain n-alkane content was highest in Heteropappus altaicus and least in Cremanthodium lineare. Analysis of the n-alkane distribution of the Cmax among 58 plants sampled revealed one species with a C_max of C₁₉, two species with C₂₂, two species with C₂₇, 23 species with C₂₉, 27 species with C₃₁, one species with C₃₂ and two species with C₃₃. The CPI_total ranged from 1.1 to 4.3, and the CPI_25-36 from 1.1 to 8.2. The ACL_total ranged from 23.5 to 27.2, and the ACL_27-33 from 28.0 to 31.1. The P_max ranged from 0.6 to 0.9. The sampled plants contained abundant long-chain n-alkanes with a significant odd carbon number preference.

段中华, 全小龙, 乔有明, 裴海昆, 何桂芳. 高寒草甸植物正构烷烃特征分析[J]. 草业学报, 2016, 25(6): 136-147.

DUAN Zhong-Hua, QUAN Xiao-Long, QIAO You-Ming, PEI Hai-Kun, HE Gui-Fang. Characterization of plant n-alkanes in alpine meadow[J]. Acta Prataculturae Sinica, 2016, 25(6): 136-147.

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高寒草甸植物正构烷烃特征分析

Characterization of plant n-alkanes in alpine meadow

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