您好，欢迎访问吉林省农业科学院 机构知识库！
吉林省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Effects of temperature on soil organic carbon fractions contents, aggregate stability and structural characteristics of humic substances in a Mollisol

文献类型： 外文期刊

作者： Wang, Yong 1 ; Gao, Shuqing 1 ; Li, Cuilan 1 ; Zhang, Jinjing 1 ; Wang, Lichun 2 ;

作者机构： 1.Jilin Agr Univ, Coll Resource & Environm Sci, Changchun 130118, Peoples R China

2.Jilin Acad Agr Sci, Inst Agr Resources & Environm, Changchun 130124, Peoples R China

关键词： Humic acid;Humin;Laboratory incubation;Mean weight diameter;NMR

期刊名称：JOURNAL OF SOILS AND SEDIMENTS （ 影响因子：3.308； 五年影响因子：3.586 ）

ISSN： 1439-0108

年卷期： 2016 年 16 卷 7 期

页码：

收录情况： SCI

摘要： Purpose Under a global warming scenario, understanding the response of soil organic carbon fractions and aggregate stability to temperature increases is important not only for better understanding and maintaining relevant ecosystem services like soil fertility and crop productivity, but also for understanding key environmental processes intimately related with the maintenance of other regulatory ecosystem services like global climate change mitigation through carbon sequestration. An increase in temperature would accelerate the mineralization of soil organic carbon. However, the properties of organic carbon remained in soil after mineralization is not well known. Materials and methods Mollisol was collected at 0-20-cm depth from maize (Zea mays L.) field in Northeast China. A 180-day incubation experiment was conducted at three different temperatures (10, 30, and 50 degrees C) under constant soil moisture (60% water holding capacity). Soil samples were assayed for total organic carbon (TOC), water-soluble organic carbon (WSOC), easily oxidizable organic carbon (EOC), humic fractions carbon, aggregate-associated carbon, and water stability of aggregates. Elemental analysis and solid-state C-13 nuclear magnetic resonance spectroscopy were used to characterize humic acid and humin fractions. Results and discussion The contents of soil TOC, EOC, humic fractions carbon, and aggregate-associated carbon decreased with the increase in temperature. The proportion of 2-0.25-mm macroaggregate and the mean weight diameter (MWD) of aggregates also decreased. The C, H, N, S, alkyl C, and O-alkyl C contents of humic acid and humin decreased, whereas the O, aromatic C, and carbonyl C contents increased. The H/C, aliphatic C/aromatic C, and O-alkyl C/aromatic C ratios in humic acid and humin fractions decreased. Conclusions The increase in temperature has a negative impact on soil organic carbon content, soil aggregation, and aggregate stability. Moreover, humic acid and humin molecules become less aliphatic and more decomposed with the increase in temperature.

  • 相关文献

[1]Thermodynamics of Cu2+ Adsorption on soil Humin. Ji, F.,Zhang, J. J.,Wang, S.,Wang, L. C.. 2015

[2]Moisture Effect on Soil Humus Characteristics in a Laboratory Incubation Experiment. Li, Cuilan,Gao, Shuqing,Zhang, Jinjing,Zhao, Lanpo,Li, Cuilan,Gao, Shuqing,Zhang, Jinjing,Zhao, Lanpo.

[3]Adsorption of Cu(II) on humic acids derived from different organic materials. Ji Fan,Zhang Jin-jing,Gao Qiang,Wu Jing-gui,Zhao Lan-po,Wang Shuai,Wang Li-chun,Zheng Li-rong. 2015

[4]Comprehensive separation and identification of chemical constituents from Apocynum venetum leaves by high-performance counter-current chromatography and high performance liquid chromatography coupled with mass spectrometry. Zhang, Yuchi,Liu, Chunming,Wang, Jing,Wu, Guimei,Li, Sainan,Zhang, Zhengkun.

[5]Structural studies of the exopolysaccharide from Lactobacillus plantarum C88 using NMR spectroscopy and the program CASPER. Fontana, Carolina,Widmalm, Goran,Li, Shengyu,Yang, Zhennai.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：吉林省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台