Features and Significance of Organic Molecules in the Primitive Soil of the Carboniferous Mine Spoil with Natural Vegetation

摘要：

The distribution and abundances of soluble organic matter and n-alkanes in samples are influenced by origin and biotransformation. Saturated hydrocarbon of “primitive soil mostly comes from natural vegetation in carboniferous mine spoil. The n-alkanes in “primitive soil show a pronounced ever over odd predominance. The carbon range is wider than the fresh coal gangue. The n-alkanes range in the “primitive soil from C9 to C34 with Cmax at 13, 27(or 15, 29), while the n-alkanes range of the fresh coal gangue from C9 to C30 with a Cmax at 9. During the weathering and soil formation processes of coal gangue, the weathering degree, vegetation types and substrate texture determine the distribution and ratios of n-alkanes. The peak of n-alkanes changes from unimodal to bimodal, the peak values move toward high carbon region, it approach gradually the n-alkanes distribution of the mature soil. The ratio C27/C31 and the distributive characteristics of n-alkanes can express the evolution of vegetation during soil forming process of coal gangue pile and indicate the situation of settlement and growing of natural vegetation.

关键词： carboniferous mine spoil primitive soil n-alkanes natural vegetation

作者: LI Juanjuan TANG Yuegang MA Jintao Lü Zhongliang ZHANG Haiyang ZHU Xingwei

作者单位: Department of Geological Sciences, China University of Mining and Technology, Beijing 100083, China

会议类型: 国际会议

会议名称: 2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-11-13（万方平台首次上网日期，不代表论文的发表时间）