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Journal of Analytical Methods in Chemistry
Volume 2016 (2016), Article ID 1480857, 10 pages
http://dx.doi.org/10.1155/2016/1480857
Research Article

Spectroscopic Characteristics of Dissolved Organic Matter in Afforestation Forest Soil of Miyun District, Beijing

1College of Forestry, Beijing Forestry University, Beijing 100083, China
2Key Laboratory of Urban Stormwater System, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
3Beijing Industrial Technician College, Beijing 100023, China

Received 6 April 2016; Accepted 30 May 2016

Academic Editor: Miguel de la Guardia

Copyright © 2016 Shi-Jie Gao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study, soil samples collected from different plain afforestation time (1 year, 4 years, 10 years, 15 years, and 20 years) in Miyun were characterized, including total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), available K (K+), microbial biomass carbon (MBC), and dissolved organic carbon (DOC). The DOM in the soil samples with different afforestation time was further characterized via DOC, UV-Visible spectroscopy, excitation-emission matrix (EEM) fluorescence spectroscopy, and 1H NMR spectroscopy. The results suggested that the texture of soil sample was sandy. The extracted DOM from soil consisted mainly of aliphatic chains and only a minor aromatic component. It can be included that afforestation can improve the soil quality to some extent, which can be partly reflected from the indexes like TOC, TN, TP, K+, MBC, and DOC. And the characterization of DOM implied that UV humic-like substances were the major fluorophores components in the DOM of the soil samples, which consisted of aliphatic chains and aromatic components with carbonyl, carboxyl, and hydroxyl groups.