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武夷山不同海拔土壤水溶性有机物的紫外一可见光谱特征(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2008年04期
Page:
23-27
Column:
研究论文
publishdate:
2008-07-20

Article Info:/Info

Title:
Ultraviolet-visible spectroscopic characteristics of soil water-soluble organic matter with an elevation gradient in Wuyi Mountain
Article ID:
1000-2006(2008)04-0023-05
Author(s):
ZHOU Yan1 FU Li-na1 RUAN Hong-hua1* XU Xian-gen1 WANG Jia-she2 FANG Yan-hong2 WU Yan-yu2 XU Zi-kun2
1. Nanjing Forestry University, Jiangsu Key Laboratory of Forestry Ecological Engineering, Nanjing 210037, China; 2. Administrative Bureau of Wuyishan National Nature Reserve, Wuyishan 354300 China
Keywords:
Elevation gradieuts Vegetation types Water-soluble organic carbon Ultraviolet-visible absorption spectra Wuyi Mountain
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2008.04.005
Document Code:
A
Abstract:
Water-soluble organic carbon (WSOC) was as an important component in the transport and supply of carbon (C) to microorganisms and played a major role the cycle of soil organic matter. The concentration and ultraviolet-visible spectroscopic characteristics of soil water-soluble organic carbon among four vegetation types with an elevation gradients in Wuyi Mountain southeastern China were investigated. The results showed that among the wave length of 230--665 mm, the UV-visible spectra absorption value of soil water-soluble organic matter from four vegetation types, with an eleration gradients decreased with wavelength increasing. A peak at about 230 nm was observed in all cases. The E240/E420 and E230/E250 ratios of soil water-soluble organic matter from different sources were significant difference. The concentration of water-soluble organic carbon from the same elevation had a significantly linear and positive correlation with E230 (R from O. 819 to 0. 999, P<0. O1). The concentration of water-soluble organic carbon could be estimated using E230.

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Last Update: 2013-05-20