干旱区生态环境知识资源中心(Arid): 干旱半干旱地区湖泊周围盐碱土固体表面荧光光谱特征研究

Arid

	干旱半干旱地区湖泊周围盐碱土固体表面荧光光谱特征研究
其他题名	Study on Solid Surface Fluorescence Characteristic of Saline Soils around Lakes in Arid and Semiarid Regions
	于会彬; 席北斗; 魏自民; 马文超; 何小松; 郭旭晶; 刘鸿亮
来源期刊	光谱学与光谱分析
ISSN	1000-0593
出版年	2010
卷号	30 期号:10 页码:2680-2684
中文摘要	荧光是由具有芳香结构或共轭生色团以及未饱和脂肪链的物质产生的,可以评价土壤腐殖化程度. 该技术广泛用于检测土壤腐殖质水溶液荧光,很少用于直接检测土壤固体表面荧光. 本文选取乌梁素海周围盐角草、碱蓬、盐爪爪和苦豆子群落的土壤作为研究对象,分别采集0~20,20~40和40~60 cm的12个混合土样,分析土壤固体表面荧光光谱特征,提出一个基于固体表面荧光光谱的土壤腐殖化指数(HIX_(SSF)),并与I_(400)/I_(360)/I_(465)/I_(399)和A_4A_1等常规腐殖化指数有显著的线性正相关. 盐角草和碱蓬群落的HIX_(SSF)比盐爪爪和苦豆子群落的小,并且随土层深度变化小. 腐殖化指数与土壤盐度有显著的线性负相关,土壤腐殖化程度随盐度的减小而增强. HIX_(SSF)不仅表征土壤腐殖化程度,而且表征土壤盐碱化进程
英文摘要	Fluorescence spectroscopy relies on the fluorescence emitted by rigid conjugated systems and thus has been increasingly used to assess the soil organic matter (SOM) humification This technique is widely applied to solution samples of humic substances, and so far no information exists about its applicability to solid-phase soil samples. Composite soil samples of different depths (0-20, 20-40 and 40-60 cm) were collected from four different halophyte communities along a saline-impact gradient, namely, Comm Salicornia europaea (CSE), Comm Suaeda glauca (CSG), Comm Kalidium foliatum (CKF) and Comm Sophora alopecuroides (CSA) located around Wuliangsuhai Lake. A humification index based on solid surface fluorescence spectroscopy (HIXSSF) was proposed, and compared with conventional humification indices I_(400)/I_(360),I_(470)/I_(360),I_(465)/I_(399) and A_4/A_1. There were close positive linear correlations between HIX_(SSF) and I_(400)/I_(360),I_(465)/I_(399) and A_4/A_1, but a poor positive linear correlation existed between the HIX_(SSF) and I_(470)/I_(360). The results indicated that HIX_(SSF) can be taken as a tool to assess the soil humification The HIX_(SSF) of the CSE and CSG varied inappreciably within soil profiles and there was no trend with depth. However the HIX_(SSF) varied appreciably in the CKF and CSA, and the HIXSSF of the bottom soil profile was higher than that of the other profiles. As a whole, the soil humification degree was low around Wuliangsuhai Lake, and the ecological environment was relatively fragile. The salinity showed a strong negative linear relationship with the I_(400)/I_(360),I_(470)/I_(360),I_(465)/I_(399) and A_4/A_1, but a good negative linear relationship with the HIXSSF. The results indicated that the degree of the SOM humification increased with the drop in the salinity. The HIXSSF can be an indicator not only of the degree of SOM humification, but also of the process of the salinisation
中文关键词	固体表面荧光 ; 土壤有机物 ; 腐殖化指数 ; 盐度 ; 乌梁素海
英文关键词	Solid surface fluorescence Soil organic matter Humification index Salinity Wuliangsuhai Lake
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
WOS研究方向	Agriculture
CSCD记录号	CSCD:3983672
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/225252
作者单位	于会彬, 常州大学环境与安全工程学院, 常州, 江苏 213164, 中国.; 何小松, 常州大学环境与安全工程学院, 常州, 江苏 213164, 中国.; 郭旭晶, 常州大学环境与安全工程学院, 常州, 江苏 213164, 中国.; 刘鸿亮, 常州大学环境与安全工程学院, 常州, 江苏 213164, 中国.; 席北斗, 中国环境科学研究院水环境系统工程研究室, 北京 100012, 中国.; 马文超, 中国环境科学研究院水环境系统工程研究室, 北京 100012, 中国.; 魏自民, 东北农业大学生命科学院, 哈尔滨, 黑龙江 150030, 中国.
推荐引用方式 GB/T 7714	于会彬,席北斗,魏自民,等. 干旱半干旱地区湖泊周围盐碱土固体表面荧光光谱特征研究[J],2010,30(10):2680-2684.
APA	于会彬.,席北斗.,魏自民.,马文超.,何小松.,...&刘鸿亮.(2010).干旱半干旱地区湖泊周围盐碱土固体表面荧光光谱特征研究.光谱学与光谱分析,30(10),2680-2684.
MLA	于会彬,et al."干旱半干旱地区湖泊周围盐碱土固体表面荧光光谱特征研究".光谱学与光谱分析 30.10(2010):2680-2684.