不同土地利用方式对苏打盐碱土水溶性有机物荧光特性的影响

吉林大学学报(理学版)

不同土地利用方式对苏打盐碱土水溶性有机物荧光特性的影响

李亚男^1,2, 武俊男^1,2, 高云航^3, 高强^1,2, 刘淑霞^1,2

1. 吉林农业大学资源与环境学院, 长春 130118；2. 吉林省商品粮基地土壤资源可持续利用重点实验室, 长春 130118;3. 吉林农业大学动物科技学院, 长春 130118

收稿日期:2016-09-09 出版日期:2017-05-26 发布日期:2017-05-31
通讯作者: 刘淑霞 E-mail:liushuxia2005824@163.com

Effects of Fluorescence Characteristics on Water Extractable OrganicMatter in Soda Saline-Alkali Soil under Different Land Use Patterns

LI Yanan^1,2, WU Junnan^1,2, GAO Yunhang^3, GAO Qiang^1,2, LIU Shuxia^1,2

1. College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, China;]2. Key Laboratory of Soil Resource Sustainable Utilization for Jilin Province Commodity Grain Bases, Changchun 130118,China; 3. College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China

Received:2016-09-09 Online:2017-05-26 Published:2017-05-31
Contact: LIU Shuxia E-mail:liushuxia2005824@163.com

摘要/Abstract

摘要： 利用三维荧光光谱技术考察吉林省西部不同土地利用方式(草原、旱田和水田)对苏打盐碱土水溶性有机物荧光特性的影响. 结果表明: 水田中有机物质的质量比最高, 为27.08 g/kg, 草原中有机物质的质量比最低, 为21.63 g/kg; 水溶性有机物(WEOM)的质量比为水田>旱田>草原, 芳香化程度为草原>水田>旱田, 其值分别为390,379,3.31 L/(mg·m); WEOM三维荧光光谱在区域Ⅲ和区域Ⅴ的荧光强度最高; WEOM荧光区域积分值为类腐殖酸>类富里酸>类溶解性微生物的代谢产物>类色氨酸蛋白质>类酪氨酸蛋白质; 类富里酸质量比为草原>旱田>水田, 类溶解性微生物代谢产物的质量比为水田>旱田>草原, 类腐殖酸质量比为旱田>草原>水田. 即不同土地利用方式对土壤中WEOM的质量比和组成影响显著.

关键词: 荧光特性, 水溶性有机物, 苏打盐碱土, 土地利用方式

Abstract: By using the technology of threedimensional fluorescence spectroscopy, we studied the effects of fluorescence characteristics on water extractable organic matter in soda saline\|alkali soil (grassland, dry farmland, paddy field) under different land use patterns in the west of Jilin Province.
The results show that the mass ratio of organic matter in paddy field is the highest, 2708 g/kg, while the mass ratio of organic matter in grassland is the lowest, 21.63 g/kg. The mass ratio of water extractable organic matter (WEOM) is paddy field>dry farmland>grassland. The aromatic concentration is grassland>paddy field>dry farmland, and the values are 390,379,331 L/(mg·m). The fluorescence intensity of region Ⅲ and region Ⅴ is the highest in threedimensional fluorescence spectra of WEOM. The integral values of WEOM fluorescence region are humic acidlike>fulvi acid like>soluble microbial byproductlike substance>tyrosinelike protein>tryptophanlike protein. The mass ratios of fulvic acidlike are grassland>dry farmland>paddy field, the mass ratios of soluble microbial byproductlike substance are paddy field>dry farmland>grassland, [JP+1]and the mass ratios of humic acidlike are dry farmland>grassland>paddy field. It indicated that different land use had significant effect on the mass ratio and compos
ition of WEOM in soil.

Key words: soda salinealkali soil, water extractable organic matter, land use pattern, fluorescence characteristics

中图分类号:

李亚男, 武俊男, 高云航, 高强, 刘淑霞. 不同土地利用方式对苏打盐碱土水溶性有机物荧光特性的影响[J]. 吉林大学学报(理学版), 2017, 55(03): 733-738.

LI Yanan, WU Junnan, GAO Yunhang, GAO Qiang, LIU Shuxia. Effects of Fluorescence Characteristics on Water Extractable OrganicMatter in Soda Saline-Alkali Soil under Different Land Use Patterns[J]. Journal of Jilin University Science Edition, 2017, 55(03): 733-738.