Effects of Low-Molecular-Weight Organic Acids on Leachate and Soil Properties of Typical Soils Under Leaching Condition in Three Gorge Reservoir Areas

YANG Xi; LU Yueqin; MA Lingli; WEI Shiqiang

doi:10.13961/j.cnki.stbctb.20160520.001

您当前的位置：

首页 >

文章列表页 >

Effects of Low-Molecular-Weight Organic Acids on Leachate and Soil Properties of Typical Soils Under Leaching Condition in Three Gorge Reservoir Areas

- Effects of Low-Molecular-Weight Organic Acids on Leachate and Soil Properties of Typical Soils Under Leaching Condition in Three Gorge Reservoir Areas
- Bulletin of Soiland Water Conservation Vol. 36, Issue 4, Pages: 175-181(2016)
- 作者机构：
  
  1. 西南大学资源环境学院重庆市农业资源与环境研究重点实验室三峡库区生态环境教育部重点实验室,重庆,400716
  2. 自贡市环境监测中心站,四川,自贡,643000
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.20160520.001
  CLC：
- Published：2016
- 稿件说明：
移动端阅览
YANG Xi, LU Yueqin, MA Lingli, et al. Effects of Low-Molecular-Weight Organic Acids on Leachate and Soil Properties of Typical Soils Under Leaching Condition in Three Gorge Reservoir Areas[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 175-181.
DOI：

YANG Xi, LU Yueqin, MA Lingli, et al. Effects of Low-Molecular-Weight Organic Acids on Leachate and Soil Properties of Typical Soils Under Leaching Condition in Three Gorge Reservoir Areas[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 175-181. DOI： 10.13961/j.cnki.stbctb.20160520.001.

摘要

[目的] 研究低分子量有机酸（草酸、柠檬酸、酒石酸）作用下淋出液及土壤（紫色潮土和灰棕紫泥）性质的变化，以期为三峡库区的环境管理提供参考和科学依据。[方法] 采用间歇式土柱模拟试验进行研究。[结果] 高浓度低分子量有机酸（≥50mmol/L）能够破坏灰棕紫泥的酸碱缓冲体系，当草酸、柠檬酸和酒石酸浓度≥50mmol/L时，灰棕紫泥土壤pH值均从8左右降到了4.11以下；而紫色潮土的缓冲性能较强，经淋溶后土壤pH值变化不大，仍然维持在6.84~8.71左右，与空白处理差异性不显著。另外，灰棕紫泥淋出液电导率变化较紫色潮土明显，高浓度低分子量有机酸处理下，灰棕紫泥淋出液电导率最高值达到了34.400mS；灰棕紫泥在3种低分子量有机酸淋洗下淋溶出离子量的大小顺序为：柠檬酸>酒石酸>草酸。[结论] 低分子量有机酸的酸解作用和络合作用是影响淋出液pH值、淋出液电导率和土壤pH值变化的主要原因，并能够参与紫色潮土和灰棕紫泥的化学和生物化学过程。低分子量有机酸的存在对三峡库区水环境恶化存在一定的风险。

Abstract

[Objective] To provide references and scientific bases for environmental management of the Three Gorges Reservoir areas

the effect of three simple organic acids(oxalic acid

citric acid

tartaric acid) on the properties of leachate and soil(purple soil and grey-brown purple soil) were investigated. [Methods] leaching experiments were conducted using intermittent soil column in lab. [Results] Low-molecular-weight organic acids at high concentration(≥50 mmol/L) can upset the acid-alkaline buffer system of grey-brown purple soil. Either oxalic acid

citric acid or tartaric acid

when the concentration was higher than 50 mmol/L

pH value of grey-brown purple soil was observed declined from around 8 to lower than 4.11. Whereas

the buffer effect of purple soil behaved strong. soil pH value of it varied between 6.84 and 8.71 after leaching

no significant differences were observed with the contrast value of blank treatment. Electrical conductivity of grey-brown purple changed more obviously than the one of purple soil. In the treatments of high concentrations of low-molecular-weight organic acids

the highest electrical conductivity of grey-brown purple soil even reached 34.400 mS. The leached amount of ions by the three acids had a rank of citric acid>tartaric acid>oxalic acid. [Conclusion] The main reasons affecting pH value

electrical conductivity of leachate and soil pH value were acid splitting and complexing action of the low-molecular-weight organic acid. Meanwhile

the acid-participated chemical and biochemical processes of the purple soil and grey-brown purple soil were also important. The presence of low-molecular-weight organic acids has certain risk to water environment in the Three Gorge Reservior areas.

关键词

Keywords

references

黄利玲,王子芳,高明,等.三峡库区紫色土旱坡地不同坡度土壤磷素流失特征研究[J].水土保持学报,2011,25(1):30-33.

于淑芳,张涑苕,刘光栋,等.山东主要土壤无机磷的转化和有效性[J].山东农业科学,1994(6):23-25.

胡红青,廖丽霞,王兴林.低分子量有机酸对红壤无机态磷转化及酸度的影响[J].应用生态学报,2002,13(7):867-870.

Hue N V.Effects of organic acids/anions on P sorption and phytoavailability in soils with different mineralogies[J].Soil Science, 1991,152(6):463-471.

陆文龙,曹一平,张福锁.根分泌的有机酸对土壤磷和微量元素的活化作用[J].应用生态学报,1999,10((3):379-382.

Kpomblekou A K, Tabatabai M A.Effect of organic acids on release of phosphorus from phosphate rocks[J].Soil Science, 1994,158(6):442-453.

Violante A, Gianfreda L.Adsorption of phosphate on variable charge minerals:Competitive effect of organic ligands[M]//Huang P M,Berthelin Jeds.Environmental Impact of Soil Component Interactions. New York: C R C Press, 1995,12:29-38.

Marschner H.Mineral nutrition of higher plants[J].London: Academic Press,1995.

长江水利委员会编.三峡工程生态环境影响研究[M].湖北武汉:湖北科学技术出版社,1997.

谢德体,范小华,魏朝富.三峡水库消落区对库区水土环境的影响研究[J].西南大学学报:自然科学版,2007,29(1):39-47.

冯晨,关连珠,颜丽.持续淋溶条件下有机酸对土壤磷素释放及无机磷组分的影响[J].土壤通报,2013,44(3):607-611.

Lena S, Andrew G O, Douglas L G, et al.Organic acid mediated P mobilization in the rhizosphere and uptake by maize roots[J].Soil Biology & Biochemistry, 2002,34(5):703-710.

Kpomblekou K A, Tabatabai M A. Effect of low-molecular weight organic acids on phosphorus release and phytoavailabilty of phosphorus in phosphate rocks added to soils [J].Agriculture, Ecosystems & Environment, 2003,100(2/3):275-284.

黄丽,刘畅,胡红青.不同pH下有机酸对针铁矿和膨润土吸附Cd

,Pb

的影响[J].土壤学报,2007,44(4):643-649.

吉芳英,王图锦,胡学斌,等.三峡库区消落区水体-沉积物重金属迁移转化特征[J].环境科学,2009,30(12):3481-3487.

李宛泽,谢文明,江涛,等.3种低相对分子质量有机酸对土壤中DDT的解吸[J].北华大学学报:自然科学版,2009,10(6):551-553.

李平,王兴祥.几种低分子量有机酸淋溶对土壤pH和交换性铝的影响[J].土壤,2005,37(6):669-673.

胡刚,王里奥,袁辉,等.三峡库区消落带下部区域土壤氮磷释放规律模拟试验研究[J].长江流域资源与环境,2008,17(5):780-784.

王业春,雷波,杨三明,等.三峡库区消落带不同水位高程土壤重金属含量及污染评价[J].环境科学,2012,33(2):612-617.

张信宝.关于三峡水库消落带地貌变化之思考[J].水土保持通报,2009,29(3):1-4.

张彦春,王孟钧,戴若林.三峡库区水环境安全分析与战略对策[J].长江流域资源与环境,2007,16(6):801-804.

杨茜,蒋珍茂,石艳,等.低分子量有机酸对三峡库区消落带典型土壤磷素淋溶迁移的影响[J].水土保持学报,2015,29(1):126-131.

唐海燕,魏世强.低分子量有机酸对淹水土壤磷释放动力学的影响[J].西南农业大学学报:自然科学版,2005,27(4):439-443.

陆文龙,王敬国,曹一平,等.低分子量有机酸对土壤磷释放动力学的影响[J].土壤学报,1998,35(4):493-499.

蒋智,况明生.重庆地区近57 a降雨量变化特征及其影响分析[J].亚热带水土保持,2009,21(2):9-13.

胡红青,廖丽霞,王兴林.低分子量有机酸对红壤无极态磷转化及酸度的影响[J].应用生态学报,2002,13(7):867-870.

金相灿.沉积物污染化学[M].北京:中国环境科学出版社,1992:314-323.

付春平,钟成华,邓春光.水溶液电导率与三峡库区底泥氮磷释放关系研究[J].重庆建筑大学学报,2006,28(4):76-78.

Views

1296

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Spatial Autocorrelation and Its Dominant Factors of Soil pH Value in Guahua Demonstration Zone

Effects of photovoltaic panel height on soil physicochemical properties in rocky desertification areas with different slopes during dry season

An Elementary Study on New Soil Consolidator Used to Control Channel Seepage

Overview of Mechanism of Plant Roots Improving Soil Reinforcement and Slope Stabilization

Water-source Conservation Function of Forest Soil in East of Heilongjiang Province

Related Author

YIN Hui

LI Hui

JIANG Zhongcheng

Liu Yungen

Hu Jun

Zhang Jiaxu

Luo Zhifeng

Huang Caishuang

Related Institution

Tourism Department, Huizhou University

College of Environment & Resources, Guangxi Normal University

Institute of Karst Geology, Chinese Academy of Geological Sciences

College of Soil and Water Conservation， Southwest Forestry University

Key Laboratory of Evolution and Pollution Control of;Mountain Rural Ecological Environment in Yunnan Province

⁰