Temporal and Spatial Characteristics and Influencing Factors of Nitrogen Morphology in Surface Sediments of Liangtan River, Chongqing

LIU Huan; KONG Weiwei; WANG Xiaofeng; YUAN Xingzhong; GONG Xiaojie; LIU Tingting

doi:10.13870/j.cnki.stbcxb.2019.06.047

您当前的位置：

首页 >

文章列表页 >

Temporal and Spatial Characteristics and Influencing Factors of Nitrogen Morphology in Surface Sediments of Liangtan River, Chongqing

更新时间：2025-03-12

- Temporal and Spatial Characteristics and Influencing Factors of Nitrogen Morphology in Surface Sediments of Liangtan River, Chongqing
- Vol. 33, Issue 6, Pages: 332-341(2019)
- 作者机构：
  
  1. 长江上游湿地科学研究重庆市重点实验室,重庆,401331
  2. 重庆师范大学地理与旅游学院,重庆,401331
  3. 重庆大学煤矿灾害动力学与控制国家重点实验室,重庆,400030
  4. 重庆大学资源及环境科学学院,重庆,400030
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2019.06.047
  CLC：
- Published：2019
- 稿件说明：
移动端阅览
LIU Huan, KONG Weiwei, WANG Xiaofeng, et al. Temporal and Spatial Characteristics and Influencing Factors of Nitrogen Morphology in Surface Sediments of Liangtan River, Chongqing[J]. 2019, 33(6): 332-341.
DOI：

LIU Huan, KONG Weiwei, WANG Xiaofeng, et al. Temporal and Spatial Characteristics and Influencing Factors of Nitrogen Morphology in Surface Sediments of Liangtan River, Chongqing[J]. 2019, 33(6): 332-341. DOI： 10.13870/j.cnki.stbcxb.2019.06.047.

摘要

为研究流域快速城市化背景下浅水河流表层沉积物氮赋存形态时空格局特征及潜在环境风险，选择重庆主城区的梁滩河为研究对象，于2014年12月和2015年6月采集干、支流主要断面水样及表层沉积物样进行分析。结果表明：梁滩河干、支流表层沉积物总氮（TN）含量变化为2.63~8.12 g/kg，离子交换态氮（IEF-N）、弱酸可提取态氮（WAEF-N）、强碱可提取态氮（SAEF-N）和强氧化剂可提取态氮（SOEF-N）含量分别为190~1 764，119~1 139，208~2 039，159~2 829 mg/kg，受流域污染源分布格局影响，沉积物各形态氮含量空间变化幅度均较大；梁滩河沉积物TN、WAEF-N、SAEF-N、SOEF-N含量上游至下游均逐渐降低，而活性最高的IEF-N则在城市河段出现明显峰值，外源污染强度和建设用地面积对不同形态氮的空间变异性具有较高的解释量，表明流域内污染格局及人类活动强度对沉积物氮形态分布具有重要影响；沉积物中可转化态氮（TF-N）含量占TN比例的52.9%~72.3%，且在城市河段IEF-N占比均显著高于非城市段，呈现较高的氮释放风险，表明城市污染进一步促使沉积物氮的活化；大部分断面总氮及各形态氮冬季略高于夏季，但变化幅度不大；统计分析表明，各形态氮之间具有较强的相互转化的联系，而且与水体pH、DO、DOC等环境参数呈显著相关关系，沉积物中氮形态分布特征受外源有机碳输入及水体污染的影响。综上，受流域城市发展过程中形成的不同污染源格局的影响，梁滩河表层沉积物氮形态空间变异性大，特别是城市区河段内源污染风险较大，如何调控内源氮释放是未来治理河流的关键。

Abstract

Urban rivers pollution is a serious issue facing the world today. With the controlling progressively for most of the urban point source pollution

endogenous release of nitrogen and phosphorus from sediments

which could continuously pollute river water

became the greatest challenge for the remediation of urban river. The purpose of this study was to examine the spatial and temporal characteristics and risks of nitrogen forms in surface sediments of the river with basin rapid urbanization. Liangtan River

which is a typical urban river and has been greatly polluted due to the rapid development of the city and industry on the basin of wastewater

was selected to carry out a seasonal investigation of nitrogen forms and water environment parameters. The results showed that the range of total nitrogen (TN) concentrations in surface sediment of Liangtan River and its tributary (Huxi River) were 2.63~8.12 g/kg

and contents of the ion exchange nitrogen focusing (IEF-N)

weak acid leaching nitrogen (WAEF-N)

alkali leaching (SAEF-N) and strong oxidant may leach nitrogen (SOEF-N) contents were 190~1 764

119~1 139

208~2 039 and 159~2 829 mg/kg

respectively. The high variability of such N forms was attributed to the distribution pattern of the pollution sources (such as urban

industry

and farming) in the basin. The contents of TN

WAEF-N

SAEF-N and SOEF-N in sediments decreased gradually from the upstream to the downstream of Liangtan River

while the IEF-N with the highest activity showed different peaks in the urban reach

indicated that the spatial distribution of the N forms in river sediments was dominated by the watershed anthropogenic activities and pollution types. Meanwhile

the transferable nitrogen (TF-N) accounted for 52.9%~72.3% in TN

with higher IEF-N percentage in urban reach than these in non-urban reach

showing the higher release risk of N in urban river. Seasonal pattern of the majority N forms in surface sediment of Liangtan River showed the winter were significantly higher than summer. The statistical analysis showed that sediment different N forms parameters had significant correlations with each other

indicating that their closely mutual transformation connection; in addition

the contents of different N forms were significantly and positively associated with pH

and DOC in surface water

indicating that exogenous water pollution hand a positive impact on sediment nitrogen release. Overview

N forms in the surface sediment of Liangtan River showed a great variability in spatial as the results of the pollution sources pattern in the process of urban development. There was a high release risk in the urban reaches due to the small molecular carbon input and higher exogenous pollution loading. The regulation of endogenous nitrogen release was the key point for river management in the future.

关键词

Keywords

references

Ren L J, Cui E Q, Sun H Y. Temporal and spatial variations in the relationship between urbanization and water quality[J].Environmental Science and Pollution Research,2014,21(23):13646-13655.

Mandaric L, Mor J R, Sabater S. Impact of urban chemical pollution on water quality in small, rural and effluent-dominated Mediterranean streams and rivers[J].Science of the Total Environment,2018,613/614:763-772.

Mouri G, Takizawa S, Oki T. Spatial and temporal variation in nutrient parameters in stream water in a rural-urban catchment, Shikoku, Japan:Effects of land cover and human impact[J].Journal of Environmental Management,2011,92(7):1837-1848.

丁文峰,张平仓,陈杰.城市化过程中的水环境问题研究综述[J].长江科学院院刊,2006,23(2):21-24.

Wang J Y, Da L J, Song K. Temporal variations of surface water quality in urban, suburban and rural areas during rapid urbanization in Shanghai, China[J].Environmental Pollution, Environmental Pollution,2008,152(2):387-393.

Nash M S, Heggem D T, Ebert D, et al. Multi-scale landscape factors influencing stream water quality in the state of Oregon[J].Environmental Monitoring Assessment,2009,156(1/4):343-360.

Ouyang T P, Zhu Z Y, Kuang Y Q. Assessing Impact of urbanization on river water quality in the Pearl River delta economic zone, China[J].Environmental Monitoring and Assessment,2006,120(1/3):313-325.

钱慧君,高洋,操满,等.水坝拦截对新安江沉积物中磷、氮形态的影响[J].上海大学学报(自然科学版),2015,21(1):72-80.

李义禄,张玉虎,贾海峰,等.苏州古城区水体污染时空分异特征及污染源解析[J].环境科学学报,2014,34(4):1032-1044.

Memet V. Temporal and spatial dynamics of nitrogen and phosphorus in surface water and sediments of a transboundary river located in the semi-arid region of Turkey[J].Catena,2013,100:1-9.

雷振宇,邓春光,周勤,等.嘉陵江支流梁滩河水环境容量及总量控制规划[J].水资源保护,2011(6):1-4.

邢雅囡,阮晓红,赵振华.城市重污染河道环境因子对底质氮释放影响[J].水科学进展,2010,21(1):120-126.

Yu J H, Fan C X, Zhong J C, et al. Evaluation of in situ simulated dredging to reduce internal nitrogen flux across the sediment-water interface in Lake Taihu, China[J].Environmental Pollution,2016,214:866-877.

马红波,宋金明,吕晓霞,等.渤海沉积物中氮的形态及其在循环中的作用[J].地球化学,2003,32(1):48-54.

刘波,周锋,王国祥,等.沉积物氮形态与测定方法研究进展[J].生态学报,2011,31(22):6947-6958.

王蓉,黄天寅,吴玮,等.典型城市河道氮、磷自净能力影响因素[J].湖泊科学,2016,28(1):105-113.

王梅,刘琰,郑丙辉,等.城市内河表层沉积物氮形态及影响因素:以许昌清潩河为例[J].中国环境科学,2014,34(3):20-26.

唐千,刘波,王文林,等.城市污染河道沉积物碳氮赋存对有机质分解的影响[J].环境科学,2016,37(6):2171-2178.

刘洋,陈永娟,王晓燕,等.城市河流沉积物中氮素与好氧甲烷氧化菌群落特征响应关系[J].湖泊科学,2018,30(5):271-1283.

Patrick J M, Ashley M H, Suzanne M T. Stream denitrification across biomes and its response to anthropogenic nitrate loading[J].Nature,2008,452(7184):202-205.

鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,2000:231-233.

宋厚燃,马利民,闵真真.梁滩河沉积物中氮磷垂直分布研究[J].环境污染与防治,2012,34(6):42-46.

卓海华,邱光胜,翟婉盈,等.三峡库区表层沉积物营养盐时空变化及评价[J].环境科学,2017,38(12):5020-5031.

周裔文,周晓红,任琪琪,等.镇江市古运河河岸沉积物氮及有机质分布特征[J].水土保持研究,2017,24(6):313-318.

金晶,袁旭音,陈诗文,等.太湖流域上游东苕溪干流沉积物和悬浮物的氮形态分布及影响因素[J].湖泊科学,2017,29(3):594-603.

张淑珍,赵钰,单保庆,等.滏阳河表层沉积物氮分布特征和界面无机氮扩散通量估算[J].环境科学学报,2016,36(5):1744-1751.

朱元荣,张润宇,吴丰昌.滇池沉积物中氮的地球化学特征及其对水环境的影响[J].中国环境科学,2011,31(6):978-983.

王育来,胡芸芸,杨长明,等.南淝河沉积物可转化态氮赋存形态及其对上覆水水质的影响[J].环境工程学报,2017,11(9):5057-5064.

任凌霄,王沛芳,王超.望虞河表层沉积物中氮的分布与形态变化特征[J].环境工程学报,2015,9(3):1201-1208.

Čížková H, Pechar L, Husák Š, et al. Chemical characteristics of soils and pore waters of three wetland sites dominated by Phragmites australis:Relation to vegetation composition and reed performance[J].Aquatic Botany,2001,69(2/4):235-249.

Kazi T G, Jamali M K, Kazi G H. Evaluating the mobility of toxic metals in untreated industrial wastewater sludge using a BCR sequential extraction procedure and a leaching test[J].Analytical and Bioanalytical Chemistry,2005,383:297-304.

李如忠,李峰.巢湖十五里河沉积物生物有效性氮磷分布及相关性[J].环境科学研究,2011,24(8):873-881.

周睿,袁旭音,Marip J B,等.不同湖泊入湖河流沉积物可转化态氮的空间分布及其影响因素[J].环境科学,2011,32(10):1122-1128.

赵力,蒋慧,董艳,等.南通市区河流底泥营养物质污染特征及环境风险分析[J].中国环境监测,2014,30(4):16-20.

张雷,秦延文,郑丙辉,等.三峡入库河流大宁河回水区浸没土壤及消落带土壤氮形态及分布特征[J].环境科学,2009,30(10):2884-2890.

王圣瑞,赵海超,王娟,等.有机质对湖泊沉积物不同形态氮释放动力学影响研究[J].环境科学学报,2012,32(2):332-340.

Views

1282

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Spatiotemporal Evolution of Vegetation and Spatial Heterogeneity of Influencing Factors in Chaohu Lake Basin from 2000 to 2023

Spatiotemporal Variations and Influencing Factors of Vegetation Water Use Efficiency in Shaanxi Province

Ecological Stoichiometric Characteristics of Soil Carbon， Nitrogen and Phosphorus in Poyang Lake Wetland during Dry Season and Their Influencing Factors

Distribution Pattern of Cadmium in the Profile of Shallow Fissure Soil and Its Influencing Factors in Karst Areas with High Geological Background

Simulation and Influencing Factors of Soil Water Storage in the Weihe River Basin Under Changing Environment

Related Author

WANG Hao

DONG Bin

XU Zhili

QU Jianshen

HAN Yuexia

LU Hao

AN Zhichao

WANG Lina

Related Institution

School of Economics and Management， Anhui Agricultural University

School of Forestry and Landscape Architecture， Anhui Agricultural University

College of Resources and Environment， Anhui Agricultural University

College of Mechanical and Electronic Engineering， Northwest A&F University， Yangling

College of Forestry， Northwest A&F University， Yangling

⁰