闽江福州下游段水体N含量季节变化及对湿地土壤N含量的影响

吴耀建; 张永勋; 黄佳芳; 林贤彪; 曾从盛; 仝川; 王维奇

doi:10.13961/j.cnki.stbctb.2014.04.028

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闽江福州下游段水体N含量季节变化及对湿地土壤N含量的影响

试验研究

- 闽江福州下游段水体N含量季节变化及对湿地土壤N含量的影响
- Seasonal Variations of N Content in Fuzhou Downstream Section of Minjiang River and Its Influence on N Content in Wetland Soil
- 水土保持通报 2014年33卷第4期页码：76-80
- 作者机构：
  
  1. 国家海洋局第三海洋研究所,福建,厦门,361005
  2. 福建师范大学地理科学学院,福建,福州,350007
  3. 福建师范大学亚热带湿地研究中心,福建,福州,350007
  4. 福建师范大学湿润亚热带生态-地理过程省部共建教育部重点实验室,福建,福州,350007
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目"盐度梯度对闽江口潮滩湿地N2O排放影响研究"(41201101)
- DOI：10.13961/j.cnki.stbctb.2014.04.028
  中图分类号：
- 纸质出版：2014
- 稿件说明：
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吴耀建, 张永勋, 黄佳芳, 等. 闽江福州下游段水体N含量季节变化及对湿地土壤N含量的影响[J]. 水土保持通报, 2014,33(4):76-80.

WU Yao-jian, ZHANG Yong-xun, HUANG Jia-fang, et al. Seasonal Variations of N Content in Fuzhou Downstream Section of Minjiang River and Its Influence on N Content in Wetland Soil[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 76-80.
吴耀建, 张永勋, 黄佳芳, 等. 闽江福州下游段水体N含量季节变化及对湿地土壤N含量的影响[J]. 水土保持通报, 2014,33(4):76-80. DOI： 10.13961/j.cnki.stbctb.2014.04.028.

WU Yao-jian, ZHANG Yong-xun, HUANG Jia-fang, et al. Seasonal Variations of N Content in Fuzhou Downstream Section of Minjiang River and Its Influence on N Content in Wetland Soil[J]. Bulletin of Soiland Water Conservation, 2014, 33(4): 76-80. DOI： 10.13961/j.cnki.stbctb.2014.04.028.

摘要

选取闽江福州下游段水体及河口短叶茳芏湿地土壤水作为研究对象

采用SAN

连续流动分析仪测试样品中NO

-N

-N和NH

-N含量

以揭示河流水体N含量的季节差异和对土壤水N含量的影响。研究结果表明:(1) 闽江福州下游段秋季河流水NH

-N和NO

-N含量高于春季

-N含量低于春季;秋季短叶茳芏湿地土壤水NH

-N和NO

-N含量也明显高于春季

土壤水NO

-N含量低于春季;春、秋季土壤水NH

-N含量皆高于河流水

而NO

-N和NO

-N含量皆明显低于河流水。(2) 河流水的浸淹对土壤N含量影响较大

说明河流水是湿地土壤的主要N源。(3) 闽江福州下游段河流水3种形态的N含量表现为秋季大于春季

存在较明显的季节差异。(4) 与2007-2008年的观测值相比较

闽江河口河流水体N含量呈大幅上升趋势

水体富营养化加剧。

Abstract

Water-body in Fuzhou downstream section of Minjiang River and soil water of wetland growing Cyperus malaccensis in intertidal region of estuary were selected as object of study. The contents of nitrate nitrogen(NO3-N)

nitrite nitrogen(NO2-N) and ammonium nitrogen(NH4+-N) in the samples were measured by SAN++ Continuous Flow Analytical System for showing the difference of their contents between spring and autumn

and the influence of N contents in river water on the contents of soil water. The result showed that:(1) The contents of NH4+-N and NO3-N in river water in autumn are higher than in spring

and the content of NO2-N was opposite; In the soil water

the contents of NH4+-N and NO2-N in autumn were higher than in spring

and the content of NO3-N was invers; the content of NH4+-N in soil water was higher than that in river water

on the contrary

the contents of NO3-N and NO2-N in soil water were less than that in river water;(2) River water was the main source for N in wetland soil water due to submersion of river water influencing on N content of the soil water significantly;(3) The total contents of NO3-N

NO2-N and NH4+-N in river water in autumn were more than in spring

there was a obvious seasonal difference;(4) Compared with the contents in river water from Minjiang River in 2007-2008

the N contents in river water increased sharply in recent years

as a result

the river water eutrophication was aggravated.

关键词

Keywords

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