巢湖流域地下水硝态氮的分布及其影响因素研究

doi:10.3969/j.issn.1008-0864.2011.01.11

›› 2011, Vol. 13 ›› Issue (1): 68-74.DOI: 10.3969/j.issn.1008-0864.2011.01.11

• 资源环境生物药物生物质转化 • 上一篇下一篇

巢湖流域地下水硝态氮的分布及其影响因素研究

顾颖,孙东宝,王庆锁

(中国农业科学院农业环境与可持续发展研究所, 农业部旱作节水农业重点开放实验室, 北京 100081)

收稿日期:2010-10-29 修回日期:2010-12-09 出版日期:2011-02-15 发布日期:2011-02-15
通讯作者: 王庆锁,研究员,博士,主要从事旱地农业和生态学研究。E-mail:wangqingsuo@ieda.org.cn
作者简介:顾颖,硕士研究生,主要从事水环境研究。E-mail:guying8683@163.com
基金资助:
“十一五”国家科技支撑计划项目(2007BAD87B01);国家科技重大专项(2008ZX07425)资助。

Studies on Groundwater Nitrate Nitrogen Distribution and its Affecting Factors in Chao Lake Watershed

GU Ying, SUN Dong-bao, WANG Qing-suo

(Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences|Key Laboratory of Dryland Agriculture, Ministry of Agriculture, Beijing 100081, China)

Received:2010-10-29 Revised:2010-12-09 Online:2011-02-15 Published:2011-02-15

摘要/Abstract

摘要：

为了探讨巢湖流域地下水硝态氮的空间分布规律,2009年11月至12月在巢湖流域采集了253个地下水样品,分析了其硝态氮含量。结果表明,巢湖流域地下水硝态氮含量平均值为7.13 mg/L,超标率(10 mg/L≤NO-3N<20 mg/L)和严重超标率(NO-3N≥20 mg/L)分别为15.81%和7.11%。不同土地类型的地下水硝态氮含量存在一定差异，其中村庄＞菜地＞果园＞旱地＞城镇＞水稻-油菜（或小麦）轮作田＞单季水稻田＞养殖场。巢湖流域绿色水稻产区地下水硝态氮含量比非绿色水稻产区低。农田地下水硝态氮含量与化肥氮施用量、人口密度和耕地面积比例呈正相关。农田地下水硝态氮含量具有随地下水位的下降而降低的趋势，但两者之间没有显著相关性。当化肥氮的年施用量超过100 kg/hm2或地下水位低于9 m时，地下水硝态氮含量存在超标的潜在危险。

关键词: 巢湖流域;地下水;硝态氮

Abstract:

To investigate the spatial distribution of groundwater nitrate nitrogen (NO-3N) in the Chao Lake watershed, 253 water samples were collected from wells in the watershed from November to December, 2009 and their NO-3N concentrations were analyzed. The results showed that the samples NO-3N concentrations were averaged 7.13 mg/L, and 15.81% of them exceeded 10 mg/L, the WHO limit for NO-3N of drinking water, and 7.11% of them exceeded 20 mg/L, the criterion for serious NO-3N pollution. The NO-3N concentrations were different in different land types, with the pattern of villages>vegetable fields>fruit gardens>dry lands>towns>ricerape (or wheat) fields>singleseason rice fields>livestock farms. The NO-3N concentration of groundwater in Green RiceProducing Area was lower than that in NonGreen RiceProducing Area in Chao Lake watershed. The NO-3N concentration of groundwater in farmlands was positively related to the application rate of nitrogen chemical fertilizer, the population density and the proportion of cultivated area. The NO-3N concentrations were declined with the lowering of the groundwater table, but there was no significant correlation between them. When the application of chemical fertilizer nitrogen exceeds 100 kg/hm2, or the groundwater table is less than 9 m, the NO-3N concentration of groundwater has the potential risk of exceeding the WHO limit.

Key words: the Chao Lake watershed, groundwater, nitrate nitrogen

中图分类号:

S181

顾颖,孙东宝,王庆锁. 巢湖流域地下水硝态氮的分布及其影响因素研究[J]. , 2011, 13(1): 68-74.

GU Ying, SUN Dong-bao, WANG Qing-suo. Studies on Groundwater Nitrate Nitrogen Distribution and its Affecting Factors in Chao Lake Watershed[J]. , 2011, 13(1): 68-74.

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巢湖流域地下水硝态氮的分布及其影响因素研究

Studies on Groundwater Nitrate Nitrogen Distribution and its Affecting Factors in Chao Lake Watershed

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