Zhang Xinyu1; Xu Zhiwei1; Sun Xiaomin1; Dong Wenyi1; Deborah Ballantine2
Source Publicationjournalofenvironmentalsciences
AbstractThe nitrate-nitrogen (NO3--N) concentrations from shallow groundwater wells situated in 29 of the Chinese Ecosystem Research Network field stations, representing typical agro- and forest ecosystems, were assessed using monitoring data collected between 2004 and 2010. Results from this assessment permit a national scale assessment of nitrate concentrations in shallow groundwater, and allow linkages between nitrate concentrations in groundwater and broad land use categories to be made. Results indicated that most of the NO3--N concentrations in groundwater from the agro- and forest ecosystems were below the Class 3 drinking water standard stated in the Chinese National Standard: Quality Standard for Ground Water (<= 20 mg/L). Over the study period, the average NO3--N concentrations were significantly higher in agro-ecosystems (4.1 +/- 0.33 mg/L) than in forest ecosystems (0.5 +/- 0.04 mg/L). NO3--N concentrations were relatively higher (> 10 mg N /L) in 10 of the 43 wells sampled in the agricultural ecosystems. These elevated concentrations occurred mainly in the Ansai, Yucheng, Linze, Fukang, Akesu, and Cele field sites, which were located in arid and semi-arid areas where irrigation rates are high. We suggest that improvements in N fertilizer application and irrigation management practices in the arid and semi-arid agricultural ecosystems of China are the key to managing groundwater nitrate concentrations.
Funding Project[Key Direction in Knowledge Innovation Program of Chinese Academy of Sciences] ; [National Natural Science Foundation of China]
Document Type期刊论文
2.National Institute of Water and Atmospheric Research
First Author Affilication中国科学院地理科学与资源研究所
Recommended Citation
GB/T 7714
Zhang Xinyu,Xu Zhiwei,Sun Xiaomin,et al. nitrateinshallowgroundwaterintypicalagriculturalandforestecosystemsinchina20042010[J]. journalofenvironmentalsciences,2013,25(5):1007.
APA Zhang Xinyu,Xu Zhiwei,Sun Xiaomin,Dong Wenyi,&Deborah Ballantine.(2013).nitrateinshallowgroundwaterintypicalagriculturalandforestecosystemsinchina20042010.journalofenvironmentalsciences,25(5),1007.
MLA Zhang Xinyu,et al."nitrateinshallowgroundwaterintypicalagriculturalandforestecosystemsinchina20042010".journalofenvironmentalsciences 25.5(2013):1007.
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