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›› 2013, Vol. 30 ›› Issue (3): 339-346.DOI: 10.7523/j.issn.1002-1175.2013.03.010

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Temporal and spatial distribution of groundwater nitrogen pollution and influence factors in Dahe river catchment in Dianchi watershed

WANG Jia-Yin1, ZHANG Shi-Tao1, WANG Ming-Yu2, QI Chang-Wei1   

  1. 1. Kunming University of Science and Technology, Kunming 650093, China;
    2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-04-06 Revised:2012-04-23 Online:2013-05-15

Abstract:

Nitrogen pollution of groundwater in a typical catchment was investigated in order to understand the nitrogen contribution from groundwater to the serious eutrophication in Dianchi lake. The characteristics and patterns of temporal and spatial distribution of nitrogen in groundwater were obtained for the typical river catchment in Dianchi watershed. Additionally, four factors controlling variation in the nitrogen concentrations in groundwater, such as precipitation and N fertilizer applications, were indentified.

Key words: groundwater, nitrogen pollution, eutrophication, Dianchi watershed, Dahe river

CLC Number: