Quantitative evaluation of spatial distribution of nitrogen loading in the citarum river basin, Indonesia

Koshi Yoshida, Kenji Tanaka, Keigo Noda, Koki Homma, Masayasu Maki, Chiharu Hongo, Hiroaki Shirakawa, Kazuo Oki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Human population growth has led to increases in energy and food production, use of fertilizers, and wastewater flows. Enhanced availability of nitrogen is a cause of eutrophication of rivers, lakes, and estuaries worldwide. In this study, Citarum River Basin, West Java, Indonesia was selected as a target area, supplying 80% of domestic water to Jakarta Metropolis. Meteorological and hydrological data from 1996 to 2009, and spatial data such as topography, land use, soil properties were collected for model simulation. Conceptual nitrogen balance model, which has three nitrogen pools, was developed and combined with rainfall runoff model. Proposed model was applied to the Citarum River Basin and simulated river discharge and nitrogen load in 1 km×1 km resolution to check the model applicability. By using the model, spatial distribution of nitrogen loading in whole basin level was estimated and histograms of nitrogen load from different land use also evaluated. The results provide a first insight into the magnitude and the spatial distribution of nitrogen loading in Citarum River Basin.

Original languageEnglish
Pages (from-to)31-44
Number of pages14
JournalJournal of Agricultural Meteorology
Volume73
Issue number1
DOIs
Publication statusPublished - 2017 Jan 1

Keywords

  • Diffuse pollution
  • Land use
  • Nitrogen runoff
  • Point sources
  • West Java

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Atmospheric Science

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