Acta Geographica Sinica ›› 2010, Vol. 65 ›› Issue (7): 841-852.doi: 10.11821/xb201007008

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Mapping Runoff Based on Water Balance:A Case Study of the Huaihe River Basin above Bengbu

YAN Ziqi1,2, XIA Jun1, Lars GOTTSCHALK3   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Department of Geosciences, University of Oslo, N-0315 Oslo, Norway
  • Received:2010-01-20 Revised:2010-05-18 Online:2010-07-20 Published:2010-07-30
  • Supported by:

    National Basic Research Program of China, No.2010CB428406; Key Project of the Natural Science Foundation of China,No.40730632

Abstract:

This presentation describes a hydro-stochastic approach method for producing choropleth maps of average runoff and computing mean discharge along the main river network. The approach applied to mean annual runoff is based on geostatistical interpolation procedures coupled with water balance and data uncertainty analyses. It is proved by an application in the Huaihe River Basin above Bengbu, a typical basin in China. By disaggregating the mean annual streamflow measured at the outlet of a basin to estimate water depths on elements of an exact partition of this basin, it works out gridded runoff yield maps with a resolution of 10 km × 10 km and the discharge map along the river with a 1 km basic unit in length. These results are consistent with water balance.

Key words: Kriging method, hydro-stochastic, runoff, water balance, Huaihe River Basin