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An Application of Hydrological Response Units in Assessment of Soil Salinization Risks

ZHANG Guang-xin1, DENG Wei1, HE Yan2, RAMSIS Salama3   

  1. 1.Northeast Institute of Geography and Agricultural Ecology, CAS, Changchun 130012, China; 2. Chinese Academy of Sciences, Beijng 100086, China; 3. CSIRO Land and Water, Perth WA6014, Australia
  • Received:2004-07-02 Revised:1900-01-01 Online:2005-05-26 Published:2005-05-26

Abstract: Based on three important parameters such as weight of hydrological zones (HZ), depth to water (DTW) and rate of rise(RR), a hydrological response units (HRU) map 2001 was created in the Tao’er River basin, Songnen plain, which can response sensitively to the spatial change of groundwater environment, and it is produced by the algebraic multiplication of the three classified grids: HRU = DTW*RR*HZ. The HRU mapping indicated that the risk degree is not high in the whole area, comparatively, the high risk zones are Momoge wetlands, Zhenlai county, Laifu and Chagan town, which attributed to the discharge alley of groundwater suffocated, the recharge of surface water body and irrational irrigation.

Key words: hydrological response units, soil salinization, groundwater environmental space, weight of hydrological zones, depth to water, rate of rise, Tao’er River basin

CLC Number: 

  • P641.2
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