Advances in Earth Science ›› 2001, Vol. 16 ›› Issue (6): 795-801. doi: 10.11867/j.issn.1001-8166.2001.06.0795

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SU Fengge, HAO Zhenchun   

  1. Water Resources Development & Utilization Laboratory, Hehai University, Nanjing 210098,China
  • Received:2001-05-21 Revised:2001-08-08 Online:2001-12-20 Published:2001-12-01

As a branch of hydrologic cycle, land-surface hydrological processes are nearly relative to atmospheric circle by water and energy exchange between land-surface and atmosphere. Land-surface hydrological processes are not only the main participants in climate change but are effected by the change. The capacity of understanding and simulating the land-surface hydrological processes in climatic model is the premise to accurate climate prediction. The development of landsurface model is briefly introduced. The parameterization of land-surface hydrological processes is reviewed in overall from bare soil evaporation, plant evapotranspiration, soil wetness, drainage and runoff. There are still some uncertainties lying in the land-surface schemes. The main issues on hydrological processes parameterization include soil layers, soil layer depth, rooted area distribution; the representation and transplantation of parameters; observed data; and parameterization of runoff. The importance of runoff in landsurface schemes is analyzed; the weakness of runoff parameterization is pointed out; the study of runoff simulation in land-surface model is introduced; and the research focuses in the future are discussed.

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