Effects of Crop Distr ibution on Land Sur face Simulations over the Intake Ar ea of the South- to- Nor th Water Tr ansfer Project
农作物分布对南水北调受水区域 陆面过程模拟的影响

In this paper,we develop a crop distribution data(CLCV-3C) base on the Chinese Land Cover data(CLCV) and the global crop distribution data developed by SAGE at the University of Wisconsin-Madison,and investigate the effects of crop distribution on land surface simulations over the intake area of the South-to-North Water Transfer Project using the NCAR/CLM model with the two land cover data.The numerical results show that the crops affect the energy and water balance over the intake area of the South-to-North Water Transfer Project differently;the simulated net radiation,sensible heat,runoff increase,and evapotranspiration decrease in the wheat area,while the simulated net radiation,sensible heat,evapotranspiration increase and runoff decrease in the maize and rice area;the effect of crop distribution on energy balance is greater then that on water balance.