摘要
利用NOAA卫星AVHRR通道1、2计算NDVI和通道4的亮温T4,建立模型方程W=aeNDVI+bT4+c监测辽西地区土壤干旱情况。结果表明,土壤深度20cm左右是该模型适用的最佳层次,且模型的监测结果与实测值相对误差较小。
NDVI data was calculated from NOAA satellite visible and infrared bands. The model equation of W=ae^NDVI＋bT4＋c was established using W,NDVI and the fourth channel brightness temperature T4 from NOAA satellite. Soil drought was monitored with the regression model in the west of Liaoning. It was found that 20 cm soil depth was the best layer of the model application, and the relative error of monitoring results was small compared with the measured values.
出处
《农业网络信息》
2008年第2期12-13,15,共3页
Agriculture Network Information
基金
成都信息工程学院科研基金资助(CRF200701)
