Abstract：The crop leaf area index ( LAI ) is an important standard that monitors crop growing, because crop leaves strongly absorb red spectral and reflect near infrared, the message of crop LAI can be gained by remote sensing. In this paper, monitoring crop growing by NOAA AVHRR is discussed, and estimation of rice yield is built in sample area, Jianli County. Through the analyses of observed data in sample area, following conclusion could be drawn:1)By perpendicular vegetation index,the rice LAI can be calculated and the other rice message is easily extracted from the mixed pixels. 2) The rice LAI changes certain regularly with effective accumulated temperatures. NOAA AVHRR materials and effective accumulated temperatures of each growth period could be used by monitoring of rice growing condition,in large region. 3)Accumulation of rice LAI is a useful index to reflect rice yield, on which yield estimation model is built could reach the accuracy of 95% for the rice.
收稿日期: 1997-04-25
引用本文:
刘可群 张晓阳. 江汉平原水稻长势遥感监测及估产模型[J]. , 1997, 36(4): 0-0.
刘可群 张晓阳. STUDY ON MONITOR OF RICE GROWING AND RICE YIELD ESTIMATION BY REMOTE SENSING IN JIANGHAN PLAIN. , 1997, 36(4): 0-0.
