基于遥感反演作物冠层温度的作物生长模拟和预报

利用作物冠气温差可以计算作物生长水分胁迫系数.用遥感信息估算作物冠层温度并且利用气象站的气温资料,通过冠气温差计算作物水分胁迫系数,并引入作物生长模拟模型,就实现动态和连续的作物监测及预报作物产量.本文对建立遥感-作物模拟复合模型的基本原理进行了探讨,并提出建立遥感-作物模拟复合模型所涉及的计算方法,但整体研究方法还有待进一步的验证.

Crop growth simulation and yield prediction based on the estimation of crop canopy temperature with remote sensing

The difference between canopy temperature and ambient temperature is an indicator of the degree of stomata closure and the actual assimilatory activity of the crop. Crop water stress index can be calculated through combining the difference and climatic data. If canopy temperature can be estimated with using remote sense data, water stress factor based on the canopy temperature can be introduced into crop simulation model to continually simulate the actual rate of crop growth and yield prediction. This paper presents a methodology for calculating actual crop production on the basis of remotely sensed canopy temperatures. However, further work is required to validate the methodology on the field.