基于GIS的河南省烤烟移栽面积遥感监测及产量估算

烟叶的移栽面积和产量信息对于有效配置烟叶资源实现供求平衡非常重要,通过利用多时相的可见光数据对2012年河南省烟叶播种面积和长势进行了卫星遥感监测,同时对河南省各地市烟叶产量进行了估测。经过验证,估测面积与实测面积高度一致,估测精度达到90%。移栽面积估测误差主要来源于烟田种植面积细碎化和遥感影像分辨率较粗。面积估测误差势必会影响产量估测精度,此外由于缺少长时间数据积累不能准确估计叶面积指数和产量之间的数量关系,也会带来产量的估测误差。

Remote-sensing Monitoring of Flue-cured Tobacco Transplanting Area and Estimation of Tobacco Yield in Henan Province Based on GIS

The information of tobacco transplanting area and yield is very important for the effective allocation of tobacco leaf resources and the realization of the balance between supply and demand of tobacco leaf .By using multi-temporal visible light data , the author monitored the sowing area and growth status of flue -cured tobacco in 2012 in Henan province by remote sensing , and es-timated the yield of tobacco leaf in various cities of Henan province .By verification , the estimated tobacco-transplanting area was highly consistent with the measured area , and the estimating accuracy reached 90%.The estimating error came mainly from the fragmentation of planting area and the low resolution ratio of remote sensing image .The error of estimating tobacco -transplanting ar-ea was bound to affect the accuracy of tobacco yield estimation .In addition, due to the lack of long -term data, the quantitative re-lationship between LAI and yield could not be accurately estimated , which also caused the error of tobacco yield estimation .