基于近地高光谱和环境星高光谱数据的冬小麦越冬冻害遥感监测方法研究  

Study on monitoring freezing injury to winter wheat in overwinter period based on hyper-spectrometer and HJ1A-HSI image

作　　者：李军玲[1,2] 郭其乐[1,2] 任丽伟 

机构地区：[1]中国气象局河南省农业气象保障与应用技术重点实验室,河南郑州450003 [2]河南省气象科学研究所,河南郑州450003 [3]鹤壁市气象局,河南鹤壁458030

出　　处：《自然灾害学报》2017年第2期53-63,共11页Journal of Natural Disasters

基　　金：国家自然科学基金联合基金项目(U1204406);中国气象局.河南省农业气象保障与应用技术重点实验室开放基金(AMF201609)~~

摘　　要：基于试验箱冬小麦冻害盆栽试验,得到了识别和评价冻害差异程度的高光谱敏感波段和指数,获得了冻害农学指标;研究了河南省林州市东南部及周边地区2012-2013年的冻害过程,以冻害发生前后的两幅高光谱影像为研究对象,利用冬小麦冻害高光谱敏感指数的研究结果,结合大田试验对农学冻害指标进行尺度转换,获得了HSI遥感冬小麦冻害指标,进行了冬小麦冻害的高光谱遥感监测。结果显示,VI_3[VI_3=(SDr-SDb)/(SDr+SDb)]高光谱指数冻害遥感监测结果更精确。研究表明利用HJ-1A星HSI数据进行冬小麦冻害监测是可行的,可为HJ-1A星高光谱数据在农业遥感监测中的应用提供参考。Based on a freezing injury experiment of potted winter wheat by using high-low temperature and humidity test chamber, the hyper spectral sensitivity band and the indexes to identify and evaluate the freezing injury degree differences were obtained, and the freezing injury agronomic indexes were gotten. This paper studied the winter wheat freezing injury process during 2012 - 2013 in southeast area of Linzhou City and its surrounding areas of Henan Province. Two HJ1A-HSI images before and after freezing injury was used as the research object, HSI re- mote sensing freezing injury indexes were gotten by the scale converting based on agronomic indexes, and the hy- perspectral remote sensing monitoring for winter wheat freezing injury were done based on the results of winter wheat freezing injury hyperspectral sensitive index. This research results show that the monitoring results of VI3 [ VI3 = （ SDr - SDb）/（ SDr ＋ SDb） ] hyperspectral index are more accurate and monitoring winter wheat freeze injury using the HJ1 A-HSI data is feasible. The article may provide reference for using the HJ1 A-HSI data to agricultural re- mote sensing monitoring.

关 键 词：高光谱 敏感指数 冬小麦 冻害监测 农业遥感 环境一号卫星 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] S162.53[自动化与计算机技术—控制科学与工程]