【摘要】：基于試驗箱冬小麥凍害盆栽試驗,得到了識別和評價凍害差異程度的高光譜敏感波段和指數(shù),獲得了凍害農(nóng)學指標;研究了河南省林州市東南部及周邊地區(qū)2012-2013年的凍害過程,以凍害發(fā)生前后的兩幅高光譜影像為研究對象,利用冬小麥凍害高光譜敏感指數(shù)的研究結(jié)果,結(jié)合大田試驗對農(nóng)學凍害指標進行尺度轉(zhuǎn)換,獲得了HSI遙感冬小麥凍害指標,進行了冬小麥凍害的高光譜遙感監(jiān)測。結(jié)果顯示,VI_3[VI_3=(SDr-SDb)/(SDr+SDb)]高光譜指數(shù)凍害遙感監(jiān)測結(jié)果更精確。研究表明利用HJ-1A星HSI數(shù)據(jù)進行冬小麥凍害監(jiān)測是可行的,可為HJ-1A星高光譜數(shù)據(jù)在農(nóng)業(yè)遙感監(jiān)測中的應(yīng)用提供參考。
[Abstract]:Based on the pot experiment of winter wheat freezing injury in test box, the hyperspectral sensitive bands and indices to identify and evaluate the difference of freezing injury were obtained, and the agronomic indexes of freezing injury were obtained, and the process of freezing injury in the southeast of Linzhou City of Henan Province and its surrounding areas in 2012-2013 was studied. Taking two hyperspectral images before and after freezing injury as the research object, the HSI remote sensing index of winter wheat freezing injury was obtained by using the results of the research on hyperspectral sensitivity index of winter wheat freezing injury and the scale conversion of agronomic freezing injury index based on field experiment. The hyperspectral remote sensing monitoring of winter wheat freezing injury was carried out. The results show that the remote sensing monitoring results of hyperspectral index of VI_3= (SDr-SDb) / (SDr SDb) are more accurate. The results show that it is feasible to use HJ-1A satellite HSI data to monitor winter wheat freezing injury, which can provide a reference for the application of HJ-1A satellite hyperspectral data in agricultural remote sensing monitoring.
【作者單位】： 中國氣象局河南省農(nóng)業(yè)氣象保障與應(yīng)用技術(shù)重點實驗室;河南省氣象科學研究所;鶴壁市氣象局;
【基金】：國家自然科學基金聯(lián)合基金項目(U1204406) 中國氣象局·河南省農(nóng)業(yè)氣象保障與應(yīng)用技術(shù)重點實驗室開放基金(AMF201609)~~
【分類號】：S512.11;TP751
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本文編號：2234498