Chinese Journal of Agrometeorology ›› 2016, Vol. 37 ›› Issue (04): 464-470.doi: 10.3969/j.issn.1000-6362.2016.04.011

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Monitoring on the Occurrence of Cnaphalocrocis medinalis Based on Multi-temporal HJ Satellite’s Remote Sensing Images

BAO Yun-xuan, LI Yu-ting, WANG Lin, GAO Wen-ting, ZHU Feng   

  1. 1.Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044;3.Jiangsu Province Plant Protection Station, Nanjing 210013
  • Received:2015-11-25 Online:2016-08-20 Published:2016-08-10

Abstract:

Two experimental rice fields (one was used as a reference and the other was for target analysis) were conducted in Tangzhuang, Gaoyou of Jiangsu Province in 2013, and the Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), and Near-infrared Spectroscopy (NIR) were used to characterize the occurrence and evolution of C. medinalis, which were calculated from the satellite HJ-1A/1B retrieval data. A series of analyses were performed to disclose the relationship among these three indices and the occurrence frequency, severity, and evolution of C. medinalis. The results showed as follows: (1) The more the numbers of C. medinalis, the higher the changes of such characteristic parameters. (2) The positive correlations were found between the damage of C. medinalis and the discrepancy of characteristic parameters in these two experimental fields. (3) Quantitative correlation analyses showed that DNIR and folding leaf rate had a highly significant correlation (P<0.01), and DEVI and folding leaf rate had a significant correlation (P<0.05). While there was not significant between DNDVI and folding leaf rate. Therefore, it was feasible to using HJ satellite images to monitor and warn the outbreak and development of C. medinalis, which provided a new possible method to monitor dynamically the damage of C. medinalis.

Key words: Cnaphalocrocis medinalis, HJ-1A/1B satellite, Normalized Difference Vegetation Index, Enhanced Vegetation Index, Gaoyou