Locust habitats monitoring based on multi-temporal CCD data of HJ-1 satellites
The classification of locust habitats is one of the most important tasks in terms of the monitoring and controlling of the locusts damages. Taking the Bohai development zone in Hebei province as the study area, this paper generated firstly the 14 scenes of temporal NDVI data from January 31 to December 9, 2010 based on image preprocessing and NDVI calculation from HJ-1 satellites. And then the classification system was developed according to the characteristics of the study area and locust habitats, including dense reeds, sparse reeds, folder wasteland, grassland, crop1, crops2, alfalfa, orchard, soil, salt water, building and road. At last, this paper classified the locust habitats using decision tree method based on the multi-temporal NDVI data. Verification data collected through ground surveys and 14 scenes of temporal CCD data were used for assessing the accuracy of the classified results. The results showed that some surface features prone to misclassification in a single phase for they have similar spectral characteristics were easy to classify from multitemporal data because their different temporal signature.
Locust Habitat Remote Sensing HJ-1 CCD Images NDVI Phenological Change Decision Tree
Jingjing Li Jian Chen Shijie Sheng
Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University ofInformation Meteorological Disaster of Ministry of Education, Nanjing University ofInformation Science & Technol School of Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044, Ch
国际会议
桂林
英文
1-8
2011-11-01(万方平台首次上网日期,不代表论文的发表时间)