The method of extracting rice-crayfish paddy fields distribution in the Jianghan Plain based on Sentinel-2 data
Taking the Jianghan Plain as the study area,and based on the Sentinel-2 MSI L2 data provided by AI Earth cloud plat-form,on the basis of field sampling samples and visually interpreted samples,the critical time and index threshold to distinguish rice-crayfish paddy fields from other ground types were summarized by analyzing the temporal change of rice-crayfish paddy fields in re-mote sensing images,so as to construct a decision tree model for rice-crayfish paddy fields extraction.Finally,the spatial distribution of rice-crayfish paddy fields in the Jianghan Plain from 2022 to 2023 was extracted.Finally,the accuracy of the method was evaluated based on the sample data,and the overall accuracy reached 93.25%with Kappa coefficient of 0.842 9,which showed that the method had better extraction results.
NETL
NSTL
万方数据
