Research on remote sensing extraction methods for abandoned land in hilly areas of central Sichuan
DUAN Li
WANG Shi-ying
Abstract：Sichuan Province is dominated by a hilly landform,with poor farming conditions.In recent years,the problem of abandoned cultivated land has become increasingly serious.At present,the remote sensing method is one of the main methods to extract abandoned farmland,and there is little research on high-precision extraction of abandoned farmland in hilly areas by the remote sensing method.Taking Xiangfu Town,Ziyang as an example,this paper uses Sentinel 2 and Google HD satellite remote sensing images as data sources,combined with texture and spectral characteristics,to monitor the abandoned cultivated land in the study area from 2021 to 2022,and adopts the NDVI threshold method combined with extraction accuracy correction combined with Modis interannual NDVI transformation.The results show that the extraction accuracy is as high as 92％.
Keywords：abandoned landNDVI threshold methodHD images from Google Earth
Publication Date：2023-12-28
Pages：4( 35-38 )