干旱区地理2026，Vol.49Issue(7)：1405-1417,13.DOI:10.12118/j.issn.1000-6060.2025.573
多源土地覆盖产品在中国西北干旱区的精度评价与一致性分析
Accuracy evaluation and consistency analysis of multi-source land cover products in the arid regions of northwest China
摘要
Abstract
Accurate land cover products are essential for understanding land use structure and spatial composition in the arid regions of northwest China.In this study,five high-resolution land cover products from 2020 were se-lected:the ESA global 10 m land cover product(ESA10),the ESRI global 10 m land cover product(ESRI10),the global 30 m land cover product(Globeland30),the global 30 m fine-classified land cover product(GLC_FCS30),and the China annual 30 m land cover product(CLCD).Precision assessments and consistency evaluations of these multi-source land cover products were conducted for the arid regions of northwest China from three per-spectives:classification accuracy,similarity in land cover composition,and classification consistency.The results indicate the following:(1)Among the five products,ESA10 achieved the highest classification accuracy(88.86%),whereas ESRI10 yielded a comparatively lower accuracy(69.69%).(2)The area correlation coeffi-cients across the five products ranged from 0.792 to 0.999,demonstrating strong agreement in characterizing land composition in the arid regions of northwest China.Bare land,grassland,and cultivated land constitute the domi-nant land cover types,collectively accounting for≥93.01%of the total area.(3)Classification consistency for bare land was the highest among the five products.The classification purity of any two-product combination reached up to 96.95%;the spatial consistency of bare land and cultivated land was also high,representing more than 56.39%of the area of the corresponding land cover types.Overall,ESA10 more accurately captured the land cover structure and spatial distribution compared with the other four products.These findings can provide a scien-tific basis for data selection in national land use planning and ecological conservation in the arid regions of north-west China.关键词
土地覆盖/精度检验/一致性评估/中国西北干旱区Key words
land cover/accuracy test/consistency evaluation/arid regions of northwest China引用本文复制引用
艳燕,刘雨露,张伟阁,孙茜,朱士华..多源土地覆盖产品在中国西北干旱区的精度评价与一致性分析[J].干旱区地理,2026,49(7):1405-1417,13.基金项目
河南省重点研发与推广专项(252102320213) （252102320213）
河南省教育厅人文社会科学研究项目(2022-ZZJH-088)资助 （2022-ZZJH-088）
