期刊名称：Journal of Geography, Environment and Earth Science International
印刷版ISSN：2454-7352
出版年度：2019
卷号：20
期号：4
页码：1-20
DOI：10.9734/jgeesi/2019/v20i430111
语种：English
出版社：Sciencedomain International
摘要：The GFSAD30m cropland extent map has been recently produced at a spatial resolution of 30m as a part of NASA MEaSUREs’ Program Global Food Security Data Analysis (GFSAD) project. Accuracy assessment of this GFSAD30m cropland extent map was initially performed using an assessment strategy involving a simple random sampling (SRS) design and an optimum sample size of 250 for each of 72 different regions around the world. However, while statistically valid, this sampling design was not effective in regions of low cropland proportion (LCP) of less than 15% cropland area proportion (CAP).
关键词：Accuracy assessment;Simple Random Sampling (SRS);Cropland Area Proportion (CAP);Low Cropland Proportion (LCP);Stratified Minimum Proportional Sampling (SMPS).
