High Resolution, Annual Maps of Field Boundaries for Smallholder-Dominated Croplands at National Scales.

ABSTRACT: Mapping the characteristics of Africa's smallholder-dominated croplands, including the sizes and numbers of fields, can provide critical insights into food security and a range of other socioeconomic and environmental concerns. However, accurately mapping these systems is difficult because there is 1) a spatial and temporal mismatch between satellite sensors and smallholder fields, and 2) a lack of high-quality labels needed to train and assess machine learning classifiers. We developed an approach designed to address these two problems, and used it to map Ghana's croplands. To overcome the spatio-temporal mismatch, we converted daily, high resolution imagery into two cloud-free composites (the primary growing season and subsequent dry season) covering the 2018 agricultural year, providing

SUBMITTER: Estes LD 

PROVIDER: S-EPMC8916109 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature