Dataset of 1 km cropland cover from 1690 to 1999 in Scandinavia

• Main Authors: X. Wei, M. Widgren, B. Li, Y. Ye, X. Fang, C. Zhang, T. Chen
• Format: Article
• Language: English
• Published: Copernicus Publications 2021-06-01
• Series: Earth System Science Data
• Online Access: https://essd.copernicus.org/articles/13/3035/2021/essd-13-3035-2021.pdf

<p>Spatially explicit historical land cover datasets are essential not only for simulations of climate and environmental dynamics but also for projections of future land use, food security, climate, and biodiversity. However, widely used global datasets are developed for continental- to global-scale analysis and simulations. Their accuracy depends on the verification of more regional reconstruction results. This study collects cropland area data of each administrative unit (parish/municipality/county) in Scandinavia from multiple sources. The cropland area data are validated, calibrated, interpolated, and allocated into <span class="inline-formula">1 km×1 km</span> grid cells. Then, we develop a dataset with spatially explicit cropland area from 1690 to 1999. Results indicate that the cropland area increased from <span class="inline-formula">1.82×10⁶</span> ha to <span class="inline-formula">6.71×10⁶</span> ha from 1690 to 1950 and then decreased to <span class="inline-formula">5.90×10⁶</span> ha in 1999. Before 1810, cropland cover expanded in southern Scandinavia and remained stable in northern Scandinavia. From 1810 to 1910, northern Scandinavia experienced slight cropland expansion. The cropland area increased rapidly in the southern part of the study area before changing slightly. After 1950, the cropland areas began to decrease in most regions, especially in eastern Scandinavia. When comparing global datasets with this study, although the total Scandinavia cropland area is in agreement among SAGE (Center for Sustainability and the Global Environment), HYDE (History Database of the Global Environment ) 3.2, PJ (Pongratz Julia), and this study, the spatial patterns show considerable differences, except for in Denmark between HYDE 3.2 and this study. The dataset can be downloaded from <a href="https://doi.org/10.1594/PANGAEA.926591">https://doi.org/10.1594/PANGAEA.926591</a> (Wei et al., 2021).</p>