U.S. annual cultivated extent and maps of cropland expansion and cropland abandonment

This repository will eventually contain the data layers of several connected products related to U.S. cropland extent and dynamics, including:

A set of 30-m resolution maps of annual cultivated extent for the conterminous US (CONUS) for the years 1986-2018

A 30-m resolution nationwide map of abandoned croplands in the U.S., as described by Xie et al. (in review).

A 30-m resolution nationwide map of stable croplands in the U.S., as described by Uludere-Aragon et al. (in review).

A 30-m resolution nationwide map of cropland expansion in the U.S. for the period 1986-2018 (in prep). 

These data were also utilized in related publications, including:

Xie and Lark (2021). Mapping annual irrigation from Landsat imagery and environmental variables across the conterminous United States.  https://doi.org/10.1016/j.rse.2021.112445

Xie et al. (2021).  Landsat-based Irrigation Dataset (LANID): 30 m resolution maps of irrigation distribution, frequency, and change for the US, 1997–2017.  https://doi.org/10.5194/essd-13-5689-2021

O'neil et al. (in prep)  Effect of marginal land definitions on biofuel supply chain optimization outcomes.

本仓库最终将收录若干与美国农田范围及动态变化相关的关联产品的数据图层，具体包括：

1986年至2018年美国本土（CONUS）年度耕地范围的30米分辨率制图集

美国全国范围撂荒耕地30米分辨率制图（Xie等，审稿中）

美国全国范围稳定耕地30米分辨率制图（Uludere-Aragon等，审稿中）

1986年至2018年美国耕地扩张情况的全国30米分辨率制图（在编待刊）

上述数据亦被应用于以下相关研究成果中：

Xie与Lark（2021）. 基于Landsat影像与环境变量绘制美国本土年度灌溉分布图. https://doi.org/10.1016/j.rse.2021.112445

Xie等（2021）. 基于Landsat的灌溉数据集（LANID）：1997–2017年美国30米分辨率灌溉分布、频次及变化制图. https://doi.org/10.5194/essd-13-5689-2021

O'Neil等（在编待刊）. 边际土地定义对生物燃料供应链优化结果的影响