在2018-2023年期间,中国农田使用强度的国家规模10米地图
Bingwen Qiu1, Baoli Liu2, Zhenghong Tang3
1Key Laboratory of Spatial Data Mining &Information Sharing of Ministry of Education, Academy of Digital China (Fujian), Fuzhou University, Fuzhou, 350116, Fujian, China. qiubingwen@fzu.edu.cn.
Scientific data
|June 26, 2024
概括
新的高分辨率地图显示了中国.
科学领域:
- 农业科学 农业科学
- 遥感 遥感 遥感 遥感
- 环境科学 环境科学
背景情况:
- 快速的城市化和农村老化威胁着中国的耕地.
- 准确的,高分辨率的关于活跃耕地和耕作强度的数据对于全球粮食安全至关重要.
- 现有的国家数据集缺乏时空连续性,分辨率和精度.
研究的目的:
- 为中国 (中国-CUI10m) 从2018-2023年提供更新的年度耕地使用强度地图.
- 以10米分辨率量化耕地废弃和农业强化.
- 提供可靠的数据集,为耕地使用政策和可持续农业提供信息.
主要方法:
- 使用的Sentinel-1 (S1) SAR和Sentinel-2 (S2) MSI时间序列数据.
- 开发了强大的算法来绘制耕地使用强度,而不需要广泛的培训样本或区域调整.
- 生成年度地图,详细说明地/废弃土地,积极耕种的田地和耕作强度.
主要成果:
- 与地面真相数据相比,实现了高准确度 (整体准确度=90.88%).
- 与统计数据有很强的相关性 (R2 > 0.94).
- 揭示了中国农田放弃和农业强化近期趋势.
结论:
- 中国-CUI10m数据集提供了前所未有的农田动态细节.
- 这些发现支持针对耕地管理和可持续农业强化制定有针对性的政策.
- 为了解发展中国家小农农业系统做出贡献.
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