Operational Tillage Information System (OpTIS) tillage, residue, and soil health practice dataset

CTIC has partnered with Applied GeoSolutions and The Nature Conservancy on the development, testing and application of the Operational Tillage Information System (OpTIS), an automated system to map tillage, residue cover, winter cover, and soil health practices using remote sensing data. While OpTIS calculations are performed at the farm-field scale using publicly available data, the privacy of individual producers is fully protected by reporting only spatially-aggregated results at regional and watershed scales. OpTIS-based data are currently available for the years 2005 through 2018 for the US Corn Belt, including all of Illinois, Indiana, and Iowa, as well as parts of: Kansas, Michigan, Minnesota, Missouri, Nebraska, Ohio, Oklahoma, South Dakota, and Wisconsin.
The Operational Tillage Information System (OpTIS) has been developed by Applied GeoSolutions (AGS) and the Conservation Technology Information Center (CTIC) as a method for the automated use of remote sensing (satellite-based) data to monitor conservation practices in agricultural systems, including various forms of reduced tillage and the planting of winter cover crops. While the OpTIS calculations are performed and validated at the farm-field scale, the privacy of individual producers is fully protected by distributing only spatially-aggregated results – at the county and watershed (8-digit HUC) scale. Resources in this dataset:Resource Title: Operational Tillage Information System (OpTIS) API. File Name: Web Page, url: https://ctic.org/OpTIS OpTIS reports tillage practices using the following categories:
Total Planted Area - Total area planted of indicated crops within the spatial unit (HUC8 or CRD) according to the previous year’s Cropland Data Layer map.
No-Till - Area/Percentage of indicated crops within the spatial unit that were not tilled prior to planting the next crop (this corresponds to a residue cover of >30% for all crops other than corn, for which the residue cover is >50%).
Reduced Tillage - Area/Percentage of indicated crops within the spatial unit that had a form of reduced tillage prior to planting the next crop (this corresponds to a residue cover of 16-30% for all crops other than corn, for which there is a reduced tillage category with a high residue of 31-50%).
Conventional Tillage - Area/Percentage of indicated crops within the spatial unit that were conventionally tilled prior to planting the next crop (residue cover 0-15%).

我国与美国应用地球解决方案公司（Applied GeoSolutions，简称AGS）以及自然保护协会（The Nature Conservancy）携手合作，共同开发了农田耕作信息管理系统（Operational Tillage Information System，简称OpTIS），该系统为利用遥感数据（基于卫星数据）自动绘制耕作、残留物覆盖、冬季覆盖和土壤健康等实践提供了一种方法。尽管OpTIS的计算在农场-地块尺度上进行，且验证无误，但为充分保护个别生产者的隐私，仅报告区域和流域（8位HUC码）尺度的空间聚合结果。目前，OpTIS数据已涵盖2005年至2018年美国玉米带的年度数据，包括伊利诺伊州、印第安纳州、艾奥瓦州全境，以及堪萨斯州、密歇根州、明尼苏达州、密苏里州、内布拉斯加州、俄亥俄州、俄克拉荷马州、南达科他州和威斯康星州的部分地区。

农田耕作信息管理系统（OpTIS）由应用地球解决方案公司（AGS）和 Conservation Technology Information Center（CTIC）共同开发，旨在作为自动化利用遥感（基于卫星）数据监控农业系统中 Conservation practices 的方法，包括多种形式的减少耕作和冬季覆盖作物种植。尽管OpTIS的计算和验证是在农场-地块尺度上进行的，但通过仅分发县级和流域（8位HUC码）尺度的空间聚合结果，确保了个别生产者的隐私得到充分保护。本数据集包含以下资源：

资源标题：农田耕作信息管理系统（OpTIS）API。
文件名：网页，URL：https://ctic.org/OpTIS
OpTIS报告耕作实践，采用以下类别：

总种植面积 - 在空间单元（HUC8或CRD）内根据前一年农作物数据层地图种植的指定作物总面积。
免耕 - 在空间单元内，未在种植下一作物之前进行耕作的指定作物面积/百分比（对于除玉米以外的所有作物，这对应于残留物覆盖率大于30%，而对于玉米，残留物覆盖率大于50%）。
减少耕作 - 在空间单元内，在种植下一作物之前进行过某种形式减少耕作的指定作物面积/百分比（对于除玉米以外的所有作物，这对应于残留物覆盖率为16-30%，而对于玉米，存在一个具有高残留率（31-50%）的减少耕作类别）。
传统耕作 - 在空间单元内，在种植下一作物之前进行传统耕作的指定作物面积/百分比（残留物覆盖率为0-15%）。