Remote sensing and field data supporting the analysis of Maryland winter cover crop performance, 2019-2021

This data release includes winter cover crop field sampling data (2006-2021) collected from Maryland farms, along with two seasons of Maryland cost-share program field enrollment data (2019-20 and 2020-21) and associated satellite-derived vegetation index values, supporting the remote sensing analysis of winter cover crop environmental performance on fields receiving incentive payments.

Files include: 
1. CoverCropFieldData.csv - containing springtime field sampling data collected from 2006 to 2021 at the USDA ARS Beltsville Agricultural Research Center, Beltsville, Maryland, and from working farms on the Delmarva Peninsula, Maryland.
2. Maryland_20192020EnrollmentData.csv - containing winter cover crop cost-share program enrollment data (all fields) for the state of Maryland, for the Fall 2019-Spring 2020 season
3. Maryland_20202021EnrollmentData.csv - containing winter cover crop cost-share program enrollment data (all fields) for the state of Maryland, for the Fall 2020-Spring 2021 season 
4. Metadata_Remote_Sensing_and_Field_Data.xml - metadata file describing the datasets

On-farm data geolocations are privacy protected under a research agreement with the Maryland Department of Agriculture, and are therefore not included in this Data Release.  For access to geolocations, please contact the authors.

本数据集发布涵盖2006至2021年间从马里兰州农场采集的冬季覆盖作物田间采样数据，同时附带2019-2020与2020-2021两个季度的马里兰州冬季覆盖作物成本分摊项目田间登记数据，以及配套的卫星衍生植被指数值，可为接受激励补贴地块的冬季覆盖作物环境效益遥感分析提供研究支撑。

数据集包含以下文件：
1. CoverCropFieldData.csv：收录了2006至2021年间，于美国农业部农业研究局（USDA ARS）贝尔茨维尔农业研究中心（马里兰州贝尔茨维尔）以及马里兰州德尔马瓦半岛的运营农场采集的春季田间采样数据。
2. Maryland_20192020EnrollmentData.csv：包含2019年秋季-2020年春季季度内，马里兰州全境所有地块的冬季覆盖作物成本分摊项目登记数据。
3. Maryland_20202021EnrollmentData.csv：包含2020年秋季-2021年春季季度内，马里兰州全境所有地块的冬季覆盖作物成本分摊项目登记数据。
4. Metadata_Remote_Sensing_and_Field_Data.xml：用于描述本数据集的元数据文件。

本数据集发布未包含田间数据的地理定位信息，该类信息依据与马里兰州农业部签订的研究协议完成隐私保护处理。如需获取地理定位数据，请联系本文作者。