NRCS Regional Conservation Partnership Program - Mississippi River Basin

The Mississippi River is North America’s largest river, flowing over 2,300 miles through America’s heartland to the Gulf of Mexico. The watershed not only provides drinking water, food, industry, and recreation for millions of people, it also hosts a globally significant migratory flyway and home for over 325 bird species.
Leading the world in agricultural production, a healthy agricultural sector in the Mississippi River Basin is essential for maintaining the nation’s and the world’s food and fiber supply. USDA Conservation Effects Assessment Project (CEAP) cropland models show that conservation on cropland throughout the entire Mississippi River Basin has reduced nitrogen and sediment loading to the Gulf of Mexico by 28 percent and 45 percent, respectively, over what would be lost without conservation systems in place.
With the CCA designation, USDA will build on existing strong partnerships in the basin to accelerate conservation in the 13-state area to continue to reduce nutrient and sediment loading to local and regional water bodies and to improve efficiency in using water supplies, particularly in the southern states. The CCA boundary was identified to harness the partnerships and momentum already established by NRCS’s Mississippi River Basin Healthy Watersheds Initiative (MRBI). With more than 600 partners engaged throughout the initiative area, MRBI has treated over 800,000 acres of agricultural land with systems of practices intended to avoid, control, and trap nutrient and sediment run-off and improve irrigation efficiency.
This dataset includes a printer-friendly CCA map and shapefiles for GIS. Resources in this dataset:Resource Title: Mississippi River Basin. File Name: Web Page, url: https://www.nrcs.usda.gov/programs-initiatives/rcpp-regional-conservation-partnership-program/critical-conservation-areas Information about the project and links to a printer-friendly CCA map (PDF, 1.2MB) and shapefiles for GIS (ZIP, 218KB).

密西西比河作为北美最大的河流，蜿蜒流经美国腹地，全长超过2300英里，最终汇入墨西哥湾。其流域不仅为数百万人提供饮用水、食物、工业和娱乐，还成为全球重要的候鸟迁徙通道，拥有超过325种鸟类栖息地。在全球农业产量领先的背景下，密西西比河流域的健康农业部门对于维持国家和全球的粮食及纤维供应至关重要。美国农业部（USDA）的 Conservation Effects Assessment Project（CEAP）农田模型显示，在密西西比河流域的整个农田上实施保护措施，已将氮和泥沙对墨西哥湾的排放量分别减少了28%和45%，相较于没有保护系统的情况。在获得CCA（Critical Conservation Area）指定后，USDA将依托该流域现有的强大合作伙伴关系，加速13个州的保护工作，以持续减少营养物和泥沙对当地和区域水体的排放，并提高水资源的利用效率，尤其是在南部各州。CCA边界的确定旨在利用自然资源保护局（NRCS）的密西西比河流域健康流域倡议（MRBI）已建立的合作伙伴关系和动力。在倡议区域，MRBI已与超过600个合作伙伴合作，对80万英亩的农田实施了旨在避免、控制和捕获营养物和泥沙径流以及提高灌溉效率的实践系统。本数据集包括适用于打印的CCA地图和GIS形状文件。数据集资源包括：

资源标题：密西西比河流域
文件名：网页，网址：https://www.nrcs.usda.gov/programs-initiatives/rcpp-regional-conservation-partnership-program/critical-conservation-areas
项目信息及打印版CCA地图（PDF，1.2MB）和GIS形状文件（ZIP，218KB）链接。