A map of the Amazon rainforest ecoregions. The yellow line encloses the ecoregions per the World Wide Fund for Nature. A map of the bioregions of Canada and the US. An ecoregion (ecological region) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm.Ecoregions cover relatively …

2024年12月26日 · Information and links to downloadable maps and datasets for Level III and IV ecoregions, listed by state. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.

2024年12月13日 · Information and downloadable maps and datasets for Level III and IV ecoregions of the continental United States. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.

Tennessee Department of Environment and Conservation USDA Natural Resources Conservation Service 10 0 20 40 mi 20 40 80 km0 Albers equal area projection

This list of ecoregions in the United States provides an overview of United States ecoregions designated by the U.S. Environmental Protection Agency (EPA) and the Commission for Environmental Cooperation (CEC). The CEC was established in 1994 by the member states of Canada, Mexico, and the United States to address regional environmental concerns under the …

2019年10月19日 · Ecoregions have been developed and are being used to study the place dependency of environmental processes, including anthropogenic transformations of the land surface. Ecoregions are also the basis for reporting on the status and trends of land cover and land cover change. As a geographic framework that is useful for studying the response of the …

2024年10月1日 · Background. Ecoregions are areas where ecosystems (and the type, quality, and quantity of environmental resources) are generally similar. This ecoregion framework is derived from Omernik (1987) and from mapping done in collaboration with EPA regional offices, other Federal agencies, state resource management agencies, and neighboring North …

Based on Ecoregions developed by the EPA this map describe areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources, as well as similarity of climate that can assist Tennessee gardenders.

Take a look at the map of the United States. The country can be divided up in two ways—one by state, and one by ecoregion. Whereas state boundaries were created by people, the ecoregion boundaries on this map were created by Mother Nature.

2021年9月10日 · Glossary; Since the 1980s, there has been an increasing tendency to map biodiversity over "ecosystem regions" or "ecoregions". An ecoregion is "a relatively large unit of land or water containing a geographically distinct assemblage of species, natural communities, and environmental conditions" (WWF, 1999); thus, the ecosystems within an ecoregion have …