Submit your wetlands information by draw polygon or point in the map area
Download the data in a GeoTIFF format in its original resolution (approximately 236 m) to conduct further work using GIS Software.
The Global Wetlands Map is an initiative to collect and share information on tropical wetlands in a visual format. Users can access data and contribute their own, using standard geographic information systems software such as ArcGIS.
Explore the interactive web-based map and country and sub national level wetland profile, take a tour to visit some interesting places, or download the datasets to conduct your own analysis.
The Global Wetlands Map is produced by the Sustainable Wetlands Adaptation and Mitigation Program ( SWAMP ), a collaborative effort between the Center for International Forestry Research ( CIFOR ) and the United States Forest Service , supported by the United States Agency for International Development ( USAID ) and the CGIAR Research Program on Forests, Trees and Agroforestry ( FTA ).
Scroll, use the buttons (+ and -) to zoom in and out, or click and drag to move the map in any direction.
Change the Map View by selecting datasets on Wetlands, Peatlands or Carbon Stocks at the top left of the screen.
Wetlands profile at national and sub-national level
To generate information on wetland profile at national and sub-national level, select a country from the dropdown list. Wetlands profile at national level will be shown at the right panel. To go to sub-national level, you can then further select sub-national administrative area from the list.
Comparing wetlands profile
After selecting a country or sub-national wetlands profile, you can compare the result with any other country or sub-national administrative level. Click compare icon
on the right panel. Add up to 2 more countries or sub-national admin to compare. Click compare button to view the comparison.
To list down top 10 of the country that has particular wetlands properties, click Wetlands Ranking on the top. Total wetlands area is the default property that being ranked, but you can pick any other properties from the dropdown list on the top of the panel.
For advance user who need direct access to the data, you can download the datasets to conduct your own analysis and do further work. Data can be accessed in a GeoTIFF format in its original resolution (approximately 236 m) to conduct further work using GIS software.
The dataset shows distribution of wetland that covers the tropics and sub tropics (40° N to 60° S; 180° E to -180° W), excluding small islands. It was mapped in 231 meters spatial resolution by using transparent rules on hydrological wetness, satellite-derived soil wetness phenology, and geomorphology. Our method develops three biophysical indices that capture three key properties of wetlands:
The dataset consist of 10 classes: open water (10), mangroves (20), swamps/bogs (30), fens (40), riverine/lacustrine (50), floodout-swamps (60), floodplains and intermittent water bodies (70), marshes (80), wetland in arid climates (90), and wet meadow (100). In parenthesis, the class codes that appear in the map.
Please cite this work as:
Peat is here defined as any soil having at least 30cm of decomposed or semi-decomposed organic material with at least 50% of organic matter. This corresponds to 29% of carbon content using 1.72 as the transformation factor. The peat map is produced by adding the peat forming wetlands: mangrove (20), swamp/bog (30), Fen (40), riverine (50), and floodswamps (60) (note: the number in parentheses refer to pixel code of each class in Wetlands dataset). This maps maintains wetlands’ spatial resolution and methodology. Our map of peat was contrasted against n=275 geo-positioned soil profiles containing peat, with 65% of agreement.
Further fieldwork is however needed to validate our map. Mangroves are here considered to host the thresholds of depth and organic matter content needed for peat definition, although mineral soil may prevail. Mangroves contribute with ca. 180,000 km2 to the 1.7 million km2 of peatlands (11%), which would need further ground validation (i.e. in areas like Indonesian Papua have large extents of mangrove that contribute to peat, which would need ground-truthing to validate if they contain peat as defined here).
Please cite this work as:
To estimate depth we assumed that the terrain relief maps represent the metric distance from the ground surface of wetlands to their mineral bedding, but with certain maximum depths allowed for each wetland category. In effect, this means that:
A validation of our depth map against ground measured peat depths (i.e. soil profiles) suggests that our deepest values (>10m) overestimate depth. For this reason, all depths >10m have been thresholded to 10m.
Please cite this work as:
Total Peat Volume (0.3 m threshold)
Total Peat Volume (0.5 m threshold)
Thank you for contributing to improve the dataset by participating in data validation. Please draw a point or polygon over the area that you know very well and tell us if the data is correct (confirmation) or incorrect (correction) based on your knowledge.
To start validate the data, please fill in information below: