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Land Cover Classifications
|Tree||Meters squared of tree|
|Grass/Shrub||Meters squared of grass/shrub|
|Bare Earth||Meters squared of bare earth|
|Water||Meters squared of water|
|Building||Meters squared of building|
|Road||Meters squared of road|
|Other Paved||Meters squared of other paved|
|Agriculture||Meters squared of agriculture|
|Developed, Open Space||Areas with a mixture of some constructed materials, but mostly vegetation in the form of lawn grasses. Impervious surfaces account for less than 20% of total cover. These areas most commonly include large-lot single-family housing units, parks, golf courses, and vegetation planted in developed settings for recreation, erosion control, or aesthetic purposes.|
|Developed, Low Intensity||Areas with a mixture of constructed materials and vegetation. Impervious surfaces account for 20% to 49% percent of total cover. These areas most commonly include single-family housing units.|
|Developed, Medium Intensity||Areas with a mixture of constructed materials and vegetation. Impervious surfaces account for 50% to 79% of the total cover. These areas most commonly include single-family housing units.|
|Developed, High Intensity||Highly developed areas where people reside or work in high numbers. Examples include apartment complexes, row houses and commercial/industrial. Impervious surfaces account for 80% to 100% of the total cover.|
|Deciduous Forest||Areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. More than 75% of the tree species shed foliage simultaneously in response to seasonal change.|
|Evergreen Forest||Areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. More than 75% of the tree species maintain their leaves all year. Canopy is never without green foliage.|
|Mixed Forest||Areas dominated by trees generally greater than 5 meters tall, and greater than 20% of total vegetation cover. Neither deciduous nor evergreen species are greater than 75% of total tree cover.|
|Dwarf Scrub||Alaska only areas dominated by shrubs less than 20 centimeters tall with shrub canopy typically greater than 20% of total vegetation. This type is often co-associated with grasses, sedges, herbs, and non-vascular vegetation.|
|Shrub/Scrub||Areas dominated by shrubs; less than 5 meters tall with shrub canopy typically greater than 20% of total vegetation. This class includes true shrubs, young trees in an early successional stage or trees stunted from environmental conditions.|
|Grassland/Herbaceous||Areas dominated by gramanoid or herbaceous vegetation, generally greater than 80% of total vegetation. These areas are not subject to intensive management such as tilling, but can be utilized for grazing.|
|Sedge/Herbaceous||Alaska only areas dominated by sedges and forbs, generally greater than 80% of total vegetation. This type can occur with significant other grasses or other grass like plants, and includes sedge tundra, and sedge tussock tundra.|
|Lichens||Alaska only areas dominated by fruticose or foliose lichens generally greater than 80% of total vegetation.|
|Moss||Alaska only areas dominated by mosses, generally greater than 80% of total vegetation.|
|Pasture/Hay||Areas of grasses, legumes, or grass-legume mixtures planted for livestock grazing or the production of seed or hay crops, typically on a perennial cycle. Pasture/hay vegetation accounts for greater than 20% of total vegetation.|
|Cultivated Crops||Areas used for the production of annual crops, such as corn, soybeans, vegetables, tobacco, and cotton, and also perennial woody crops such as orchards and vineyards. Crop vegetation accounts for greater than 20% of total vegetation. This class also includes all land being actively tilled.|
|Barren Land (Rock/Sand/Clay)||Areas of bedrock, desert pavement, scarps, talus, slides, volcanic material, glacial debris, sand dunes, strip mines, gravel pits and other accumulations of earthen material. Generally, vegetation accounts for less than 15% of total cover.|
|Woody Wetlands||Areas where forest or shrubland vegetation accounts for greater than 20% of vegetative cover and the soil or substrate is periodically saturated with or covered with water.|
|Emergent Herbaceous Wetlands||Areas where perennial herbaceous vegetation accounts for greater than 80% of vegetative cover and the soil or substrate is periodically saturated with or covered with water.|
|Open Water||Areas of open water, generally with less than 25% cover of vegetation or soil.|
|Perennial Ice/Snow||Areas characterized by a perennial cover of ice and/or snow, generally greater than 25% of total cover.|
Wildfire Hazard Potential
Ozone (O3) Maximum
Particulate Matter (PM2.5) Average
Particulate Matter (PM2.5) Maximum
Land-Surface Temperature Difference
Hot Spot: Land-Surface Temperature
Click the map to select one, or more regions. Then use the 'Process Statistics' button in order to progress.
The following descriptions provide a general overview of the steps involved in completing an analysis with i-Tree Landscape. Visit the Help page for more details and a thorough How-To!
Let's Get Started!
Each i-Tree Landscape project is broken into the 5, simple steps outlined below. The current stage of a project is represented by the progress bar shown below the map. (To move between steps, click the Next or Back buttons or click on the desired step in the progress bar.)
In this stage of your project, you will be identifying the geographic region(s) that you would like to analyze.
To start, you can quickly zoom to an area of interest by entering a location, such as a city or street address, in the search bar at the top-left of the map, or use the zoom controls on the map.
Another important feature is the control panel located along the right side of the map which lists all of the available datasets: Map Layers, Canopy & Land Layers, and Base Maps. Explore the datasets and view them in the map display by turning layers on and off in the control panel.
With your area of interest visible in the map display, you can select the geographic region(s) that you would like to include in your project. First, designate the type of region that you would like to select by choosing from the drop-down list at the top of the control panel. Then, select a region of interest or multiple regions by using the control panel's Select tool and clicking on the map.
Explore Location Data
In this stage of your project, you can view the data associated with the geographic region(s) that you have selected. Data are displayed below the map and can be viewed in English or Metric units and in table or chart format.
The types of data displayed here include canopy and impervious cover, land cover, U.S. Census, and forest and human health risk data. Click on the available tabs to move through the data displayed in this stage.
See Tree Benefits
In this stage, you can view the tree benefits associated with the geographic region(s) that you have selected. Data are displayed below the map and can be viewed in English or metric units and in table or chart format.
Data displayed here include the amounts and dollar values of the carbon, air pollution, and hydrologic benefits provided by trees based on the tree cover in the selected region(s). Click on the available tabs to move through the benefits data displayed in this stage.
Prioritize Tree Planting
In forest management planning, an important thing to consider is where to target tree planting to promote sustainable tree benefits in the areas where they are most valuable. In this stage of your project, you can try out an easy method for prioritizing your selected regions for tree planting.
Look at common priority planting scenarios or create your own custom scenario. Choose from multiple criteria, including various land cover, demographic, risk, and tree benefit data, to create a custom priority index. Weight each criterion selected between 1 and 100 so that the sum of all selected criteria equals 100.
If you make changes to your priority planting index, click the Update Map Display button to see your new results in the map. Save planting priority scenarios so they can be included in your results in step 5.
In this stage of your project, you can see the results for your project by viewing the standard report or generating custom outputs.
Report generation is divided into multiple boxes: Location Information, Tree Benefits, and Prioritization. Within each category, you can choose the data that you would like to include in your results and specify the display format. Use the drop-down menu to select report elements, click the + Add button, and repeat to include as much data in your results as you would like to review. A list of your selections will appear below each category. When you have made all of your selections, click the Done button to view the finished report.
It's never too late to change the regions that you have selected for your analysis! Make changes to your selection in any stage you want – just remember to click the Process button in the control panel to update the data displayed below the map.
To move between steps, click the Next or Back buttons or click on the desired step in the progress bar.
Swap This Selection
This tool allows you to switch to other Boundary Type geographies that intersect your selected feature.
- You can swap for smaller geographies (like Census Block Groups it intersects).
- You can swap for larger geographies (like Congressional Districts it intersects).
For more information, see the Help page.
To swap geographies:
- Select a Boundary Type geography, via its button below, that you want to swap with the currently selected geography.
- Use OK to swap the original selection for the intersected features or Cancel to prevent any changes.
- A spinning Boundary icon will indicate processing activity (seconds to minutes).
- Non-desired, adjacent areas may intersect and can be deselected later.
This tool is particularly useful for selecting all smaller geographies within a larger geography.
- For example, if you want information on all block groups within a city, select the city, then swap the city with block groups.