Name: Landforms

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Canadian ecologist Stanley Rowe called landform "the anchor and control of terrestrial ecosystems." It breaks up broad landscapes into local topographic units, and in doing so provides for more detailed meso- and micro-climatic expression of general macroclimatic character. It is largely responsible for local variation in solar radiation, soil development, moisture availability, and susceptibility to wind and other disturbance. As one of the five "genetic influences" in the process of soil formation, it is tightly tied to rates of erosion and deposition, and therefore to soil depth, texture, and nutrient availability. These are, with moisture, the primary edaphic controllers of plant productivity and species distributions. If the other four influences on soil formation (climate, time, parent material, and biota) are constant over a given space, it is variation in landform that drives variation in the distribution and composition of natural communities.</SPAN></P><P><SPAN>Landform is a compound measure, which can be deconstructed into the primary terrain attributes of elevation, slope, aspect, surface curvature, and upslope catchment area. The wide availability and improving quality of digital elevation data has made the quantification of primary terrain attributes a simple matter. Compound topographic indices have been derived from these primary attributes to model various ecological processes. We adopted the Fels and Matson (1997) approach to landform modeling. They describe a metric that combines information on slope and landscape position to define topographic units such as ridges, sideslopes, coves, and flats on the landscape. </SPAN></P><P><SPAN>The current 30m resoluation grid landform dataset is a base 17-part model comprising cliffs, flat summits/ridge tops, slope crests, steep slopes warm aspect and cool aspect, sideslopes warm aspect and cool aspect, cove slopes warm aspect and cool aspect, flats at the bottom of steep slopes, hilltop flats, hill gentle slopes, valley/toe slopes, dry flats, wet flats, moist flats, and large open water bodies. Topographic landforms were developed using 30m digital elevation data where landposition, slope, and moisture accumulation were calculated and integrated to define landforms. For open water and wetflats, vector and raster wetlands and water data were compiled for this analysis region and integrated into the landforms as well. Please see the source report documents for more information on landform detailed methods.</SPAN></P><P><SPAN /></P><P><SPAN>This dataset was downloaded for the City of Fayetteville of October 19th 2022. It was then clipped and reclassified to show only areas within the planning area.</SPAN></P></DIV></DIV></DIV>

Service Item Id: 91ad3042aec64b3dbeccfd3ab5ca8015

Copyright Text: The Nature Conservancy, Eastern Resource Office, Eastern Conservation Science (ECS), Boston, MA. Source reports from which this national dataswet was compiled: Anderson, M.G., A. Barnett, M. Clark, C. Ferree, A. Olivero Sheldon, J. Prince. 2016. Resilient Sites for Terrestrial Conservation in Eastern North America. The Nature Conservancy, Eastern Conservation Science. Anderson, M.G., M. M. Clark, M.W. Cornett, K.R. Hall, A. Olivero Sheldon, J. Prince. 2018. Resilient Sites for Terrestrial Conservation in the Great Lakes and Tallgrass Prairie. The Nature Conservancy, Eastern Conservation Science and North America Region. Anderson, M.G., M.A. Ahlering, M. M. Clark, K.R. Hall, A. Olivero Sheldon, J. Platt and J. Prince. 2018. Resilient Sites for Terrestrial Conservation in the Great Plains. The Nature Conservancy, Eastern Conservation Science and North America Region. Anderson, M.G., M. M. Clark, A. Olivero, and J. Prince. 2019. Resilient Sites and Connected Landscapes for Terrestrial Conservation in the Lower Mississippi-Ozark Region. The Nature Conservancy, Eastern Conservation Science. Anderson, M.G., M. M. Clark, A. Olivero, and J. Prince. 2019. Resilient Sites and Connected Landscapes for Terrestrial Conservation in the Rocky Mountains and Southwest Desert Region. The Nature Conservancy, Eastern Conservation Science.

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