Multicriteria Wetland Network

The NetworkDataFolder includes a network dataset created to investigate wetland connectivity using a multi-criteria optimization approach. Three arc attributes represent cost associated with movement on the landscape. The digital elevation model is used to compute the topographic wetness index and cost related to elevation change. The landuse/landcover layer is basis for calculating likelihood of successful traversal. The built network consists of 12 wetlands serving as origin and destination, and 1277 network arcs. For each arc there are several arc attributes as described below:<br><br>ID1: reference to arc endpoint at the lower altitudeID2: reference to arc endpoint at the higher altitudeDEM1: elevation at endpoint 1DEM2: elevation at endpoint 2<br>DEMc: elevation at midpoint of arcTWI1: topographic wetness index at endpoint 1TWI2: topographic wetness index at endpoint 2TWIc: topographic wetness index at midpoint of arcLUL1: landuse/landcover type at endpoint 1LUL2: landuse/landcover type at endpoint 2LULc: landuse/landcover type at midpoint of arcLULb: base successful traversal likelihood associated with each landuse/landcover typeLULf: final value of successful traversal likelihood (considering arc length)<br>DIST: arc length in meters<br>The ImplementationScript folder includes two solution approaches to identify Pareto-optimal solutions on the frontier of objective space in our multiobjective optimization model. The exact approach constructs the full efficient set and the approximate approach estimates the supported efficient solutions. The output for two solution methods are available in the PathFolder.