GIS Metrics - Soundscape Modeling: Standard Operating Procedure.

摘要

This SOP documents the process that was followed to create GIS based metrics, which have been selected as potential explanatory variable for soundscape modeling efforts. These explanatory metrics attempt to measure the complex biological, geophysical and anthropogenic sources and interactions which constitute a soundscape (Pijanowski et al. 2011-1, Mennitt et. al. In prep) across national parks and their surrounding landscapes. More specifically, the derived metrics from the Soundscape Modeling Geospatial Database (SMGB) have been used as training data in random forest (Breiman, L. 2001) soundscape models. Modeling efforts have been performed by the Natural Sounds Night Skies division of the Natural Resource Stewardship and Science (NRSS) directorate of the NPS. Using the GIS metrics that were identified as significant in the training models, predictive ambient sound pressure soundscape models have been created at park units and surrounding NPS landscapes (Mennitt et. al. In prep). In brief, this SOP provides specific information about data sources, the Python scripts utilized, and how metrics were calculated for subsequent compilation in the SMGD. In addition to documentation of workflow steps, this SOP is intended to facilitate efficient calculation of explanatory variables for sites were ongoing soundscape monitoring data are being collected.