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Public participation GIS (PPGIS) is a field within geographic information science that focuses on ways the public uses various forms of geospatial technologies to participate in public processes, such as mapping and decision making. Some members of the public participate in mapping activities simply to help inform the process. Others use information and map products developed with GIS in an attempt to alter the outcome of a decision-making process. Many problems impact PPGIS use, including a lack of familiarity with GIS, barriers to accessing necessary data, and limited ability to influence the decision.

Many government or public decisions about land and related resources, like forest management decisions or whether to allow a new development, rely on the interpretation and analysis of spatially complex information. Increasingly, citizens ...

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