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DGNSS of Korea, South Korea's industrial positioning Leading to the Ministry of Maritime Affairs and Fisheries Satellite Navigation Central Office

Applications of GNSS, Resource Management

Supporting the Indigenous Plant Reclamation Project in Arizona

The Native Resources International (GSSI research institute operated by UC Berkley) located in Phoenix, Arizona, began implementing environmental projects initiated by the State of Arizona. Their main services include native plant inventories and surveys for vegetation mapping, environmental assessments, and landscape design. Majority of Native Resources work in this particular project consisted of reclamation projects for preservation of indigenous plants, such as the Ironwood, Palo Verde, and Mesquite trees. Rapid land development in Arizona had devastated many native plants. With the use of GPS technology, Native Resources was able to help preserve the natural environment.

The reclamation project was comprised of multiple stages. The first stage was to complete a field inspection and native plant inventory, and this was when Native Resources assessed the potential effects the proposed development on the ecosystems. The plants were then carefully removed and prepared for transplantation in the nursery, where they were kept until development was complete. Each plant was mapped by Native Resources during the development period.

For their tasks, they utilized DGPS to collection information on the plant location, species, height and condition. With DGPS, they were able to collect the location data simply by standing next to the plant and inputting its characteristics to see whether the plant can be salvaged.

Then, in the office, the plant location and other information was transmitted to the DGPS software to be exported as DXF file. AutoCAD software was used to integrate the data with the digital field map to allow the client to revise the development plan accordingly to relocate specific plants and to preserve the natural environment. After determining which plants needed to be moved, they dispatched another team to prepare the plants from the location, the data on which had been saved earlier, to be protected in the nursery until the development was completed. In the past, they referred to survey stakes, rocks, trees, and landmarks to locate plants, and this method was labor-intensive, time-consuming and inaccurate.

Now, with the use of GPS, Native Resources can manage many projects, while using less resource for each project. They can transfer data to the computer to create maps and give reports to their clients in a more professional manner. This allows them to collect a large amount of information in a short period of time, and the data can be used easily and put into a database. Another benefit is that they can add information on plant characteristics out in the field.

Restoration of Wetlands in Florida

The residents of South Florida imported melaleuca trees from Australia for centuries with an aim to change the wetlands in the area into a forest. Although unintended, melaleuca has grown in an area of over 2 million acres and is threatening the native ecosystems and water resources. As an attempt to restore the natural ecosystem, the national parks and the local authority of South Florida is locating and removing melaleuca trees using DGPS and GIS software that provides location information. The working crews are renewing, processing and improving the data to maintain the GIS database.