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Geoinformatics_04-2009
article the spot 5 imagery of the state of queensland has served multiple applications: 1. nr&w uses the imagery to support the development of property maps of assessable vegetation (pmav), to help rural land holders better manage their land holdings and observe government regulations on land clearing. 2.epa uses the imagery to support the wetlands mapping project. 3.epa uses the imagery to assist regional ecosystem update and validation. 4.geoscience australia uses the imagery to update topographic maps. 5.emergency services use the imagery in disaster management and investigations. 6.regional groups use the imagery for property management and landuse/land-cover mapping. other uses of spot imagery around the state include: pest management at kroombit tops national park investigation of land-clearing extents, both legal and illegal, on public and private land permit evaluations in state forests identifying suitable land to offset loss of endangered ecosystems through mining assessment of biodiversity values for nature refuge proposals and potential park acquisitions biodiversity assessment of mining and other development proposals and tenure renewals assessing development applications, tenure dealings and state land assessments determining whether subject parcels are triggered for assessment park planning and infrastructure development (roads, fences, building locations etc.) the recipients of the spot imagery have benefited greatly from the purchase. as a result, many new datasets have been created, providing nrm managers with the tools to better manage their natural resources. fig. 2. property-scale data captured from spot 5 imagery tions in conjunction with state authorities. selected theme updates are also being undertaken, including vertical obstructions (towers), electricity, buildings and roads. the imagery is also being used by modellers in the critical infrastructure team wanting to fine-tune their disaster scenarios. monitoring high-risk zones the queensland environmental protection agency (epa) has used the spot imagery to assist the wetlands mapping and classification project. this project provides comprehensive coverage of wetlands, mapped at an appropriate scale and level of detail to guide the implementation of management actions and to support management decision-making. mapped areas of beach scrub along the queensland coast were a priority for many groups. beach scrub is an endangered coastal community that supports many important ecosystem processes. as a result of the mapping project, funding has been allocated to 12 priority remnant beach scrub areas in order to protect and improve their condition. field project work such as fencing, weed control, revegetation and interpretive activities has also been funded. another theme that has been mapped is riparian land use in the condamine catchment. in collaboration with the university of southern queensland, the condamine alliance group used spot 5 imagery along with relevant spatial datasets (e.g. qlump land-use map, recent thematic maps and field data) to extract information for land-use/cover maps, woody vegetation maps and land-use maps of the riparian buffer area. similarly, as part of the qscape project, nr&w in collaboration with the university of queensland are investigating the use of spot 5 imagery to map and monitor riparian attributes (water body extent, bank stability, woody vegetation extent and density, overhanging vegetation in the south-east queensland and fitzroy basin regions). the burdekin dry tropics nrm has funded the update of the brigalow belt latest news? visit www.geoinformatics.com regional ecosystem data. spot 5 satellite imagery is being used with slats imagery and aerial photography to capture this data. in the fitzroy region, the imagery is also being used to validate the regional ecosystem mapping. the datasets obtained from these projects are valuable for a state that has very little largescale data. spatial datasets are especially important for a state as large as queensland, fig. 3. land-cover map of hughenden developed by where it is a lot more southern gulf using spot 5 imagery efficient and cost-effective to use remote sensing as a tool for nrm management rather than field inspections. rural leases are using the spot imagery to create property maps of assessable vegetation (pmav), which are required by the government before land can be cleared. the spot imagery has been used to obtain information on the land management conditions of leasehold land and also in the assessment of pmav applications, and has proved to be a lot more accurate than previous methods. southern gulf catchments commissioned terranean mapping technologies to assess the potential of using spot 5 imagery to map land cover within the southern gulf region. the land-cover maps were derived using supervised spectral classification of two 10-metre spot images over mount isa and hughenden. high-resolution data and field observations were used to verify the results of the classifications and increase accuracy. the resulting maps (figure 3) have a resolution better than 30 metres, suitable for mapping at a scale of 1:25 000. the conclusion of this study was that supervised classification of spot 10-metre imagery, supported by field observations, is an efficient method for land-cover mapping. the resulting maps are valuable for assessing resource condition, provide a means for comjune 2009 11
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