The rapid development and growth of urban areas is putting increased pressure on the environment including green spaces and urban parks. Green spaces including street landscapes, lawns, public park areas, gardens, crops and forests is needed to improve the urban areas and to provide a quality of life to the population. Vegetation offers oxygen and reduces energy demands on the environment and enhances views with a natural environment. The use of GIS data and satellite imagery to manage and monitor green spaces are crucial to improving urban environments and plays an important role to life all arounds us.
The use of medium or high resolution satellite imagery can support urban developers and land managers to monitor and support decision making for sustainable urban development in dense urban environments with changes that require high resolution detail gathering strategic planning information pertaining to urban planning and development. Satellite image data provides detailed analysis for creating or updating GIS maps and detecting major changes in urban land cover and land use which allows for frequent coverage and overlaying of different time sequences to classify environmentally safe and sustainable areas for the proposed development area (s).
GIS maps and satellite imagery supports:
- Updating information on road networks and other urban infrastructure
- Collection and analysis of data on population density, distribution and growth
- Preparation of housing typologies
- Analysis of watersheds
- Lanscape development
- 3D modeling
- Infrastructure modeling
- Environmental impact accessment
- Carbon foot print
High and Medium Resolution Satellite Imagery
The satellite sensors deliver 16-Bit 4-Band (B,G,R,N) or 8-Band (C,B,G,Y,R,RE,N,N2) multispectral pixel resolutions from 1.2m to 5m. Pansharpened vegetation indices can be delivered with a resolution of 30cm, 40cm or 50cm, providing great detail for vegetation and environmental analysis for urban planning and development.
High resolution stereo satellite sensors, such as GeoEye-1, WorldView-2, WorldView-3, WorldView-4, Pleiades-1 and other high resolution satellite sensors can provide a variety of geospatial data for analysis of vegetation and green spaces for the development of sustainable urban areas. WorldView satellites provide a high resolution panchromatic band and eight (8) multispectral bands; four (4) standard colors (red, green, blue, and near-infrared) and four (4) new bands (coastal, yellow, red edge, and near-infrared), full-color images for enhanced spectral analysis, mapping and monitoring applications
The use of medium resolution satellite imagery such as Landsat-8, Sentinel-2 and SPOT proved to benefit in the analysis of changes in the vegetation and environment from different years or time periods during the same season which helps to analyze the changes that occurred in the past to making decision on moving forward with planning and development of urban areas.