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Spatio-temporal evolution of landscape patterns in an oasis city
Daosheng Chen1,2,3, Fei Zhang4,5, Chi Yung Jim6
1College of Geography and Remote Sensing Sciences, Xinjiang University, Urumqi, 830046, China.
Environmental Science and Pollution Research International
|August 11, 2022
Summary
Urbanization significantly altered oasis landscape patterns over 20 years, with building areas expanding northward. This research offers insights for sustainable urban development strategies.
Area of Science:
- Environmental Science
- Urban Planning
- Remote Sensing
Background:
- Oasis urban landscape patterns are crucial for sustainable development.
- Understanding spatio-temporal evolution is essential for future planning.
Purpose of the Study:
- To characterize the spatio-temporal evolution of oasis landscape patterns over the past 20 years.
- To identify driving factors and directional changes in landscape patterns.
Main Methods:
- Remote sensing and spatial analysis techniques were employed.
- Methods included land transfer matrix, orientation evolution, landscape indices (Aggregation Index, Landscape Division Index), natural driving factor analysis (DEM, NDVI), and mass center migration model.
Main Results:
- Significant land use/land cover (LULC) changes occurred, with building area increasing by 464.8 km².
- Landscape pattern changes, particularly building expansion, predominantly occurred in the northwest direction.
- Building expansion correlated with lower elevations (DEM) and specific vegetation cover (NDVI) values, indicating expansion into bare land and farmland.
- The center of gravity for building land shifted north, while green space and bare land shifted south due to encroachment.
Conclusions:
- Urbanization drives significant landscape transformations in oasis regions.
- Findings provide a basis for informed, sustainable urban development planning in arid and semi-arid environments.
- The study highlights the impact of urbanization on natural and semi-natural land cover types.
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