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[Spatial neighboring characteristics among patch types in oasis and its ecological security]
1State Key Laboratory of Frozen Soil Engineering of Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences, Lanzhou 730000, China. ymjiao@sina.com
Summary
Oasis types in Northwest China face threats from desertification and salinization. Spatial analysis reveals grassland, farmland, and forest are most vulnerable due to their proximity to desert and salina-marsh areas.
Area of Science:
- Ecology
- Environmental Science
- Geospatial Analysis
Context:
- The Jinta Oasis in Northwest China's arid Heihe River Basin is studied.
- Oasis ecological security is a growing concern in arid regions.
Purpose:
- To analyze the spatial relationships between oasis types and surrounding desert/salina-marsh areas.
- To assess the ecological security threats posed by desertification and salinization.
Summary:
- Spatial neighboring length and number between oasis types and desert or salina-marsh were calculated using ArcView3.0a and buffer zone analysis.
- Grassland and farmland showed significant adjacency to desert, indicating high desertification risk.
- Forest and farmland exhibited greater proximity to salina-marsh, suggesting severe salinization impacts.
Impact:
- This spatial assessment effectively reveals the degree of threat to oasis ecological security from desertification and salinization.
- Findings highlight the differential vulnerability of oasis components to environmental degradation.