The ecological environment assessment and repairing of Guilin Karst Scenery based on satellite remote sensing

摘要

This paper develops an ecological index (EI) model to assess ecological environment, which is more suitable for Guilin Karst Scenery, because of highlight a greater weight in land degradation, and a lower weight in biological abundance. The EI model considers the biological abundance index, vegetation coverage index, water density index, land degradation index, and environmental quality index, and these indexes are 55.7, 62.7, 69.8, 25.7, and 93, respectively. These indexes are taken into the EI model, and the ecological index is 60.3, which means that the karst ecological environment reaches a “Good” level, but not reaches an “Excellent” level. The results show that the City of Guilin, China presents a higher coverage of the vegetation, a richer biological diversity, and a suitable environment for human being survival. However, the results also indicate that the environmental problems have been arisen at the same time.