[1]CHENG Yuzhuo,WANG Zhijie,BAN Xianya,et al.Evaluation of the Impact of Urbanization and Ecological Civilization Construction on Landscape Ecological Risk in Huaxi District of Guiyang Characterized as Karst Mountain City[J].Research of Soil and Water Conservation,2023,30(05):351-357.[doi:10.13869/j.cnki.rswc.2023.05.043.]
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Evaluation of the Impact of Urbanization and Ecological Civilization Construction on Landscape Ecological Risk in Huaxi District of Guiyang Characterized as Karst Mountain City
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 05
Page number:
351-357
Column:
Public date:
2023-08-10
- Title:
- Evaluation of the Impact of Urbanization and Ecological Civilization Construction on Landscape Ecological Risk in Huaxi District of Guiyang Characterized as Karst Mountain City
- Keywords:
- landscape pattern; landscape ecological risk; karst; ModelBuilder
- CLC:
- X826
- DOI:
- 10.13869/j.cnki.rswc.2023.05.043.
- Abstract:
- [Objective] The aim of this study is to explore the dynamic changes of landscape pattern and landscape ecological risk in Huaxi District, Guiyang City, a karst mountain city, and provide a basis for the protection and improvement of ecological environment and the construction of ecological security pattern of karst mountain cities. [Methods] The spatial data of landscape types in 2008, 2013, 2018 were selected as the main data sources. Integrated landscape ecological risk comprehensive assessment model was constructed based on ArcGIS ModelBuilder platform according to the basic framework of landscape ecological risk assessment. The spatial-temporal changes of landscape ecological risk in the study area in recent years were analyzed. [Results](1)From 2008 to 2018, the landscape pattern of Huaxi District changed dramatically, the area of cultivated land decreased by 216.00 km2, and the areas of forest land and construction land expanded by 127.09 km2 and 82.80 km2, respectively. Urbanization and ecological construction showed obvious spatial heterogeneity, so that the overall study area showed the change trend of ‘central urbanization and four-way ecology' with the variation of distance from the city center.(2)From 2008 to 2018, the area of the lowest-risk landscape ecological area in Huaxi District significantly increased by 164.81 km2, which was roughly equivalent to the reduction of the lower-risk area, and the fluctuation change of the range the medium-risk to highest-risk area was relatively small. Ecological protection projects had contributed to the mitigation of landscape ecological risk in the study area. The different forms of urbanization development in different areas of karst mountain cities made the landscape ecological risk manifested as the mitigation of urban centers and the intensification of urban suburbs.(3)The landscape ecological risk calculation tool has high efficiency and strong universality that is not restricted by regions and landscape types, can provide technical support for landscape ecological risk assessment in different regions. [Conclusion] Huaxi District presented a typical karst ‘city-mountain' mosaic pattern, and the change of landscape pattern and its ecological risk effect were greatly affected by rapid urbanization and ecological engineering construction, and there was obvious spatiotemporal heterogeneity. In the future, more attention should be paid to the rational planning of urban layout and the regulation of human activities, vegetation protection and ecological reconstruction should be continually implemented, so as to promote the win-win benefits of sustainable development of economic development and ecological improvement.
- References:
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Last Update:
2023-08-10