[1]LI Can,WU Jiao.,LI Yuechen.Changes in Ecosystem Service Value and Ecological Security in the Ecologically Sensitive Area of the Three Gorges Reservoir Area -A Case Study on Yunyang, Fengjie and Wushan County, Chongqing City[J].Research of Soil and Water Conservation,2020,27(05):304-310,317.
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Changes in Ecosystem Service Value and Ecological Security in the Ecologically Sensitive Area of the Three Gorges Reservoir Area -A Case Study on Yunyang, Fengjie and Wushan County, Chongqing City
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
304-310,317
Column:
目次
Public date:
2020-08-20
- Title:
- Changes in Ecosystem Service Value and Ecological Security in the Ecologically Sensitive Area of the Three Gorges Reservoir Area -A Case Study on Yunyang, Fengjie and Wushan County, Chongqing City
- Keywords:
- ywords: land use/land cover change; ecological service values; spatial-temporal change; ecological security
- CLC:
- P964
- DOI:
- -
- Abstract:
- In order to visually see the changing trend of regional ecological service value and ecological security and the interrelation between them from time and space, based on the four issues of land use/cover change data of Yunyang County, Fengjie County and Wushan County in 2000, 2006, 2012 and 2018, and using the Envi, ArcGIS software as platform, and on the basis of the revised Ecological Service Value Coefficient, artificial disturbance index and landscape vulnerability index were introduced to evaluate the ecosystem service values and ecological security of Yunyang County, Fengjie County and Wushan County. The results showed that the total contribution of forestland to the ecological service value was the largest, followed by arable land, grassland and water area, the construction land contributed the negative ecological service value; the forestland distribution area was the area with the high value ecological service value, the areas with low ecological service value concentrated in the urban areas, the forestland was less disturbed by human activities, the degree of landscape fragility was less, the ecological security of forestland was better; the cultivated land and construction land were greatly influenced by human activities, the degree of landscape vulnerability was obvious and the ecological environment security was poor, the landscape pattern had not changed obviously on the large scale, and the total value of ecological services had increased from 2000 to 2018, the regional ecological environment security situation had gradually improved, the ecological security pattern and the spatial distribution pattern of the ecological service value had kept relatively consistent, and the areas with high values of the ecological security mainly focused on the areas with the high ecological service values, while the areas with the low ecological service values were the areas with poor ecological security levels.
- References:
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Last Update:
2020-08-25