[1]LI Hui,ZHANG Xiaoyuan,GUO Honglei.Spatial and Temporal Changes of Ecosystem Service Value in the Three Gorges Reservoir Area in the Past 30 Years Based on Land Use[J].Research of Soil and Water Conservation,2021,28(02):309-318.
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Spatial and Temporal Changes of Ecosystem Service Value in the Three Gorges Reservoir Area in the Past 30 Years Based on Land Use
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 02
Page number:
309-318
Column:
Public date:
2021-02-06
- Title:
- Spatial and Temporal Changes of Ecosystem Service Value in the Three Gorges Reservoir Area in the Past 30 Years Based on Land Use
- Keywords:
- land use; ecosystem service; temporal and spatial characteristics; GIS; Three Gorges Reservoir area
- CLC:
- X171; F062.2
- DOI:
- -
- Abstract:
- In order to analyze and explore the spatial and temporal variation characteristics of ecosystem service value(ESV)in the Three Gorges Reservoir area, based on Landsat TM/Landsat 8 OLI remote sensing image, the land use data of 1986, 1995, 2000, 2007, 2010 and 2018 in the study area were extracted by using RS and GIS technology, and the change trend of land use type was analyzed by using dynamic index model and land use degree index model. On the other hand, the ecosystem service value of the study area in the corresponding years was calculated, its temporal and spatial evolution characteristics were analyzed, and the relationship between land use degree and ESV was analyzed. The results show that:(1)from 1986 to 2018, the areas of cultivated land, forestland and grassland in the Three Gorges Reservoir area showed a decreasing trend; the water area, construction land and unused land area showed an increasing trend;(2)the change rates of different land use types were different, among which the construction land and water area changed faster, while the cultivated land, forestland, grassland and unused land changed slower;(3)in the period 1986—2018, the total value of ecosystem services in the Three Gorges Reservoir area continued to increase from 163.956 billion yuan to 166.201 billion yuan, with an overall growth rate of 1.37%;(4)ESV in the study area had a positive spatial autocorrelation, in which the high value areas clustered obviously and the low value areas were adjacent;(5)there was a strong positive correlation between land use and ESV. In the past 30 years, the ESV of the Three Gorges Reservoir area had been improved as a whole, and the ecological situation had been improved. However, there were great differences among regions, special attention should be paid to some specific regions; there was a close relationship between the ecosystem service value and land use. The results of this study can provide reference for the sustainable utilization of land resources and ecological environment in the Three Gorges Reservoir area.
- References:
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Last Update:
2021-02-10