[1]YANG Weiqing,ZHANG Huilan.Ecosystem Service Value Assessment and Multi-Scenario Simulation of Fujiang River Basin Based on GeoSOS-FLUS[J].Research of Soil and Water Conservation,2022,29(05):253-262.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 05
Page number:
253-262
Column:
Public date:
2022-08-20
- Title:
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Ecosystem Service Value Assessment and Multi-Scenario Simulation of Fujiang River Basin Based on GeoSOS-FLUS
- Author(s):
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YANG Weiqing, ZHANG Huilan
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(Three-Gorges Reservoir Area(Chongqing)Forest Ecosystem Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China)
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- Keywords:
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ecosystem service value(ESV); multi-scenario simulation; GeoSOS-FLUS; land use change
- CLC:
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X171; X321
- DOI:
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- Abstract:
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In order to explore the spatial-temporal changes of land use structure and its ecosystem service value in the Fujiang River Basin, and support future land planning through prediction scenarios, based on five remote sensing images from 1980 to 2018, we constructed an ecosystem service value evaluation model to analyze the dynamic changes of time and space, and used GeoSOS-FLUS to simulate the evolution trend of future land use change and ecosystem service value under four scenarios: natural development scenario, cultivated land security scenario, ecological protection scenario and rapid development scenario. The results showed that:(1)from 1980 to 2018, the cultivated land area decreased by 542.25 km2, the decrease rate was 2.57%, and the construction land expanded by 525.66 km2, the increase rate was 255.50%;(2)the value of ecosystem services increased from 77.648 billion yuan in 1980 to 78.367 billion yuan in 2018; and the contribution order of different land use types to ecosystem service value was woodland>cultivated land>water area>grassland>unused land;(3)the value of ecosystem services in the upper reaches was higher than that in the lower reaches; the value of ecosystem services in the lower reaches decreased from the middle to the east and west; the southwest of the basin is the low value area of ecosystem services;(4)under the four development scenarios, the value of ecological services in 2030 was 78.480 billion yuan, 74.031 billion yuan, 81.109 billion yuan and 75.140 billion yuan, respectively, which changed 144 million yuan(increase), -4.305 billion yuan(decrease), 2.774 billion yuan(increase)and -3.196 billion yuan(decrease)compared with 2015. To sum up, the ecological value of the basin had improved in the past 38 years. At the same time, the simulation results show that it is necessary to strengthen the cultivation of ecological land in order to maintain the ecological security of the basin.