[1]Lan Guiwen,Zhang Fan,Wu Jing,et al.Spatiotemporal Differentiation and Dynamic Simulation of Production-Living-Ecology Function in Lijiang River Watershed[J].Research of Soil and Water Conservation,2024,31(02):431-442.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
31
Number of periods:
2024 02
Page number:
431-442
Column:
Public date:
2024-03-20
- Title:
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Spatiotemporal Differentiation and Dynamic Simulation of Production-Living-Ecology Function in Lijiang River Watershed
- Author(s):
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Lan Guiwen1, Zhang Fan1, Wu Jing2, Jiang Fan2
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(1.College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, Guangxi 541006, China; 2.Natural Resources Ecological Restoration Center of Guangxi Zhuang Autonomous Region, Nanning 530022, China)
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- Keywords:
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production-living-ecology function; scenario simulation; PLUS model; Lijiang River watershed
- CLC:
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F301.2
- DOI:
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- Abstract:
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[Objective] The aims of this study are to analyze the dynamic variation characteristics of the spatiotemporal distribution of the production-living-ecology function in the Lijiang River watershed, to predict its future change trend in the natural development scenario and the ecological protection scenario, respectively, and to provide a decision-making support for the sustainable development of the karst watershed. [Methods] With the land use data of Lijiang River Watershed of 2010, 2015 and 2020, the gravity center model was used to analyze the movement of the gravity centers of the production-living-ecology function, and the Patch-Generating Land Use Simulation Model(PLUS)model was used to analyze and simulate spatial-temporal variation characteristics of the production-living-ecology function in the Lijiang River watershed. [Results](1)From 2010 to 2020, the index of production function(PF)and living function(LF)increased by 0.77% and 23.85%, respectively, and the areas with high-value of PF and LF concentrated in the lower elevations of the study area and Guilin urban area, respectively. The ecologly function(EF)index decreased by 1.39% over the same time period, and the area of high-value of EF distributed along high elevations.(2)The areas of enhanced PF and LF in the latter stage increased by 4.0% and 11.6% from the previous period, respectively, while the areas of weakened function decreased by 3.2% and 9.4% from the previous period, respectively. The areas of enhanced and weakened EF decreased by 16.4% and increased by 17.3% from the previous period, respectively.(3)In the past ten years, the centers of gravity of PF and LF moved to the northwest as a whole, while the center of gravity of EF moved to the southeast as a whole.(4)Compared with 2020, in the natural development scenario, the mean values of PF and LF in 2030 increased by 0.278 and 0.4, respectively, while the mean value of EF decreased by 0.138. In the ecological protection scenario, the mean values of PF, LF and EF in 2030 increased by 0.421, 0.211 and 0.06, respectively. [Conclusion] The PF and LF in the Lijiang River watershed had been enhanced overall, while the EF had been weakened, but the overall amplitude of change of EF was the largest among the three functions. The simulation results of ecological protection scenarios are more in line with the development goals of the Overall Territorial Space Plan of Guilin City(2021—2035).