1. LAND-USE CHANGE AND ECOSYSTEM SERVICE TRADE-OFF IN THE KARST-COASTAL ZONE OF SOUTHWEST GUANGXI, CHINA.
- Author
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HUANG, X. Y., YAN, Z. Q., HU, B. Q., YAN, Q. Q., PENG, D. X., and SHENG, K.
- Subjects
ECOSYSTEM services ,COASTAL zone management ,INTEGRATED coastal zone management ,FOREST management ,CONSERVATION of natural resources ,SOIL conservation ,VALLEYS ,COASTS - Abstract
Based on four periods of land use data in 2005, 2010, 2015 and 2020, we analyzed the spatial and temporal variation characteristics of land use and ecosystem services in the karst-coastal zone of southwest Guangxi, China, and used the InVEST model and scenario simulation method to assess the supply capacity of four ecosystem services, namely habitat quality, soil conservation, water yield and carbon storage, in the study area, and to explore the spatial and temporal trade-off or synergistic relationships of each ecosystem service. The research indicates: (1) Built-up land, farmland and forestland changed most significantly from 2005 to 2020, with the conversion of farmland to built-up land being the most dramatic, while forestland was the largest source of increase in farmland area.(2) The spatial distribution pattern of ecosystem services in the study area is not very variable, with high value areas for ecosystem services concentrated in nature reserves, forest parks and forestry management areas, and low value areas concentrated in the Left River-Right River-Yong River valleys and the coastal zone of Beibu Gulf.(3) Ecosystems in the study area are dominated by multiple service types, with high importance areas for integrated ecosystem services occurring mostly on forestland types. While general areas have weaker ecosystem services or tend to have a single type of ecosystem service, and occur mostly on land types such as built-up land and farmland. (4) The supply capacity of all ecosystem services in the study area decreases under the natural development scenario and the urban-rural expansion scenario, while the supply capacity of all ecosystem services increases under the ecological conservation scenario. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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