Plus-InVEST Study of the Chengdu-Chongqing Urban Agglomeration’s Land-Use Change and Carbon Storage

Chaoyue Wang, Tingzhen Li, Xianhua Guo (), Lilin Xia, Chendong Lu and Chunbo Wang
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Chaoyue Wang: Research Institute of Three Gorges, Chongqing Three Gorges University, Chongqing 404100, China
Tingzhen Li: Research Institute of Three Gorges, Chongqing Three Gorges University, Chongqing 404100, China
Xianhua Guo: Research Institute of Three Gorges, Chongqing Three Gorges University, Chongqing 404100, China
Lilin Xia: Research Institute of Three Gorges, Chongqing Three Gorges University, Chongqing 404100, China
Chendong Lu: Institute of Strategic Planning, Chinese Academy of Environmental Planning, Beijing 100043, China
Chunbo Wang: Research Institute of Three Gorges, Chongqing Three Gorges University, Chongqing 404100, China

Land, 2022, vol. 11, issue 10, 1-19

Abstract: Based on China’s “carbon neutrality” strategy, this study explores the relationship between land-use/cover change and temporal and spatial changes of ecosystem carbon storage in urban agglomerations. Using the Plus-InVEST model, the projected spatial patterns of land use in the Chengdu-Chongqing urban agglomeration in 2030 under natural development and ecological protection scenarios were simulated and predicted, and the characteristics of carbon storage, together with its spatio-temporal dynamics, were evaluated under two scenarios. Results show that: (1) From 2000 to 2020, forests, water areas, construction areas, and unused land continued to increase, while the area of cropland and grassland decreased continuously. During the last 20 years, carbon storage in urban agglomeration showed an increasing trend, with an overall increase of 24.490 × 10 6 t. (2) Compared with the natural development scenario, forest land, grassland, and water area in 2030 under the ecological protection scenario exhibits a substantial change; the area of construction land is limited; and an ecological spatial effect is reflected. (3) Compared to 2020, carbon storage under natural development and ecological protection scenarios decreased by 50.001 × 10 6 t and 49.753 × 10 6 t in 2030, respectively. The stability of carbon storage under the ecological conservation scenario was significantly higher than that under the natural development scenario. Therefore, under the ecological protection scenario, as a result of the coordinated land use of Chengdu-Chongqing, the functions of various regions can be coordinated and carbon storage losses can be mitigated.

Keywords: carbon storage; PLUS model; InVEST model; land use; urban agglomeration (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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