Landscape Characteristics and Ecological Risk Assessment Based on Multi-Scenario Simulations: A Case Study of Yancheng Coastal Wetland, China

Sustainability

Luodan Cao¹  Peng Tian¹  Jialin Li¹  Changda Li²  Ruiliang Pu³  Hongbo Gong⁴ 

[1] Department of Geography & Spatial Information Techniques, Ningbo University, Ningbo 315211, China;Marine and Fishery Development Research Center of Dongtou District, Wenzhou 325799, China;School of Geosciences, University of South Florida, Tampa, FL 33620-5250, USA;School of Law, Ningbo University, Ningbo 315211, China;

关键词: multi-scenario simulation;    CA–Markov model;    landscape ecological risk;    Yancheng Coastal Wetland;   

DOI  :  10.3390/su13010149

来源: DOAJ

【 摘 要 】

Carrying out coastal wetland landscape simulations and current and future ecological risk assessments is conducive to formulating policies for coastal wetland landscape planning and promoting the coordinated development of the social economy and ecological environment. This study used the Cellular Automaton (CA)–Markov model to simulate the landscape data of the study area under different scenarios in 2021 and 2025, and built an ecological risk assessment (ERS) index model to analyze the differences of spatio-temporal characteristics of ecological risks. The results showed that: (1) The test accuracy of the CA–Markov model was 0.9562 after passing through the consistency test. The spatial distribution data of landscapes under current utilization scenarios (CUSs), natural development scenarios (NDSs), and ecological protection scenarios (EPSs) were gained through simulations. (2) During 1991–2025, the landscape types of Yancheng coastal wetlands undertake complicated transfers and have vast transfer regions. Under CUSs and NDSs, a large number of natural wetlands are transferred to artificial wetlands. Under EPSs, the area of artificial wetlands declines and artificial wetlands are mainly transferred to natural wetlands. (3) The ecological risk of Yancheng Coastal Wetland increases, accompanied with significant spatial heterogeneity, which is manifested as low in the north area and high in the south area, and there exist some differences between sea areas and land areas. Ecological risk levels transfer violently.

【 授权许可】

Unknown