Assessment of ecosystem services value in Linghekou wetland based on landscape change

Abstract

Analyzing and evaluating ecosystem services value of coastal wetland can provide theoretical basis and technical support for ecological environment protection, local economic development and relevant policy formulation. Based on social economy characteristics and ecological environment factors, the ecosystem services value of the Linghekou wetland in 2019 was evaluated by the functional value approach and the equivalent factor approach, the results were 3.17 × 10 8 dollars and 1.87 × 10 8 dollars. By analyzing and comparing the results, the equivalence factor approach is more suitable for assessing the ecosystem services value of the Linghekou wetland. Equivalent factor approach was applied to evaluate ecosystem services value of the Linghekou wetland in 2005, 2009, 2015, 2019 for a better understanding of changes for ecosystem services value with respective value was 2.06 × 10 8 dollars, 2.12 × 10 8 dollars, 1.41 × 10 8 dollars and 1.87 × 10 8 dollars, overall tendency is upward then downward later, followed by a slow increase. Regulation services took the highest proportion among all functions, respective percentage was 35.92%, 35.85%, 34.04% and 34.76% in 2005, 2009, 2015 and 2019 with an average percentage was 35.14%, which is the leading function of the Linghekou wetland. • Investigated the landscape pattern evolution characteristics based on landscape area change and ecology index. • Compared and analyzed the assessment results by the functional value approach and the equivalent factor approach. • The dominant services function of Linghekou wetland is the regulation service.