Nilai Ekonomi Mangroves: Sebuah Meta-Analisis

Abstract

This article presents a synthesis of literature that evaluates mangrove ecosystems through metaregression analysis. The main contribution of this study is the first meta-analysis that only focuses on mangrove forests, as one type of wetland in Riau province, Indonesia. The number of studies included in the regression analysis was 44 for a total of 145 observations. We include several regressions with the aim of overcoming outliers in the data as well as possible correlations between observations from the same study. We also investigate possible interaction effects between service types and GDP per capita. Our findings show that mangroves show a decrease in scale results, that GDP per capita has a positive effect on mangrove values, using replacement costs and contingency valuation methods produce higher estimates than using other methods. We also found that there were statistically significant interaction effects that affected the data. Finally, the results of this study indicate that using a weighted regression can provide better compatibility than the others. However, in terms of forecast performance, we found that all the models that were estimated to be carried out, in the same way, were unable to conclusively conclude whether one of the performances could exceed the others