Nilai Ekonomi Mangroves: Sebuah Meta-Analisis
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Date
2019-01-03
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wahyu sari yeni
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
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Keywords
mangroves, meta-regression analysis, non-market valuation