The purpose of this study was to identify the influence of Merapi eruption on theÂ valueÂ of theÂ environmentÂ atÂ MerapiÂ TNGMÂ region.ResearchÂ carriedÂ outÂ around the area oh Mount Merapi adjacent to protect forest area TNGM, covering 13 villages namelyÂ Kepuharjo, Glagaharjo HargobinangunÂ sub district,Â Cangkringan and Pakem SlemanÂ District,Â Balerante, Tegalmulyo and Sideredjo, KemalangÂ sub district,Â Klaten District,Â Mranggen,Â Paten,Â MangunsokoÂ andÂ KrinjingÂ Villages,Â DukunÂ subÂ district,MagelangÂ DistrictÂ andÂ Tlogolele,Â JrakahÂ andÂ SamiranÂ Villages,Â SeloÂ SubÂ District, BoyolaliÂ District. The samples used were 220 farmers using simple random sampling method. Studied the impact ofÂ Merapi eruption was the eruption in 2006 and most of theÂ 2010Â eruption.Â EnvironmentalÂ economicÂ analysisÂ byÂ theÂ methodÂ ofÂ Contingent Valuation Method (CVM) were used. The results showed that the eruption ofÂ Merapi significantlyÂ effectedÂ onÂ basedÂ useÂ valueÂ andÂ existenceÂ value.Â DirectÂ useÂ valueÂ (dry treesÂ toÂ firewood,Â grassesÂ andÂ waterÂ consumptionÂ value)Â beforeÂ andÂ afterÂ eruption was 5.935 billions and billions 5.457 IDR per year whereas existence value (willining to payÂ andwilliningnes to acceptÂ value) was 223.90 millions and millions 230.16 IDRper year. The indirect use value (biodiversity, conservation and carbon storage value) onÂ 1.51Â billionsÂ IDRÂ perÂ year.Â BasedÂ onÂ theÂ totalÂ economicÂ valueÂ (TotalEconomic Value) of protected forest TNGM, a decline of 0.93 %, TEV values before and after eruption was 7.67 billions and billions 7.20 IDR per year.
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