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All Journal Environmental Pollution Journal Journal of Biodiversity and Biotechnology
Endang Hernawan
Institut Teknologi Bandung
Agriculture, Biological Sciences & Forestry Humanities Chemistry Engineering Environmental Science Law, Crime, Criminology & Criminal Justice

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Existence Value of Post-Mining Conservation Area: A Contingent Valuation Study of Lati Petangis Grand Forest Park, East Kalimantan Eni Rohkayati; Rahmawaty; Endang Hernawan
Environmental Pollution Journal Vol. 6 No. 1: April 2026
Publisher : ECOTON: Ecological Observation and Wetlands Conservation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58954/epj.v6i1.457

Abstract

Quantifying the existence value of post-mining conservation areas is essential for justifying their legal protection and securing conservation finance, yet such assessments remain scarce in Indonesian tropical settings. This study estimates the existence value of Lati Petangis Grand Forest Park (Tahura Lati Petangis/TLP), a conservation area established from former coal mining land in Paser Regency, East Kalimantan. The Contingent Valuation Method (CVM) with a Willingness to Pay (WTP) approach was applied to 96 visitor respondents. Results show a weighted mean WTP of IDR 178,486 per individual with an 87.5% participation rate. The existence value was estimated at IDR 21,284,188,625 for the visitor population and IDR 752,608,083 for surrounding local communities, yielding a combined total existence value of IDR 22,036,796,708 per year, equivalent to 2.29% of the total economic value under the moderate scenario. The high existence value reflects strong public support for preserving this post-mining landscape and provides empirical grounding for conservation policy and Payment for Ecosystem Services mechanisms at comparable restoration sites across Indonesia.  
Valuing And Characterization of Smallholder’s Forest In West Java Endang Hernawan; Tien Lastini; Mia Rosmiati
Journal of Biodiversity and Biotechnology Vol 4, No 1 (2024)
Publisher : Pusat Penelitian dan Pengembangan Bioteknologi dan Biodiversitas (P3BB) LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jbb.v4i1.81489

Abstract

Today, smallholder forests in West Java - Indonesia play an important role as suppliers of domestic and industrial wood needs. However, with forest managers who are not yet professional and the easy conversion of land use into non-forest, smallholder forests cannot guarantee the sustainability of wood supply. In supporting the implementation of sustainable forest management in smallholder forests, understanding is needed regarding the characteristics of smallholder forests. The purpose of this study is to evaluate the characteristics of smallholder forest stands as a basis for assessing the sustainability of wood raw material supply. The research location is smallholder forest in Sumedang district. Data collection method is a purposive sampling method with moving plot. The results indicated that the density of smallholder forests per ha was 342.5 trees per ha, with 14 species of trees. The distribution of tree diameters ranges from 1-49 cm, with a predominant class diameter of 10-15 cm. The potential stands for smallholder forests are 32.68 m3ha-1. The cutting felling cycle is at the age of 6.5 years with a selective logging system at a diameter size of more than 15 cm, so it is not optimal and there is a tendency that it will not continue. Therefore, in increasing its sustainability, it is necessary to increase the cutting life. So, there is a tendency for community forest areas to be converted into other land uses.
Co-Authors Eni Rohkayati Rahmawaty, Rahmawaty Rosmiati, Mia Tien Lastini