Jurnal Manajemen Hutan Tropika
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The Effect of Vegetation Community and Environment on Gyrinops versteegii Growth
No full textAlthough Gyrinops versteegii has been domesticated by local community in Sragen Regency, the environmental factors and species which have high compatibility with G. versteegii still have not known yet. The objectives of this research were 1) to know which one of those vegetation communities that gives the best the diameter and height growth of the domesticated G. versteegii, and 2) to know the environmental factors that influenced the growth of the diameter and height of the domesticated G. versteegii. Sampling was done systematically with a plot of size 20 × 20m for trees, 10 × 10m for poles, and 5 × 5m for saplings with a total of 28 plots. SPSS Program version 22 was used for cluster, one-way anova, correlation, and multiple regression analysis. The results showed that for achieving the best G. versteegii growth, the G. versteegii should be planted under the community group which was dominated by Paraserianthes falcataria, Tectona grandis, Gliricidia sepium, and Eugenia aquea. Environmental factors affecting diameter growth of G. verteegii were organic carbon of the soil and the vegetation density. Meanwhile the environmental factors affecting the height growth of G. versteegii were temperature, light intensity, relative light intensity, organic carbon, C N ratio, P, Mg, air humidity, and clay content
Habitat Suitability of Release Site for Javan Gibbon (Hylobates moloch) in Mount Malabar Protected Forests, West Java
No full textThe javan gibbon reintroduction program requires assessment of suitable habitat within release sites to assure the survival of released gibbons. We studied habitat suitability for javan gibbon beginning in April 2017, extending to June 2017 in the Mount Malabar Protected Forest (MMPF), West Java. The objectives of this study were to analyze the habitat suitability of the release site for javan gibbon in MMPF. Analysis of Geographical Information System (GIS) and Principal Component Analysis (PCA) approach were used to obtain habitat suitability values. Habitat suitability variables measured are elevation, Normalized Differential Vegetation Index (NDVI), Bareness Soil Index (BSI), distance from the road, farming, settlement, and open field. We found suitability valued areas consisting of high suitability covered 2,009.23 ha (22.31%), moderate suitability covered 2,497.46 ha (27.73%), and low suitability covered 4.499,65 ha (49.96%), from a total area ± 8.894,47 ha in MMPF
Possibility of Harnessing Social Capital to Support the Development of Payment for Environmental Services in Small-Scale Forests: A Case of Jatigede Catchment Area
Get PDFThe concept of social capital has gained attention as a source of support in implementing Payment for Environmental Services (PES). Environmental services, in the context of better water yields in watersheds, is affected by good land cover conditions of forests including small-scale private owned forests. Although some research results indicate that private owned forests are more economic oriented than environmental functions, but its existing social capital can be harnessed to implement PES in small-scale forests. The aim of this study was to analyze the potential of social capital as a source of support in the implementation of PES. The research was conducted by survey method. This research revealeds that the level of trust in local community leaders is very high. This role models can be an key entry point for realizing the PES scheme by strengthening the common knowledge of environmental benefits of small-scale forests and strengthen community norms related to the protection of water resources. Leadership and networking capabilities of the community institution leader give a real influence in collaboration between groups
Firewood and Carpentry Wood Contribution to the Communities of Mutis Timau Protected Forest, Timor Island
Get PDFThe existence of Mutis Timau Protected Forest (MTPF) has given a real contribution to the community by providing household energy needs and raw materials for building the houses. This preliminary study is aimed at knowing the contribution of M T PF in terms of firewood and carpentry wood consumption in the community. The study was conducted in 9 villages located in and around MTPF. This study used surveys and employed descriptive analysis with 353 families spread proportionally on every village as the sample. The results show that MTPF contributed to as much as 87.45% of the total firewood consumption of the community living in and around the protected forest, while the remaining 12.55% was supplied from the gardens. These percentages were calculated from the total firewood consumption of 1,912,512 kg year-1. Meanwhile, every 15-20 years, MTPF contributed to 96.98% of the total carpentry wood needs (1,177.3 m3) while the remaining 3.02% was supplied from privately owned gardens. This fact indicates that the dependence level of the community on the forest is high. Consequently, the pressure on the forest is also very high and may cause deforestation and degradation. To prevent deforestation and degradation, social participation in the sustainable management of MTPF is needed. The principles of social forestry must be implemented through social forestry programs such as community empowerment
Returns from Indigenous Hunting in The Lowland Coastal Forests of West Papua, Benefits Threatened Wildlife Species
No full textWe conducted a study in eleven villages in the West Papuan Bird\u27s Head Peninsula to determine hunting returns from indigenous hunting in lowland coastal forests. In each town three collaborative hunters were recruited and trained to complete an information sheet for each hunting trip whether or not they were successful, and if so, how many individuals per species were killed and their common names. The results indicated that hunting returns during seven months of observations were 301 animals comprising of timor deer, wild pig, dusky pademelon, grizzled tree kangaroo and common spotted cuscus. The most commonly hunted were two non-native species-wild pigs and deer with a total of 11,475 kg of dressed weight harvested and which we valued at IDR230,625,000 (US$17,435). A lowland forest ecosystem along the coast provides suitable habitats for the largest animals occurring within the sampled villages, like deer and wild pig. Hunting those species–deer and wild pig may provide conservation benefits to native species. There was little evidence of hunting native species or those of conservation concern. From ecology perspective, prey species and hunting return across the lowland coastal forest of West Papua has introduced wildlife species occurring at degraded habitat. Economically, the number of species hunted within the sampled village areas is determined by the hunter\u27s assessment of profitability. Deer and wild pig are targeted because they provide a large amount of meat for both subsistence and sale purposes
Early Growth of Acacia mangium × Acacia auriculiformis Hybrid in a Clonal Test at Three Different Sites in Indonesia
No full textAbstractAcacia mangium × Acacia auriculiformis hybrid is a promising new option for forest plantations that is propagated using clonal technologies. However, its deployment must be supported by an understanding f how clones respond to differing environment conditions. A multi-site test is therefore necessary; in this study, three sites, one in Central Java, and one each in Riau and Jambi were used. Between 20 and 44 clones were used at each site, and nine were common to each site. Each trial was laid out in a randomized complete block design with between four and 20 replications, and a between-tree spacing of either 3 × 3 m or 3 × 2 m. Height (H), diameter at breast height (D) and volume (V) were measured two years after planting. Growth rates in Riau and Jambi were substantially higher than in Central Java, a difference that can be attributed to soil type and rainfall. Significant differences were found among the clones for all these variables at all the three sites. For the three sites, clone repeatability was high and ranged from 0.91 to 0.97; ramet repeatability was moderate and ranged from 0.49 to 0.59. Clone x site interaction was highly significant in all parameters observed. For the nine common clones, multi-site clone repeatability was also high (0.93-0.96), but ramet repeatability was low (0.26-0.35). The best performing clones were Clones 4, 6 and 44. However there were differences in ranking, and only Clone 44, in Central Java and Riau, was the best performing. The experiment has shown the importance of these trials for developing strategies for deploying clonal stock. However the results suggest that it will take longer than two years for a clear pattern of differences between clones to emerge.Keywords: new variety, clone, repeatability, multi-sit
Lingga Isaq Hunting Park as A Basis for Sustainable Management: A Socio-Economic Study
No full textThe management of conservation and socio economic condition of surrounding communities are always connected each other. The similar case can be found in Lingga Isaq Hunting Park (LIHP), one of the conservation areas located in Aceh Province. This study is aimed to examine socio-economic conditions of the community around LIHP as the basic data to improve the effectiveness of area management. Data were collected through a technical survey by interviewing 120 respondents who were randomly selected from two sub districts namely; Bintang and Linge where each sub district consists of three villages. The results showed that 52.57% of total community income is obtained from coffee plantation which planted within the LIHP area. The level of hunting park contribution to community income, indicates that the communities are highly relies on LIHP area. However, the level of community participation is very low either individually or as a group. The participation is limited to securing and maintaining the area from the forest fires. Local community wisdom is still applied in land clearing and hunting method within the area. Supervision, fostering partnership, relationships between communities and LIHP managers are required to improve community capacity and conservation awareness. As in return, it will reduce community dependence and utilization of LIHP’s land. This study also recommends the need to actively engage with non-governmental organisation or civil society as part of LIHP’s sustainable management. It is intended to improve community welfare and provide opportunities for local wisdom development in the management of LIHP
REDD+, Conservation, and Conversion
Get PDFThe effectiveness of periodical payment for forested lands as an incentive system to stop a conversion of forested lands is analyzed. Four simple models are outlined and analyzed to investigate behavior of the land manager whether to maintain the lands remain forested or to convert them to other uses. The analysis is pure theoretical employing the optimal control theory. A key element to induce the land manager to adopt forest conservation rather than forest conversion is a combination of periodical payments for the forested lands and the desirable scrap value. Without the desirable scrap value, periodical payments of carbon stock, regardless of the tariff, cannot stop the conversion; the tariff affects only the time when the conversion will be conducted but it is not sufficient to induce the land manager not to convert the forested lands. On the basis of this analysis, then policy implication is outlined. In order to provide the desirable scrap value, then a policy change is required. However, its implementation very likely encounters serious challenges from the land manager.