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Penelitian ini bertujuan untuk mengidentifikasi pohon inang epifit (porofit) pada hutan bekas tebangan setelah 6 tahun pembalakan seluas 12 hektar di Hutan Penelitian Malinau (MRF-CIFOR) pada hutan dataran rendah DAS Malinau. Pohon inang epifit di hutan bekas tebangan ditemukan 50 pohon per hektar, yang terdiri dari 162 spesies dalam 42 suku dengan 484 pohon (79.9%) berdiameter 20-51 cm. Pohon inang dari family Dipterokarpa di temukan paling banyak di hutan bekas tebangan (± 50%). Shorea parvifolia Dyer. merupakan pohon inang paling banyak ditemukan (34 pohon). Kata kunci: pohon inang epifit, Dipterokarpa, hutan bekas tebangan, hutan dataran rendah, Daerah Aliran Sungai

Forest land allocation and use in Indonesia have been politically contested and characterized by poor data and competing interests of different institutions. This study analyzes the process of integrating scientific findings in policymaking about land use and changes. The focus is on the processes related to the changes of Highly Important Forest Zones with Strategic Values (Dampak Penting Cakupan Luas dan bernilai Strategis/DPCLS). DPCLS forests are unique as any changes require approval from the parliament to complement the processes at the Ministry of Environment and Forestry and must be based on rigorous scientific evaluation. This study uses the case of Riau Islands (Kepri) Province, previously part of Riau Province, which to date is one of only two Indonesian provinces yet to accept the forest zonings of the Ministry. The province’s strategic positions as exclusive economic and free trade zones make it further interesting in terms of land allocation as land becomes increasingly valuable for other uses. This paper specifically asks how the scientific investigation on the potential land use changes were conducted, how reliable the discoveries are, and how they were utilized in multiple steps at different institutions from the proposal evaluations to the approval stages. Our research indicates that scientific findings have rarely been integrated in policy making regarding DPCLS forests in Kepri Province. In addition, the scientific findings are weak; the institution producing them is heavily dominated by government officials and paid consultants/ experts. The scientific body was only established to fulfill the formal processes required by the regulatory frameworks. Proposals and decisions on the changes of DPCLS forests in Kepri Province are more characterized by political considerations. The “scientific findings” of the current land use in Kepri Province is used as a political commodity (or commodities) to support the interests of actors.

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Kutai Timur Regency has 3 KPHs (Kesatuan Pengelolaan Hutan or Forest Management Unit = FMU), namely KPH Bengalon, KPH Kelinjau, and KPH Manubar. Many studies and considerations within Kutai Timur's forest, mainly of the factors of accessibility extent, KPH Bengalon had been recommended as a model (pilot project) of KPH. This research aims to study some aspects supporting the achievement of the Production Forest Authority Unit's development. A case study was conducted on KPHP (Kesatuan Pengelolaan Hutan Produksi or Production Forest Management Unit) Bengalon in Kutai Timur Regency. This research was conducted in an area that had been planned to be a KPH in Kutai Timur Regency, that is KPHP Bengalon that includes nine districts, they are Bengalon,

Abstract. Sopian A, Hardwinarto S, Aipassa MI, Sumaryono. 2019. Gap analysis of land availability and land needs to identify potential development of agricultural lands in Santan watersheds, East Kalimantan, Indonesia. Biodiversitas 20: 1097-1105. Pressures caused by high population growth in various places increase the needs for lands. The aims of this research are to determine the availability and needs of agricultural lands in Santan 1 and Santan 2 watersheds, East Kalimantan, Indonesia as well as to classify land capability which are key aspects in managing land resources. Land availability was determined based on the local actual total production of all commodities, such as agriculture, plantation, and livestock at the sub-district level. Land needs were determined based on the land area required for decent life needs per resident. While land capability was determined using weighting analysis of the limiting factors. Results of this study show that land availability on Santan 1 and Santan 2 watersheds is inadequate to fulfill the needs of inhabitants for agricultural lands. There are 19,053 hectares of lands currently available for agriculture, while there are 56,969 hectares of lands required for agriculture, implying a deficit of 37,916 ha of land. Analysis on land capability shows that lands with eutropepts and tropudults soil with total extent of 16,650,9 hectares are potential to be developed for dryland agriculture, such as seasonal crops, while tropohemist soil is suitable for farmland development, such as lowland rice. The spatial plans in Santan 1 and Santan 2 watersheds do not have adequate lands with agricultural capability since the cultivation areas are situated in VI and VII class with limiting factor of slope and erosion. We find there is undeveloped land in the form of bushes with an extent of 12,989,3 hectares in Santan 1 watershed and 7,055.54 hectares in Santan 2 watershed as potential lands to be developed for dryland agriculture. The results of this study suggest that when establishing neighborhood and hamlet should refer to soil characteristics with certain land capability and cultivation activities not to be done on lands with slopes of >15%.

The Sangkulirang-Mangkalihat area has tremendous natural resources one of them is water resources. The availability of water in karst area needs to be recognizing in order to fulfill the water demand of the community around karst area. This study aims to identify water availability and water demand in karst area. Water availability identified by Thornthwaite-Mather water balance method and calculation of water demand performed for domestic water demand, agricultural water demand and livestock water demand. The result shows that annual rainfall of karst area is 2036 mm/year. The amount of water availability is 177.6 million m3/year, while domestic water demand is 1.33 million m3/year, agricultural water demand is 73 million m3/year and livestock water demand is 142.8 thousand m3/year. Comparison between the availability of water and the water demand of karst area shows that the water conditions are still able to meet the needs of the community.

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