Indonesian tropical rain forest is known to have excellent species diversity for its wood and non wood forest production. Forest harvesting activities those diversity directly or indirectly. The impact of the activities includes decrease of forest biotic composition, even extinction of some species and also forest productivity decrease. In order to manage the log over areas, some information is needed to support the effectiveness of monitoring and evaluation activities by the decision maker to manage the next rotation program. (kalimat loncat). The important information include species diversity, similarity index, stand structure, and residual stand. This research aim ed to know the log over areas condition, related by several forest health monitoring indicators in order to achieve the sustainable forest management. A survey was done by field observation and measurement of the existing condition without any additional treatment. The observed and measured parameters and aspects were tree species and diameter; species diversity, similarity index, stand structure, and residual stand. The results showed at log over areas, species diversity was still high, similarity index was 51%, residual trees average was 30%, consisted of 22% of Dipterocarpaceae (commercial) tree, 30% of commercial non Dipterocarpaceae tree, and 43% of non commercial tree. Residual stand based on diameter class 10 cm ≥ D < 20 cm, 20 cm ≥ D < 40 cm, and 40 cm-up still remained 19%, 38%, and 40%, respectively. There was stand structure change, from formerly virgin forest to log over area.

Grazing area functions as food supplier for animal, especially big herbivore mammal, and center of animal activity, for instant: grooming, child caring, and other social interaction. Beside that, grazing area functions as habitat of various plant species included plant with function as natural pesticide. The objective to this research is to identify the species richness of plants functioning as natural pesticide on Bekol savanna area in the Baluran National Park. Data collection was done by determining sample quadrant size and sampling unit quantity as well as species density and frequency. Data were analyzed with Important Value Index (IV) method. Result of this research indicate that there were seven species functioning as natural pesticide out of 38 species at Bekol savanna area. It means that 18% of all species functioned as natural pesticide

As a new national park in Indonesia, Batang Gadis National Park (BGNP) needs comprehensive planning from stakeholders to manage its zonation in order to avoid mismanagement. The planning should emphasize a link between conservation rule and economics by empowering community around the national park. This research was conducted to provide information about diversities of flora in each forest types in BGNP and also alternative strategy to manage wilderness zone of BGNP. Four types of forest including montane primer forest, sub montane forest, secondary forest, and degraded land or forest were observed. The diversities of vegetation were measured at ten plots for each types of forest. The total number, diameter and height of trees at ten plots of each forest types were measured. The total numbers of sapling, seedlings, and under stories of the plots were also counted. All parameters were used to find diversity indices that include species richness, Shannon, Simpson, species abundance and similarity indices. The result revealed that 117 species were identified of which 14.5% was composed of dipterocarps species. Montane primer forest had relatively higher species diversity compared to three other forest types. The value of its species diversity ranged from 2.5 until 3.5. The value of similarity indices in all forest types is low with mean under 50%. Alternative programs which may be developed in wilderness zone include areal patrol and safety, research and development, enrichment planting on secondary forest and degraded land types, management of restricted ecotourism and also non timber forest product utilization.

A study of vegetation characteristic of proboscis monkey’s (Nasalis larvatus Wurmb) habitat at Mahakam Delta, East Kalimantan was conducted by establishing line-plots sampling method. The result recorded 46 plant species belonged to 44 genera and 31 familie growing in the habitat. Sonneratia caseolaris (L.) Engl. is the most dominant species of the vegetations, with stages of tree, pole, and seedling, each with the Important Value Index (IVI) of 262.7%, 113.6%, and 60.3%; respectively, while at the sapling stage, Hibiscus tiliaceus L. dominated the vegetation with the IVI of 70.0%. The most common tree species used by proboscis monkey for general activities like eating, resting, and sleeping included S. caseolaris (L.) Engl. and Heritiera littoralis Dryand. The plant species that produced food for this animal included S. caseolaris (L.) Engl., Syzygium sp., Uncaria sp., Premna corymbosa (Burm. f.) Rottl. & Willd., Vitex pinnata L., H. littoralis Dryand., Caesalpinia sp., Derris spp. (2 species), and Baringtonia sp.

The research of intensity and motivation of forest plant illegal taking was conducted in 4 resorts of Conservation Section II of Gede Pangrango National Park (GPNP) : Resort of Bodogol, Resort of Cimande,
Resort of Cisarua, and Resort of Bojong Murni. Data was collected by interviewing 118 respondents representing buffer zone communities of those 4 resorts. Data were analyzed using descriptive analysis. The result showed that the intensity of forest plant illegal taking out during the year 2005 was 9 cases in Resort of Cisarua, 11 cases in Resort of Bojong Murni, 3 cases in Resort of Cimande, and 14 case in Resort of Bodogol, with the plants stolen are: wood working (Altingia excelsa Noronha, Schima wallichii (DC) Korth.), wood for energy (Calliandra sp., bamboo Gigantochloa spp.), pakis (Diplazium sp.), and ornamental plant. The stealing agents come from the communities surrounding the forest area. Fuel wood illegal taking was the dominant case, occurred in all resorts and increased during 2003-2005; noted 16 loads was stolen in 2003; 32 loads in 2004; and 93 loads in 2005. Based on the information from the respondent about the sum of the citizens taking forest plants, the insecure rate are Resort of Cisarua, Resort of Cimande, Resort of Bodogol, and Resort of Bojong Murni respectively. The knowledge and understanding rate of communities about the national park existency still low, showed from 59.86% communities who clarify not understand about the  national park. Most of the community took the forest plants (bamboo and fuel wood) for their daily need (88,2%), only view caused by the order of others person (2,3%), or because they feel as usual activities and assumed as allowable activities (2,8%). Their low education and income rate motivated them to interact the forest. Most of the communities who took forest plants are labours (66.2%), with elementary school last education background (92.2%), and under 100,000.00 rupiahs/month income (59.9%)

Recreation is an activity to give pleasure and to refresh the people mentality. Punti Kayu Recreational Park (PKRP) is not only a natural recreation place in Palembang City but also popular for citizens. In spite of, the number of visits to PKRP is decrease every years. The aim study is to obtain information that determine visitors behavior factors at PKRP. The information can be used to improve the number of visits in the future. Collecting and processing data used likerts scale method. Data was analyzed by multiple regression model. The results show that the visitors behavior is influenced by promotion, product, price, and psychology factors but education and income factors don’t influence visitor behavior. In those factors psychology is the dominant factor

Sungai Wain Protection Forest in Balikpapan, East Kalimantan is the only forest area which still has a good condition of primary forest. Several forestry research activities had been conducted in this area, nevertheless much more reseraches and studies are still needed to support conservation and management practice in order to improve the forest environment and community livelihood. The aim of the present research was to investigate the ecological condition of forest, especially forest structure and species composition, and their diversity. Data were collected from nine research sample plots, each of 200 m x 20 m with a total of 3.6 ha. All trees of ≥ 10 cm in diameter (dbh) were recorded, meassured and identified. The results showed that the forest condition of Sungai Wain Protection Forest was characterized by the density of 532.50 trees/ha and basal area of 20.57 m²/ha, 385 trees species which belong to 143 genera and 49 families were recorded within the research sample plot areas. Based on number of species of each family, Euphorbiaceae was the most common family in the area, which consisted of 47 species. While, based on the importance value index of each species, it was recognized that Shorea laevis Ridl. was the most dominant species, followed by Madhuca kingiana (Brace) H.J. Lam, Gironniera nervosa Planch., and Eusideroxylon zwageri Teijsm. & Binnend. The diversity of vegetation was mainly indicated by the differences of species association of each plot and the similarity index values for the species composition between the forest stand, which was low, varied from 14.6% to 33.1%.

A taper model was developed for african-mahogany (Khaya anthoteca C.D.C) grown in Pasirhantap Experimental Forest in Sukabumi, West Java. The taper model can be used to estimate stem volume to any height by integrating the taper equation from the ground to that height. Data from 58 sample trees aged 35-60 years with the range of diameter of between 20 and 90 cm and the range of clearbole height of between 10 and 30 m were used for model development. Eight taper equations were evaluated, six of these equations were taken from the available literature, and the others were developed in the present study. Five performance indicator statistics (i.e. MRES, AMRES, RMSE, MEFadj, and AIC) were used for comparing the models in their ability to estimate tree diameter. Testing by means of independent data indicated that the new model developed in this study, i.e. dobh = 1,0236 + 0,8124 Dbh + 0,4960 Hcb – 1,4134 h + 0,0096 h² was found to be better than the other models in term of prediction accuracy (sum of ranks was the least, i.e. 6).  This model could be recommended for the estimation of diameter at a specific height of African mahogany stems in the area of study. Integration of this equation resulted in the volume equation:  v_{h1-h2 =}     which could be used to estimate both merchantable volume and total volume of the species

Study on the strategy for ecotourism development in proboscis monkey (Nasalis larvatus Wurmb.) habitat was conducted in Kuala Samboja, East Kalimantan. The objective of this study was to obtain information on the potential objects in prosboscis monkey habitat and its strategy for ecotourism development. SWOT (Strengths-Weaknesses-Opportunities-Threats) analysis was done to arrange the strategies for ecotourism development in this proboscis monkey habitat. The results showed that the SWOT matrix position laid in the conservative position, i.e. W-O (weaknesses-opportunities). Some strategies could be conducted such as building management board, package of integrative tourism, package of scientific adventure, increasing public awareness, and promotions. The ecotourism development is expected to create a good habitat and population of proboscis monkey through rehabilitation activity and to provide additional income for surrounding community.

This research was conducted in the Capar Protection Forest, Brebes, Central Java in July 2007. The aim of this research was to obtain information on the population status of Dipterocarpaceae species and the diversity of tree species in the study area. Data were collected from sample plots of 100 x 100 m where Dipterocarpaceae species were found (i.e. Mt. Bongkok and Cikadu blocks). The trees (more than 20 cm in diameter) within 10 x 10 m plots were inventoried, while seedlings (less than 20 cm in diameter) were inventoried at 5 x 5 mplots. Number of species and individuals, tree height and height to the first branch, diameter at breast height and crown diameter were recorded. The results showed that two species of Dipterocarpaceae (Dipterocarpus retusus Blume and Vatica javanica sub sp. javanica V.Slooten) were found in the two locations. In Mt.Bongkok 21 species of trees and 24 species of seedlings were recorded. In Cikadu 20 species of trees and 20 species of seedlings were recorded. The dominant tree species found in Mt. Bongkok was Macaranga rhizinoides Muell. Arg. (IVI = 25.46%) and the dominant seedling species was D. retusus Blume (IVI = 24.93%) with the highest diameter distribution was foundat diameter of < 10 cm of the tree stage in Cikadu Macaranga rhizinoides Muell. Arg. (IVI = 39.71%) was the dominant species while the seedling stage was dominated by Pterospermum javanicum Jungh. (IVI = 25.88%). The diameter distribution of D.retusus Blume in Cikadu was between 20 and 40 cm, and V.javanica sub sp.javanica V. Slooten was distributed mostly at the diameter class of 10 - 19.9 cm. The encroachment have caused a disturbance to alteration of micro ecosystem as a consequence of changes in stucture and composition to loss of vegetation such as population of Dipterocarps species. Protection forest area has an important function to protect the population of Dipterocarps species. An effort has been done on the sustainable natural resource management which is regulated in the Regional Regulation (Perda), i.e. smallholder plantation forest development involving local people.