Arenga pinnata is a plant that has potential for the community as a source of income that can improve the welfare of the community because most of them get a source of income from processing this plant. Almost all parts of the sugar palm plant can be utilized, from the roots to the male flower bunches that can produce sap.Plant structure is the organization of individuals in space and composition is the arrangement of forest stands that includes the number of species or the number of individuals. Composition means also studying the distribution of a plant species based on density, frequency and dominance value. Vegetation structure is the result of spatial planning by stand components or plant communities in a community both vertically and horizontally. The purpose of this study was to determine the potential distribution of sugar palm growth rates in one of the districts in South Kalimantan, Hulu Sungai Tengah. The analysis was carried out by calculating the significant value index (INP) based on the values of Density, Frequency and Dominance. Data were collected using the plotted path method. The results showed that the density of sugar palm seedlings was very large, with an average of 13,055 seedlings/Ha (INP: 200%), the average pole density was 217 stems/Ha and the tree level averaged 90 trees/Ha. The number of panicles, which is the part that is used as raw material for making brown sugar, amounts to an average of 90 panicles/ha.

The purpose of this study was to determine the damage to ramin (Gonystylus bancanus) stands in Punggualas Sebangau National Park, Central Kalimantan. The research location was determined by purposive sampling on the transect line at Punggualas. This observation is carried out by exploring the transect line that has been determined so that the data in the form of ramin stands can be found and the damage is observed in stages, then the coordinates of the ramin point are taken using GPS. In this observation, 22 ramin stands were found in which the most damage occurred in the leaves of ramin, namely as many as 35 cases of damage with the most damage type were leaf color changes as many as 20 cases of damage and with the most dominant severity level was 20-29%.From the dominant severity with a value of 20-29% it can be seen that the damage suffered by ramin stands is in the mild category.Tujuan dari penelitian ini adalah untuk mengetahui kerusakan tegakan ramin (Gonystylus bancanus) di Punggualas Taman Nasional Sebangau Kalimantan Tengah. Lokasi penelitian ditentukan secara purposive sampling pada jalur transek di Punggualas. Pengamatan ini dilakukan dengan cara menjelajah jalur transek yang sudah ditentuan agar data yang berupa tegakan ramin dapat ditemukan dan langsung diamati kerusakannya secara bertahap kemudian titik koordinat ramin diambil menggunakan GPS. Pada pengamatan ini ditemukan sebanyak 22 tegakan ramin yang mana kerusakan terbanyak terjadi pada bagian daun ramin yaitu sebanyak 35 kasus kerusakan dengan tipe kerusakan terbanyak adalah perubahan warna daun sebanyak 20 kasus kerusakan dan dengan tingakat keparahan paling dominan adalah 20-29%. Dari tingkat keparahan dominan dengan nilai 20-29% dapat diketahui bahwa kerusakan yang diderita oleh tegakan ramin di Punggualas Taman Nasional Sebangau masuk dalam kategori ringan.