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All Journal Biodiversitas Journal of Biological Diversity
KARMINI KARMINI
Faculty of Agriculture, Universitas Mulawarman. Jl. Pasir Balengkong, Kampus Gunung Kelua, Samarinda 75119, East Kalimantan, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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The allometric equations for estimating above-ground biomass in a 50 years-old secondary forest in East Kalimantan, Indonesia KARYATI KARYATI; KARMINI KARMINI; KUSNO YULI WIDIATI
Biodiversitas Journal of Biological Diversity Vol. 24 No. 3 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240318

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Abstract. Karyati, Karmini, Widiati KY. 2023. The allometric equations for estimating above-ground biomass in a 50 years-old secondary forest in East Kalimantan, Indonesia. Biodiversitas 24: 1482-1492. Secondary forests, formed through several disturbances over the decades, have important roles in ecological and economic aspects. One of their roles in ecological aspects is the potential to store carbon. Therefore, this study aimed to develop allometric equations for estimating above-ground biomass and carbon stock in a 50 years-old secondary forest. In this field, 30 trees representing the dominant species and diameter class distribution were selected and cut down. The dry biomass of the tree's parts, including leaves, branches, and trunks, was assessed using the destructive method. The relation between trunk dry biomass and Diameter at Breast Height (DBH) showed moderate adjusted R2 value ??(0.641). Moreover, moderately strong relationships were shown by above-ground biomass with DBH (adjusted R2 of 0.516). The allometric equation to estimate above-ground biomass in 50 years-old secondary forest is useful for estimating the carbon potential in other areas of the same age, especially with a similar land use history. Information regarding biomass and carbon stock is important for forest management in general. It can assess carbon stocks, sequestration rates, and potential emissions from forests subjected to a succession process.
Climatological aspects and visitors' comfort perceptions in green open spaces of Samarinda City, East Kalimantan, Indonesia KARYATI KARYATI; KARMINI KARMINI; DIAH RAKHMAH SARI; YOSEP RUSLIM; MUNA KARHANI
Biodiversitas Journal of Biological Diversity Vol. 26 No. 6 (2025)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d260625

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Abstract. Karyati, Karmini, Sari DR, Ruslim Y, Karhani M. 2025. Climatological aspects and visitors' comfort perceptions in green open spaces of Samarinda City, East Kalimantan, Indonesia. Biodiversitas 26: 2806-2820. The trees in Green Open Spaces (GOS) play an important role in improving the microclimate, especially in urban areas. This research study aimed to analyze climatological aspects and determine visitor perceptions of GOS comfort in Samarinda City, East Kalimantan, Indonesia. Microclimate elements were measured for 30 days in nine GOS: Anang Hasyim Ecological Park, Cerdas Park, Segiri Park, Samarendah Park, Teluk Lerong Garden Park, Bebaya Park, Muso Salim GOS, RE Martadinata GOS, and Slamet Riyadi GOS. The comfort of these GOS was assessed based on their Temperature Humidity Index (THI) values and the perceptions of visitors to these locations. Visitors' perceptions of microclimate comfort were collected through interviews with 270 respondents (30 respondents in each of the nine GOS). The average light intensity in the nine GOS ranged from 586.3 to 1,117.1 lux, the average air temperature ranged from 28.4-29.1°C, and the average air humidity ranged from 78.1-82.3% during the study period. All of the GOS within this study had a THI of less than 29.0°C and were in the comfortable category, highlighting the positive impact of the microclimate. The analysis of these nine GOS shows that the majority of the 270 respondents have a good perception of their microclimate and comfort. Information about climatological aspects and perceptions of GOS visitors can be used to support databases and recommendations for GOS management related to regional spatial planning.
Co-Authors DIAH RAKHMAH SARI KARYATI KARYATI KARYATI KARYATI KUSNO YULI WIDIATI MUNA KARHANI YOSEP RUSLIM