The objective of this study is to tree biomass and forest carbon stocks contained in the Tangkoko Nature Reserve (TNR) of North Sulawesi. Phylogenetic diversity was analysed based on tree species composition weighted by aboveground biomass. A stratified systematic sampling was used in the study across transect lines. Field measurements follow the method described in the SNI 7724:2019 on ground-based forest carbon accounting. Based on allometric approach, this study produces a quantity of 255.45 Mg.ha−1 of total biomass estimation consisting of 201.14 Mg.ha−1 AGB and 54.31 Mg.ha−1 BGB. A standard approach of C-stock calculation (i.e. 47% of tree biomass and 50% of soil organic biomass) results in quantities of 94.53 and 27.15 Mg.ha−1 respectively). The importance of species traits for biomass estimation should be considered by initiatives in reforestation for carbon offsetting.
This research aims to explore the factors that cause disturbances in conservation areas and determine strategies for dealing with disturbances in Conservation Areas on Mantehage Island, Bunaken National Park, using a combination of qualitative and quantitative methods. The factors causing the disturbance were obtained through observation, questionnaires and in-depth interviews. Furthermore, a SWOT analysis is used to formulate a strategy for overcoming disturbances based on the factors that cause disturbances that have been identified. It was found that the factors causing disturbances in the Bunaken National Park area were: weak law enforcement; lack of trained human resources (Forest Police); limited facilities and supporting infrastructure; and the economic limitations of the local population. Based on the results of the research, the strategy that can be used is the SO Strategy, which uses all the strengths of the organization to take advantage of opportunities. The strategy that can be used is the development of conservation through the protection and enhancement of the conservation of the TNB area by coordinating with communities, groups, institutions and government and developing a conservation partnership program on Mantehage Island through tourism development.
1) Mahasiswa S1 Program Studi Ilmu Kehutanan, Fakultas Pertanian Unsrat Manado, 95115 2) Staf Pengajar Program Studi Ilmu Kehutanan, Fakultas Pertanian Unsrat Manado, 95115 ABSTRACTThe availability of nutrient inputs for soil fertility in forests is very important to preserve in an effort to anticipate a decrease in land productivity. Litter decomposition is a process of destruction of organic matter (litter) into nutrients available in the soil. This study aims to determine and compare the rate of decomposition of Palaqium obovatum, Spathodea campanulata, and Calophyllum soulattri litter in Bron Warembungan Forest, Minahasa Regency. This study was carried out on the leaf litter of Palaqium obovatum, Spathodea campanulata, and Calophyllum soulattri. The method of decomposition rate data collection using 36 litter bags placed randomly (with experiments using a completely randomized design (CRD) with two factors namely tree type and duration of decomposition) on the forest floor taken every week for four weeks, followed simultaneously with temperature measurements and humidity. The results showed that of the three main tree species in Bron Forest, the highest decomposition rate was shown by leaf litter of Spathodea campanulata with an average of 15.49% per week, followed by Palaquium obovatum (11.74% per week) and then Calophyllum soulattri ( 3.07% per week). The decomposition process in the three leaf litter took place very quickly in the first week which can also be associated with the results of measurements of water content in litter. ABSTRAKKetersediaan masukan hara bagi kesuburan tanah di hutan sangat penting dijaga kelestariannya dalam upaya mengantisipasi terjadinya penurunan produktivitas lahan. Dekomposisi serasah merupakan suatu proses penghancuran bahan organik (serasah) menjadi unsur-unsur hara yang tersedia di tanah. Penelitian ini bertujuan untuk mengetahui serta membandingkan laju dekomposisi serasah pohon Palaqium obovatum, Spathodea campanulata, dan Calophyllum soulattri di Hutan Bron Warembungan, Kabupaten Minahasa. Penelitian ini dilakukan pada serasah daun Palaqium obovatum, Spathodea campanulata, dan Calophyllum soulattri. Metode pengumpulan data laju dekomposisi menggunakan 36 kantong serasah yang diletakkan secara acak (dengan percobaan menggunakan rancangan acak lengkap (RAL) dengan dua faktor yaitu jenis pohon dan durasi dekomposisi) di lantai hutan diambil setiap minggu sekali selama empat minggu, diikuti serentak dengan pengukuran suhu dan kelembaban. Hasil penelitian menunjukkan bahwa dari ketiga jenis pohon utama di Hutan Bron, laju dekomposisi tertinggi ditunjukkan oleh serasah daun Spathodea campanulata dengan rata-rata 15,49% per minggu, diikuti oleh Palaquium obovatum (11,74% per minggu) dan selanjutnya Calophyllum soulattri (3,07% per minggu). Proses dekomposisi pada ketiga serasah daun tersebut berlangsung sangat cepat pada minggu pertama yang dapat pula dikaitkan dengan hasil pengukuran kandungan air pada serasah. Kata kunci: hutan hujan tropis, dekomposisi serasah, serasah daun...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.