Judul: Pendugaan Cadangan Karbon dan Serapan CO2 pada Tegakan Taman Hutan Kota Muhammad Sabki di Provinsi Jambi
Abstrak: Hutan memiliki peran penting dalam mitigasi perubahan iklim dan pemanasan global. Hutan menyerap CO2 kemudian menyimpannya dalam bentuk cadangan karbon. Penelitian ini bertujuan untuk mengestimasi kerapatan tegakan, biomassa, cadangan karbon dan serapan CO2 di Taman Hutan Kota Muhammad Sabki (THKMS), Jambi. Parameter tegakan THKMS (yaitu, jenis pohon, diameter, dan tinggi total) diukur dengan membuat 42 petak contoh lingkaran (masing-masing berukuran 0,04 ha) secara sistematis dengan jarak 38 × 38 m. Pendugaan nilai dugaan tegakan dilakukan dengan menggunakan metode stratifikasi dan tanpa stratifikasi berdasarkan zona penggunaan lahan untuk wisata. Hasil penelitian menunjukkan bahwa pendugaan dengan stratifikasi menghasilkan sampling error (SE) yang lebih kecil. Rata-rata jumlah pohon, lbds, biomassa, cadangan karbon, serapan CO2 tegakan THKMS adalah 706 pohon/ha, 21,65 m2/ha, 145,87 ton/ha, 68,56 ton/ha dan 249,04 ton/ha dengan total 706 pohon. pohon/ha, 21,65 m2/ha, 145,87 ton/ha, 68,56 ton/ha dan 249,04 ton/ha., Forest has an important role in the mitigation of climate change and global warming. Forest absorbs CO2 then store it in a form of carbon stock. This study aimed to estimate stand density, biomass, carbon stock and CO2 sequestration in Muhammad Sabki Urban Forest Park (MSUFP), Jambi. The MSUFP stand attributes (i.e., tree species, diameter, and total height) were measured by establishing 42 circular sample plots (each measuring 0.04 ha) in a systematic way with a distance of 38 × 38 m. The estimation of stand attributes was conducted by using stratification and without stratification method based on a land usage zone for tourism. The results showed that the estimation with stratification resulted in a smaller sampling error (SE). The average number of trees, basal area, biomass, carbon stock, CO2 absorption of the MSUFP stands were 706 trees/ha, 21.65 m2/ha, 145.87 tons/ha, 68.56 tons/ha and 249.04 tons/ha with a total of 706 trees/ha, 21.65 m2/ha, 145.87 tons/ha, 68.56 tons/ha and 249.04 tons/ha, respectively.
Keyword: kerapatan tegakan, biomassa, karbon, karbon dioksida, THKMS

Judul: Pendugaan Cadangan Karbon pada Lahan Revegetasi di PT.  Pesona Khatulistiwa Nusantara, Kabupaten Bulungan,  Kalimantan Utara.
Abstrak: Perubahan iklim disebabkan oleh meningkatnya gas rumah kaca (GRK) yang ada di atmosfer, utamanya gas karbon dioksida (CO2). Peningkatan ini dikarenakan banyaknya deforestasi dan degradasi hutan, salah satunya kegiatan pertambangan batubara dengan sistem terbuka. Pertambangan tidak akan berdampak buruk jika dilakukan revegetasi yang dapat berperan dalam upaya peningkatan penyerapan CO2. Dalam hal ini pemantauan cadangan karbon perlu dilakukan secara reguler. Penelitian ini bertujuan untuk menduga total cadangan karbon dan menganalisis kontribusi kerapatan pohon, luas bidang dasar, dan H’ terhadap cadangan karbon di lahan revegetasi pascatambang batubara PT. Pesona Khatulistiwa Nusantara. Metode yang digunakan yaitu stratified systematic sampling with random start dengan menggunakan plot lingkaran sebesar 17,84 m. Analisis yang digunakan pada penelitian ini antara lain indeks nilai penting, H’, dan dilakukan uji-t Student serta analisis korelasi pada perangkat lunak R studio. Pendugaan total cadangan karbon (t C/ha) pada lahan revegetasi berdasarkan tahun tanam 2013 sampai 2019 berkisar antara 41,02 t C/ha hingga 151,88 t C/ha. Hasil uji korelasi Pearson antara kerapatan pohon dan total cadangan karbon sebesar 0,851, dan uji korelasi Pearson antara luas bidang dasar dan total cadangan karbon sebesar 0,790., Climate change is caused by increased greenhouse gases (GHGs) in the atmosphere, mainly carbon dioxide (CO2). This increase is due to the large amount of deforestation and forest degradation, including coal mining with an open pit mining system. Mining will not have a bad impact if revegetation is carried out properly. Revegetation plays an important role in efforts to increase carbon stock and sequestration. However, regular monitoring of carbon stock and equestration is necessary. This study aimed to estimate the total carbon stock and analysed the contribution of tree density, basal area, and H’ to carbon stock in revegetation land after coal mining of PT. Pesona Khatulistiwa Nusantara. The method used was stratified systematic sampling with random start using a circle plot of 17.84 m. The analyses used in this study included the following parameters: importance value index and H’, while Student's t-test and correlation analysis were conducted on R studio software. Estimates of total carbon stocks (t C/ha) on revegetation land based on planting years 2013 to 2019 ranged from 41.02 t C/ha to 151.88 t C/ha. The result of Pearson correlation test between tree density and total carbon stock was 0.851, and Pearson correlation test between basal area and total carbon stock was 0.790.
Keyword: Analisis vegetasi, biomassa, karbon.

Judul: Studi Kasus Liver Neoplasia pada Anjing Shih Tzu
Abstrak: Liver neoplasia is the excessive and uncontrolled replication of hepatocytes that forms nodules visible in ultrasonography. The purpose of this study is to study and discuss the characteristic, diagnosis and treatment of liver neoplasm through the interpretation of ultrasonography and hematology in a Shih Tzu dog. Ultrasonography is conducted with a Chison Q8 ultrasound machine with a 5 to 7 MHz frequency convex probe on lateral recumbency. The blood cells, liver enzymes and nodules sizes were the main parameters in this study. The results in the period of three years from 2021 to 2023 were interpreted and supported with secondary data sources. The Shih Tzu dog is 14 years old in the year 2023 with a body weight of 5.21kg. No obvious clinical signs were observed during previous examinations. However, lethargy, vomiting and anorexia were recorded in its latest examination. Thrombocytosis, granulocytosis, high liver enzymes and hypoglycemia, which are some of the neoplastic clinical manifestations were also presented by this patient. Besides, liver neoplasm, spleen neoplasm and biliary sludge were the sonogram findings of this patient. The liver and spleen neoplasm was observed stable, while the biliary sludge volume fluctuated. The treatment strategy recorded is Ondansetron, Samylin®, Ornipural and Ursodeoxycholic acid.
Keyword: Blood biochemistry profile, Hematology, Liver Neoplasia, Shih Tzu, Ultrasonography