Judul: Analisis Komposisi Dan Struktur Tegakan Dengan NDVI Di Taman Nasional Gunung Leuser, Provinsi Aceh
Abstrak: Gunung Leuser National Park (TNGL) has been designated as a Tropical Rainforest Heritage of Sumatra by UNESCO since 2004. It is in the category of in danger because of deforestation. Beside that baseline data on vegetation diversity and its distribution is limited. This study aims to estimate vegetation density using the Normalized Difference Vegetation Index (NDVI), to analyze the vegetation composition and structure of the vegetation at Resort Agusen, TNGL, as well as to estimate the correlation between NDVI with the number of species, the number of individuals, and base area (LBDS). The method used was remote sensing with NDVI and vegetation analysis by establishing 15 plots. Based on the NDVI analysis, there were 5 classes of vegetation density, namely class 1 (open area/very low), class 2 (low), class 3 (medium), class 4 (high), and class 5 (very high). The dominant species in class 1-3 were minter bunge(E. perfoliatum), geseng minyak (L. lucidus), and petai cina (L. leucecephala). Classes 4 and 5 were dominated by species of geseng from the Fagaceae family. The curve of class 4 and 5 densities showed an inverted J curve. NDVI and LBDS showed the highest correlation (0.82) with R2 was 64.94% and LBDS model = 0.02 NDVI + 0.15. NDVI can be used to predict LBDS values quickly and accurately.
Keyword: number of individuals, number of species, vegetation density, LBDS, TNGL

Judul: Pendugaan Kerapatan Vegetasi Menggunakan NDVI dan Stok Karbon pada Zona Inti Taman Nasional Gunung Halimun Salak
Abstrak: Forestry and Other Land Uses (FOLU) merupakan sektor penting dalam strategi pembangunan rendah karbon dan ketahanan iklim. Kawasan konservasi Taman Nasional Gunung Halimun Salak (TNGHS) berpotensi dalam mitigasi perubahan iklim melalui peningkatan stok karbon. Penelitian ini bertujuan untuk menduga kerapatan vegetasi menggunakan Normalized Difference Vegetation Index (NDVI), menduga biomassa dan cadangan karbon, serta menganalisis hubungan NDVI dengan keanekaragaman vegetasi dan cadangan karbon di zona inti TNGHS. Metode yang digunakan yaitu analisis vegetasi dan pendugaan karbon menggunakan pendekatan alometrik dan destruktif untuk strata semai dan tumbuhan bawah. Plot yang dibangun berukuran 50 m × 50 m sebanyak 14 plot. Berdasarkan hasil analisis NDVI, kelas kerapatan terbagi menjadi kelas 1 (0,72 - 0,76) dan kelas 2 (0,77 - 0,85). Komposisi vegetasi di zona pemanfaatan TNGHS terdiri atas 36 jenis tumbuhan dari 16 famili. Famili terbanyak adalah Lauraceae, Fagaceae, dan Myrtaceae. Lokasi penelitian didominasi oleh Castanopsis acuminatissima. Rata-rata biomassa dan stok karbon yang diperoleh masing-masing sebesar 268,98 ton/ha dan 126,96 ton C/ha. Stok karbon memiliki korelasi tertinggi dengan LBDS (r = 84%). Nilai NDVI memiliki korelasi tertinggi dengan kerapatan pohon per ha., Forestry and Other Land Uses (FOLU) is an important sector in low-carbon development strategies and climate resilience. The Gunung Halimun Salak National Park (TNGHS) conservation area has the potential to mitigate climate change through increasing carbon stocks. This research aims to estimate vegetation density using the Normalized Difference Vegetation Index (NDVI), estimate biomass and carbon stocks, and analyze the relationship between NDVI and vegetation diversity and carbon stocks in the core zone of TNGHS. The methods used are vegetation analysis and carbon estimation using allometric and destructive approaches for seedling and understory strata. There were 14 established with the size 50 m × 50 m. Based on the results of NDVI analysis, density classes are divided into class 1 (0.72 - 0.76) and class 2 (0.77 - 0.85). The vegetation composition in the TNGHS core zone consists of 36 plant species from 16 families. The most abundant families are Lauraceae, Fagaceae, and Myrtaceae. The research location is dominated by Castanopsis acuminatissima. The average biomass and carbon concentrations obtained were 268.98 tonnes/ha and 126.96 tonnes C/ha respectively. Carbon concentration had the highest correlation with LBDS (r = 84%). NDVI values had the highest correlation with tree density per hectare.
Keyword: carbon stock, conservation area, FOLU Net Sink, Halimun Salak

Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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