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Alhamd, Laode
Research Center for Biology-Indonesian Institute of Sciences
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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KEANEKARAGAMAN JENIS POHON DI KAWASAN CAGAR ALAM DUNGUS IWUL, JASINGA, BOGOR [Tree Biodiversity in Dungus Iwul Nature Reserve, Jasinga, Bogor] Polosakan, Ruddy; Alhamd, Laode
BERITA BIOLOGI Vol 16, No 2 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3681.992 KB) | DOI: 10.14203/beritabiologi.v16i2.2648

Abstract

Dungus Iwul Nature Reserve is one of the remaining conservation areas in Java and has an unique vegetation. Study on tree biodiversity was carried out in one hectare permanent plot. The results showed that there were 78 species of 35 families and 63 genera with 1219 trees per hectare. The species of Orania sylvicola was very dominating the region, with high distribution (Frequency = 100%) and the total basal area (basal area relative; BA = 50.96%). Species of O. sylvicola (Important Value; IV = 129.48%) highly covered the area, followed by Mischocarpus sundaicus (IV = 19.93%), Diospyros frutescens (IV = 9.67%), Ficus variegata (IV = 9.38%) and Knema laurina (IV = 8.51%). Family with largest number of species was Euphorbiaceae (11 species), followed by Lauraceae (7 species) and 4 species of Fabaceae, Meliaceae and Rubiaceae.
ESTIMASI BIOMASA DAN KARBON TERSIMPAN PADA Pinus merkusii Jungh. & de Vriese DI HUTAN PINUS GN. BUNDER, TN. GN. HALIMUN SALAK [Biomass Estimation and Carbon Stock on Pinus merkusii Jungh. & de Vriese In Pine Forest At Bunder Mount, Gunung Halimun Salak National Park] Polosakan, Ruddy; Alhamd, Laode; Rahajoe, Joeni S.
BERITA BIOLOGI Vol 13, No 2 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.481 KB) | DOI: 10.14203/beritabiologi.v13i2.684

Abstract

A study on the biomass and carbon stock estimation of Pinus merkusii Jungh. & de Vriese plantation has been conducted on 17-years and 30-years old pine forest in Gunung Bunder, Halimun Salak National Park. The method used was the allometric with non destructive technique. The results showed that pine trees density of 30-years old pine was 542 trees ha-1 ; the basal area (BA) was 26.8 m2 ha-1; trees density of 17-years old pine was 1,398 tree ha-1 with BA was 36.2 m2 ha-1. The estimation of biomass, carbon sinks and CO2 sequestration of 30-years old pine were 203.7, 96.5 and 354.2 ton ha-1, respectively. Meanwhile, the estimation of biomass, carbon sinks and CO2 sequestration of 17-years old pine were 188.3, 86.8 and 318.5 ton ha-1, respectively. Value of the environmental services derived from the CO2 absorption for the development of a pine forest ranged from US.$ 1,847.09 to 2,054.22, at two ages of pine trees.
STATUS HARA DIHUTAN GEWANG (Corypha utan Lamk.), DESA USAPISONBAI, KUPANG, NUSATENGGARA TIMUR Alhamd, Laode; Partomihardjo, T; Naiola, BP
BERITA BIOLOGI Vol 9, No 5 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/bb.v9i5.2000

Abstract

Gewang or Corypha utan Lamk. is tree that support the daily need in Usapisonbai village, Nekamese District, Kupang, Nusa Tenggara Timur The nutrient content of the tree is important to be observed, since the tree is crucial to be sustainable.Three permanent plots were established and random sampling was conducted. The results showed that characteristics of soil are clay in texture, somewhat alkaline, mid in C/N ratio, and high CEC (cation exchange capacity) for calcium, magnesium dan potassium.Nutrient contents of soil were 0.15, 0.002, 0.04, 1.16 and 0.04%, respectively, for N, P, K, Ca and Mg. Litter contribution was dominated by leaves (7.73 t ha-), and other parts reached 6.7 t ha , with their nutrient content of N (0.72), P (0.09), K (0.18),Ca (2.S4) and Mg (0.27%). The significant, differences of nitrogen between nutrient contents and between total nutrient contents through litters (P < 0.05) were found. The nutrient contents of tree are 0.57 N, 0.4, P, 0.75 K, 0.77 Ca and 0.18% Mg. The increase of the tree nutrient could be done by utilizing organic matter or by planting tree species that can increase soil fertility and survive in savanna.
Co-Authors Naiola, BP Rahajoe, Joeni S. Ruddy Polosakan, Ruddy T Partomihardjo