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KANDUNGAN KARBON DI HUTAN RAWA GAMBUT KAWASAN KONSERVASI PT NATIONAL SAGO PRIMA, KEPULAUAN MERANTI, RIAU Rosalina, Yusi; Kartawinata, Kuswata; Nisyawati, Nisyawati; Nurdin, Erwin; Supriatna, Jatna
Buletin Kebun Raya Vol 16, No 2 (2013): Buletin Kebun Raya Vol. 16 (2) Juli 2013
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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This study was conducted to collect information regarding carbon storage, particularly the carbon stored in the aboveground biomass as well as in the peat soil. The study site was in a conservation area of the PT National Sago Prima belonging to the PT Sampoerna Agro Tbk. Group. The work was undertaken in January-February 2012. The total aboveground biomass and carbon storage in the research site indicates Â that the conservation area is a secondary peat swamp forest, with the biomass of 149.18 ton/ha and carbon stock of 70.12 ton C/ha. The aboveground biomass and carbon consisted of biomass and carbon of tree (83.97 ton/ha containing 39.47 ton C/ha, respectively), saplings (20.69 ton/ha containing 9.72 ton C/ha) and seedlings and undergrowth plants (0.03 ton/ha containing 0.01 ton C/ha), wood Â necromass (24.06 ton/ha containing 11.31 ton C/ha), and litter (20.44 ton/ha containing 9.61 ton C/ha). An allometric equation was developed for Pandanus atrocarpus Griff. providing an estimated total biomass and carbon of 5.16 ton/ha containing 2.42 ton C/ha. The underground C with the mean peat depth of 5.5 m, mean bulk density ofÂ 0.18 g/cm3, and the mean organic C of 46.6 % was 464.895,94 ton C/ha. In the entire conservation forest area of 541 ha the total aboveground biomassa and carbon storage was estimated to beÂ 80,708.64 ton and 37,934.00 ton C, while the total underground carbon was 238,96 million MT C.

KANDUNGAN KARBON DI HUTAN RAWA GAMBUT KAWASAN KONSERVASI PT NATIONAL SAGO PRIMA, KEPULAUAN MERANTI, RIAU Rosalina, Yusi; Kartawinata, Kuswata; Nisyawati, Nisyawati; Nurdin, Erwin; Supriatna, Jatna
Buletin Kebun Raya Vol 16, No 2 (2013): Buletin Kebun Raya Vol. 16 (2) July 2013
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar

This study was conducted to collect information regarding carbon storage, particularly the carbon stored in the aboveground biomass as well as in the peat soil. The study site was in a conservation area of the PT National Sago Prima belonging to the PT Sampoerna Agro Tbk. Group. The work was undertaken in January-February 2012. The total aboveground biomass and carbon storage in the research site indicates Â that the conservation area is a secondary peat swamp forest, with the biomass of 149.18 ton/ha and carbon stock of 70.12 ton C/ha. The aboveground biomass and carbon consisted of biomass and carbon of tree (83.97 ton/ha containing 39.47 ton C/ha, respectively), saplings (20.69 ton/ha containing 9.72 ton C/ha) and seedlings and undergrowth plants (0.03 ton/ha containing 0.01 ton C/ha), wood Â necromass (24.06 ton/ha containing 11.31 ton C/ha), and litter (20.44 ton/ha containing 9.61 ton C/ha). An allometric equation was developed for Pandanus atrocarpus Griff. providing an estimated total biomass and carbon of 5.16 ton/ha containing 2.42 ton C/ha. The underground C with the mean peat depth of 5.5 m, mean bulk density ofÂ 0.18 g/cm3, and the mean organic C of 46.6 % was 464.895,94 ton C/ha. In the entire conservation forest area of 541 ha the total aboveground biomassa and carbon storage was estimated to beÂ 80,708.64 ton and 37,934.00 ton C, while the total underground carbon was 238,96 million MT C.

FLORISTIC COMPOSITION AND STRUCTURE OF SUBALPINE SUMMIT HABITATS ON MT. GEDE-PANGRANGO COMPLEX, CIBODAS BIOSPHERE RESERVE, WEST JAVA, INDONESIA Sadili, Asep; Kartawinata, Kuswata; Kartonegoro, Abdulrokhman; Soedjito, Herwarsono; Sumadijaya, Alex
REINWARDTIA Vol 12, No 5 (2009): Vol. 12, No. 5
Publisher : Research Center for Biology

SADILI, A., KARTAWINATA, K., KARTONEGORO, A., SOEDJITO, H. & SUMADIJAYA, A. 2009. Structure and composition of subalpine summit habitats on Mt. Gede-Pangrango complex, Cibodas Biosphere Reserve, West Java, Indonesia. ReinwardtiaÂ Â 12 (5): 391â404.Â We undertook a phytosociological analysis of the subalpine herbaceous and shrubby vegetation at the Mandalawangi and Suryakencana meadows and the scrub at the Crater Side at the tops of Mt. Gede and Mt. Pangrango in the Cibodas Biosphere Reserve. We recorded 30 species of 18 families of saplings, shrubs, seedlings and herbs in 78 quadrats with a total area of 7,800 m2. Anaphalis javanica, a woody tall herb and long-lived pioneer was the dominant species in the sapling and shrub stratum, while Isachne pangerangensis, Tripogon exiguus and Carex verticillata were prevalent in the seedling and herb stratum at Mandalawangi and Suryakencana. Stunted shrub is Vaccinium varingaeifolium, dominant in the Crater Side scrub. Based on the importance values, the Mandalawangi meadow may be designated as the Anaphalis javanica-Isachne pangerangensis community type, the Suryakencana meadow as Anaphalis javanica-Tripogon exiguus community type and the Crater Side scrub as Vaccinium varingiaefolium-Seliguea feei community type. The similarity indices between Mandalawangi and Suryakencana community types were very high (>75 %) while those between the Crater Side and Mandalawangi and the Crater Side and Suryakencana were very low (<10 %). Poor soil conditions and fire seem responsible for the perpetual existence of A. javanica.

A NOTE ON A KERANGAS (HEATH) FOREST AT SEBULU, EAST KALIMANTAN*) KARTAWINATA, KUSWATA
REINWARDTIA Vol 9, No 4 (1980): vol.9 no.4
Publisher : Research Center for Biology

Kerangas (heath) forest, that forms islands within the lowland dipterocarp forest, occurred at Sebulu, East Kalimantan. Part of the two of the islands and the transition area between them were investigated. Phytosociologically three communities could be identified, i.e. the Cratoxylum glaucum-Dactylocladus stenostachys, Eugenia palembanica-Ilex hypoglauca, and Shorea ovalis-Eugenia acuminatissima communities. They occurred on sandstone flat, sandstone slope and swampy depression respectively. Only Cratoxylum glaucum-Dactylocladus stenostachys community can be considered kerangas forest proper, whereas the Eugenia palembanica-Ilex hypoglauca community the transition and the Shorea ovalis-Eugenia acuminatissima community a variant of the lowland dipterocarp forest. The soils under these communities were peaty, very acid and low in nutrient contents. The economic value of kerangas forest in terms of timber is very low, hence, it would be better to preserve all kerangas forest as conservation areas and utilize them for research, educational and recreational purposes.

An undescribed lowland natural forest at Bodogol, Gunung Gede Pangrango National Park, Cibodas Biosphere Reserve, West Java, Indonesia Helmi, Nelva; Kartawinata, Kuswata; Samsoedin, Ismayadi
REINWARDTIA Vol 13, No 1 (2009): Vol. 13 No. 1
Publisher : Research Center for Biology

An analysis of the structure and floristic composition of trees with diameters at breast height ? 10 cm in a one- hectare plot in a lowland natural forest at the elevation of 800 m at Bodogol, the Gunung Gede Pangrango National Park, Cibodas Biosphere Reserve, recorded 70 spesies and 30 families with a density of 350 trees/hectare and a total basal area of 23.36 m2. As high as 37 tree spesies (52.86 %) were not recorded in the flora of Mt.Gede Pangrango; they were species of upper lowland forest and dominated the plot. Among 10 main species, only Altingia excelsa and Ficus ribes are montane forest species. Thus the forest plot represents a transition between lowland forest and lower montane forest, which may be called an upper lowland forest. This is a new phenomenon which has not been recorded previ- ously at the Gunung Gede Pangrango National Park. The most prominent species with Importance Value (VI) > 10 % are Schima wallichii, Pternandra caerulescens, Neesia altissima, Luvunga sarmentosa and Maesopsis eminii; the latter is an exotic species invading the natural forest. Dipterocarpus hasseltii is present in the area.

A TREE SPECIES INVENTORY IN A ONE-HECTARE PLOT AT THE BATANG GADIS NATIONAL PARK, NORTH SUMATRA, INDONESIA Kartawinata, Kuswata; Samsoedin, Ismayadi; Heriyanto, M; Afriastini, JJ
REINWARDTIA Vol 12, No 2 (2004): Vol. 12, No. 2
Publisher : Research Center for Biology

KARTAWINATA, KUSWATA; SAMSOEDIN, ISMAYADI; HERIYANTO, M. AND AFRIASTINI, J. J. 2004. A tree species inventory in a one-hectare plot at the Batang Gadis National Park, North Sumatra, Indonesia. Reinwardtia 12 (2): 145 â 157. The results of the inventory of trees with DBH = 10 cm shows that 184 species in 41 families, represented by 583 individuals with the total basal areas of 40.56 mÂ² occurred in the one-hectare plot sampled. Together with the saplings and shrubs the number of species was 240 belonging to 47 families. The forest is richer in tree species than other lowland forests in North Sumatra, but poorer than those in Borneo and the Malay Peninsula. Dipterocarps constituted 18.42 % of total species with basal area of 18.99 mÂ² or 46.82 % of the total basal area in the plot. The most prominent species was Shorea gibbosa. Hopea nigra, reported to be rare in Bangka and Belitung, occurred here as one of the ten leading species. The species-area curve shows that a considerable number of additional species was encountered more or less steadily up to one hectare and there was no indication of levelling off. A simulated profile diagram shows the forest may be stratified into five layers: (1) emergent layer, (2) upper canopy, (3) middle canopy, (4) lower canopy and (5) ground canopy. Dipterocarps were leading species in the emergent layer, upper canopy and middle canopy. Only 82 species were regenerating as represented by their presence in the sapling stage ranging from 5 to 50 plants/hectare. Macaranga lowii King ex Hook. f. dominated the section which seemed to be previously occupied by gaps.

CHYDENANTHUS MIERS (LECYTHIDACEAE) Kartawinata, Kuswata
REINWARDTIA Vol 10, No 1 (1982): vol. 10 No.1
Publisher : Research Center for Biology

Chydenanthus is accepted as a monotypic genus and its type species C. excelsus (Bl.) Miers is redescribed. C. dentato-serratus R. Knuth belongs to Barringtonia and is thus excluded from the genus.

ADDITIONAL NOTES ON PLANCHONIA BREVISTIPITATA KUSW. (LECYTHIDACEAE) KARTAWINATA, KUSWATA
REINWARDTIA Vol 11, No 3 (1998): Vol. 11 No. 3
Publisher : Research Center for Biology

Planchonia brevistipitata Kusw. is re-described and Barringtonia belagaensis P. Ghantaranothai is reduced to a synonym of this species.

Morphology vs. taxonomy in the family Pandanaceae: a case study in the Javanese species Rahayu, Sri Endarti; Chikmawati, Tatik; Kartawinata, Kuswata; Hartana, Alex
REINWARDTIA Vol 13, No 4 (2012): Vol. 13 no. 4
Publisher : Research Center for Biology

Since a large number of characters are now known for Freycinetia Gaudich. and Pandanus Parkinson species, it appears useful to consider their use in identifying plants from Java. Fieldwork carried out for this study has provided stronger foundation for understanding morphological variation within the species. This study was undertaken to have a better understanding on the morphology of the family in order to make a better species delimitation. Characters of habit, stem, leaves, auricles, bracts, peduncle and pedicel, inflorescence, staminate flowers (male), pistillate flowers (female), cephalia and berries were found useful in delimitation and identification of Javanese Freycinetia, while characters of habit, stem, prop root, marginal spine, leaves, bracts, inflorescentia, peduncle, staminate flowers (male), pistillate flowers (female), cephalia, drupes were found to be useful for distinguishing among species of Javanese Pandanus.Â

FLORISTIC COMPOSITION AND STRUCTURE OF A PEAT SWAMP FOREST IN THE CONSERVATION AREA OF THE PT NATIONAL SAGO PRIMA, SELAT PANJANG, RIAU, INDONESIA Rosalina, Yusi; Kartawinata, Kuswata; Nisyawati, Nisyawati; Nurdin, Erwin; Supriatna, Jatna
REINWARDTIA Vol 14, No 1 (2014): Vol. 14 No. 1
Publisher : Research Center for Biology

We studied the floristic composition and structure of the logged-over peat swamp forest in theÂ PT National Sago Prima of PT Sampoerna Agro Tbk. group for future management of the conservation area that has beenÂ set aside by the company.Â In January - February 2012, 25 quadrats of 20 m x 20 m were laid out systematically along a transect,Â thus covering a sampled area of 1-ha.Â The results showed that the study site was a regenerating and developing secondary peat swamp forests having high plant species richness.Â The total number of species recorded was 73 species of 38 families, consisting of 49 species (30 families) of trees (DBH? 10 cm ), 42 species (24 families) of saplings (H > 1.5 m and DBH < 10 cm), and 41 species (27 families) of seedlings and undergrowth.Â Tree density was 550 individuals/ha, and total tree basal area was 18.32 m2. The Shannon-Wienerâs Diversity Index for trees was highÂ (3.05)Â Two tree species with the highest Importance Values (IV) were Pandanus atrocarpus (IV= 45.86 %) and Blumeodendron subrotundifolium (22.46Â %).Â The tree families with the highest IV were Pandanaceae (45.86), Myrtaceae (40.37), and Dipterocarpaceae (39.20). Forest structure dominated by trees with a diameter below 20 cm amounting to 408 trees/ha (74.05%). andÂ D and E strata with height of less than 20 m, and density of 431 trees/ha (78.36%). Jaccard Similarity index among species, showedÂ strong association between Pandanus atrocarpus and Blumeodendron subrotundifoliumÂ and based on this association combinedÂ with high IVs, the two parameters of speciesÂ characterized the forest, hence the forest could be designated as the Pandanus atrocarpus--Blumeodendron subrotundifolium association. Primary forest species with high economic values were still present in the forest. Eleven species can be included in the IUCN Red List, of which Shorea rugosa is in the category of Critically Endangered), Shorea tesymanniana Endangered and Â Gonystylus bancanus vulnerable, hence they shouldÂ be protected.

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