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PHYSIOLOGICAL CHARACTERISTICS RELATED TO CARBON SEQUESTRATION OF TREE SPECIES IN HIGHLAND FOREST ECOSYSTEM OF MOUNT HALIMUN-SALAK NATIONAL PARK Hidayati, Nuril; Mansur, M.; Juhaeti, Titi
Indonesian Journal of Forestry Research Vol 9, No 2 (2012): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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

Abstract

Biological diversity can have significant contribution to reduce the build-up of greenhouse gases in the atmosphere. The trees in a forest stand form an essential part in the functioning of the terrestrial biosphere, especially in the carbon cycle. Yet tree photosynthesis is far less studied than crop photosynthesis for several reasons: the large number of species; difficulty in measuring photosynthesis of entire trees or of forest stands. This research aims to assess the contribution of biological diversity in carbon sequestration by analyzing the physiological characteristics (photosynthesis, transpiration, stomatal conductance, leaf chlorophyll content) of species native to tropical highland forest ecosystem of Mount Halimun-Salak National Park. The results showed that there was a wide range of variation of CO2 assimilation rate between tree species. The overall CO2 absorption rate ranged 1.1913 - 31.3875 µmolm-2 s-1, the highest rate was reached by Lithocarpus sp. (pasang parengpeng) (31.3875 µmolm-2 s-1)followed by Litsea noronhae(huru lumlum) (21.5750 µmolm-2 s-1), Saurauia nudiflora (kilebo) (11.8175 µmolm-2 s-1), Vernonia arborea (hamirung) (6.7125 µmolm-2 s-1) and Litsea.sp. (huru bodas) (6.2725 µmolm2 s-1). The rate of CO assimilation was affected by incident radiation and thus the photon flux (Q leaf). Correlation between CO assimilation and Q leaf under certain environmental condition was considerably high. Incident radiation and Q leaf also affected stomatal conductance and thus rate of transpiration.
JALI (COIX LACRYMA-JOBI L.; POACEAE) UNTUK DIVERSIFIKASI PANGAN: PRODUKTIVITAS PADA BERBAGAI TARAF PEMUPUKAN Juhaeti, Titi
BERITA BIOLOGI Vol 14, No 2 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i2.1850

Abstract

Jali (Coix lacryma-jobi L.; Poaceae) is a potential cereal for food diversification especially as carbohydrate source. The aim of this current research was to study the productivity of jali cultivated under various doses of fertilizer. Jali were planted on polybag (30x40 cm) with mix-ture of soil:compost=2:1 as planting media. Fertilizer treatments were A) 0-0-0; B) 2-1-1; C) 2,5-1,5-1,5; D) 3-2-2-; E) 3,5-2,5-2,5 and F) 4-3-3 gram urea:SP36:KCl (gr/polybag). The experiment used randomized block design with 9 replications. Result indicated that on 13 WAP (Week After Planting) the highest plant height achieved on 2,5-1,5-1,5 treatment (198,44 cm), leaf number on 4-3-3 treatment (65,44), tiller number on 4-3-3- treatment (4,22), and branch number on 2,5-1,5-1,5 treatment (5,89). These measurements were significantly different from control but not with the other fertilization treatments. On harvesting time of 6 MAP ( Months After Planting) the highest number of seed/plant was from treatment 4-3-3 (792,6) followed by treatment 2-1-1 treatment (672,5). The result of this study suggested that 2-1-1 gram Urea:SP36:KCl (gr/polybag) treatment was the best in increasing hanjeli productivity.
VARIASI SERAPAN KARBONDIOKSIDA (CO2) JENIS-JENIS POHON DI “ECOPARK”, CIBINONG DAN KAITANNYA DENGAN POTENSI MITIGASI GAS RUMAH KACA Hidayati, Nuril; Mansur, M.; Juhaeti, Titi
Buletin Kebun Raya Vol 16, No 1 (2013): Buletin Kebun Raya Vol. 16 (1) Januari 2013
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Abstract

This research aims to assess the contribution of biological diversity in CO2 absorption by analyzing the physiological characteristics (CO2 absorption, transpiration, stomatal conductance, leaf chlorophyll content) of tree species in a conservation area of “Ecopark”, Cibinong. The results were meant to provide information on CO2 absorption of some tree species suitable for revegetation. The results showed that there was a wide range of variation of CO2 assimilation rate among tree species. The overall CO2 assimilation rate ranged from 2.86 to 16.45  µmolm-2s-1. The highest CO2 absorption was Pometia pinnata (16.45  molm-2s-1), followed by Garcinia xanthochymus (11.40 µmolm-2s-1), Syzygium polyanthum (10.99 µmolm-2s-1), Syzygium polycepaliodes (10.89 µmolm-2s-1), and Palaquium obtusifolium (10.41 µmolm-2s-1). Transpiration rate was recorded between  1.29 mmolm-2s-1 (Maniltoa grandiflora)  and 7.85 mmolm-2s-1 (Euphoria longan). The rate of CO2 assimilation was affected by solar radiation and thus the quantum leaf (Q leaf), stomatal conductance, as well as leaf chlorophyll content. Trees species that have characteristics of high CO2 absortion and efficient in maintaining water balance (low transpiration rate), are suitable for green house gas mitigation.  
PEMANFAATAN SALVINIA MOLESTA D.S. MITCHELL, AKUMULATOR MERKURI DI SAWAH TERCEMAR LIMBAH PENAMBANGAN EMAS Hidayati, Nuril; Syarif, Fauzia; Juhaeti, Titi
Jurnal Teknologi Lingkungan Vol. 10 No. 3 (2009)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (113.693 KB) | DOI: 10.29122/jtl.v10i3.1470

Abstract

Mercury is one of important contaminants in mine lands. One approach to remediaterisks from this metal pollutant is phytoextraction using hyperaccumulator plants. Theseremarkable plant species accumulate appreciable high concentrations of metals thando normal plants when the normal plants suffer yield reduction from metal phytotoxicity.Some plant species growing in gold mine contaminated areas indicated high toleranceand potentially effective in accumulating mercury in their roots and above groundportions. Salvinia molesta is one of them. This plant could be utilized as hyperaccumulatorfor cleaning up mercury contaminated sites. This research aim to study phytoextractionof mercury by Salvinia molesta and the effectiveness of mercury degradator bacteria onplant tolerance and mercury phytoextraction. In this study Salvinia molesta was grown inmercury contaminated liquid gold mine waste, added with Mercury (II) Chloride (HgCl2)0 ppm Hg, 10 ppm Hg, 30 ppm Hg and 50 ppm Hg. Mercury degradator bacteria wasapplied in the media. The results showed that Salvinia molesta was able to survive evenin media with high level of mercury concentration (50 ppm), although the number ofplant survival tend to decrease with the increase of mercury concentration. Variables ofsurface coverage and live plants decreased with the increase of mercury concentrationin the media. There was a close correlation between plant growth variables and mercuryconcentration in the media. The effects of mercury toxicity on plants seems to decreasein bacteria treated plants. It was indicated by the higher percentage of surface coverageand plant survival in bacteria treated plants than that of untreated plants up to 30 ppm Hg.Recovery from toxicity was shown in bacteria treated plants up to 30 ppm Hg. Mercuryaccumulation in plants tent to increase with the increase of mercury concentration inmedia. It can be concluded that plant performance was better and mercury concentrationdecreased in bacteria treated plants.
POTENSI SALVINIA MOLESTA D.S. MITCHELL, LIMNOCHARIS FLAVA (L.) BUCHENAU DAN MONOCHORIA VAGINALIS (BURM.F.) PRESL UNTUK FITOEKSTRAKSI MERKURI DI SAWAH YANG TERCEMAR MERKURI AKIBAT KEGIATAN PENAMBANG EMAS TANPA IZIN (PETI) Juhaeti, Titi; Hidayati, Nuril; Syarif, Fauzia; Hidayat, Syamsul
Jurnal Teknologi Lingkungan Vol. 11 No. 2 (2010)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.403 KB) | DOI: 10.29122/jtl.v11i2.1203

Abstract

The research were carried out to study the potency of Salvinia molesta D.S. Mitchell (Kiambang), Limnocharis flava (L.) Buchenau (Genjer) and Monochoria vaginalis (Burm.f.) Presl (Eceng) for Hg phytoextraction on paddy field contaminated with Hg from illegal mining. The plants were grown on contaminated media from paddy field in Pongkor (68.269 ppm Hg) added by NPK fertilizer (0, 3 and 6 g/pot) and ammonium thiosulphate chelating agent (0, 20 ppm). The result showed that the growth of kiambang,eceng, genjer and padi are significantly different. Chelating agent did not significantly affect the plant growth, meanwhile fertilizer significantly affected the plant growth. Thetreatments resulted in different Hg concentration in the plants. Fertilizer increased plant biomass and so plant Hg content since Hg contents is a function of total biomass and Hg concentration. It can be concluded that based on the criteria of accumulator plant,kiambang is the most potentially Hg accumulator followed by genjer and eceng.Key words: Phytoextraction, Hg, Salvinia molesta, Limnocharis flava, Monochoriavaginalis
PERTUMBUHAN, PRODUKSI DAN POTENSI GIZI TERONG ASAL ENGGANO PADA BERBAGAI KOMBINASI PERLAKUAN PEMUPUKAN [The growth, production and nutrition potential of Enggano eggplant on various combinations of fertilizer treatments] Juhaeti, Titi; Lestari, Peni
BERITA BIOLOGI Vol 15, No 3 (2016)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3084.907 KB) | DOI: 10.14203/beritabiologi.v15i3.2246

Abstract

This research was carried out to study growth, production and nutritional potential of two accessions of Enggano eggplant on various combinations of organic and anorganic fertilizer. The experiment was designed using to Factorial Randomized Complete Block with 5 replications. The first factor was two eggplant accessions (Meok accesion/round fruit and Malakoni accession/long finger fruit). The second factor was 9 combinations of organic and inorganic (NPK) fertilizer. The result showed that long finger eggplant more productive than rounded eggplant. The total fruit fresh weight of long finger eggplant (2383.3 g) higher than rounded eggplant (1016.4 g). The ½ NPK + ½ StarTmik fertilization treatment showed better vegetative growth than other treatments. Meanwhile, for total plant production, NPK treatment showed the highest fruit production followed by ½ NPK +½ POKomersial and ½ NPK +½ starTmik treatments.  Nutritional analysis showed that long finger eggplant contained of vitamin C 15.887 g/100g, phosphor 25.983-27.440 mg/100g; calcium 12.340-13.274 mg/100g; fat 0.120-0.277%, carbohydrate 6.244-8.315% and crude fiber 0.872-1.110%. Meanwhile, round eggplant,  contained of vitamin C 10.354 g/100g, phosphor 34.919-37.012 mg/100g; calcium 14.355-15.240 mg/100g; fat 0.275-0.338%,  carbohydrate 6.733-7.896% and crude fiber 2.005-2.211%.
VARIASI SERAPAN KARBONDIOKSIDA (CO2) JENIS-JENIS POHON DI “ECOPARK”, CIBINONG DAN KAITANNYA DENGAN POTENSI MITIGASI GAS RUMAH KACA Hidayati, Nuril; Mansur, M.; Juhaeti, Titi
Buletin Kebun Raya Vol 16, No 1 (2013): Buletin Kebun Raya Vol. 16 (1) January 2013
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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

Abstract

This research aims to assess the contribution of biological diversity in CO2 absorption by analyzing the physiological characteristics (CO2 absorption, transpiration, stomatal conductance, leaf chlorophyll content) of tree species in a conservation area of “Ecopark”, Cibinong. The results were meant to provide information on CO2 absorption of some tree species suitable for revegetation. The results showed that there was a wide range of variation of CO2 assimilation rate among tree species. The overall CO2 assimilation rate ranged from 2.86 to 16.45  µmolm-2s-1. The highest CO2 absorption was Pometia pinnata (16.45  molm-2s-1), followed by Garcinia xanthochymus (11.40 µmolm-2s-1), Syzygium polyanthum (10.99 µmolm-2s-1), Syzygium polycepaliodes (10.89 µmolm-2s-1), and Palaquium obtusifolium (10.41 µmolm-2s-1). Transpiration rate was recorded between  1.29 mmolm-2s-1 (Maniltoa grandiflora)  and 7.85 mmolm-2s-1 (Euphoria longan). The rate of CO2 assimilation was affected by solar radiation and thus the quantum leaf (Q leaf), stomatal conductance, as well as leaf chlorophyll content. Trees species that have characteristics of high CO2 absortion and efficient in maintaining water balance (low transpiration rate), are suitable for green house gas mitigation.  
STRUKTUR DAN KOMPOSISI VEGETASI POHON SERTA ESTIMASI BIOMASSA, KANDUNGAN KARBON DAN LAJU FOTOSINTESIS DI TAMAN NASIONAL GUNUNG HALIMUN-SALAK Mansur, Muhammad; Hidayati, Nuril; Juhaeti, Titi
Jurnal Teknologi Lingkungan Vol. 12 No. 2 (2011)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.014 KB) | DOI: 10.29122/jtl.v12i2.1248

Abstract

Research the structure and composition of vegetation, biomass estimation, carbon content and the rate of photosynthesis was conducted in Citalahab Central Village,Gunung Halimun-Salak National Park, West Java, on August 2010. The purpose of research to determine the components and characteristics of each tree species at the study sites associated with biomass, the rate of CO2 assimilation and transpiration. Results showed that, the form of classified forest area of primary forest with a little disturbed. There were recorded 337 individual trees (stem diameter > 10 cm) per hectare from 71 species, 50 genera and 32 families. Lauraceae, Fagaceae, Myrtaceae, Rubiaceae and Meliaceae are the 5 most common families found in the plot area, thatis dominated by Altingia excelsa, Blumeodendron elateriospermum, Ardisia zollingeri, Gordonia excelsa, Tricalysia singularis, Castanopsis acuminatissima, Knema cinerea, Laportea stimulant, Vernonia arborea and Dysoxylum excelsum. Estimated biomass recorded of 304.5 tons dry weight / ha with a carbon content of 152.3 tons / ha of basal area of 28.89 m2/ha. Quercus oidocarpa, Litsea noronhae, Saurauia nudiflora, Castanopsis argentea and Altingia excelsa has recorded the highest photosyntheticrates compared with other species. While the highest transpiration rate is owned by the Macaranga triloba, Sandoricum koetjape, Prunus arborea, Urophyllum corymbosum and Altingia excelsa.
PHYSIOLOGICAL CHARACTERISTICS RELATED TO CARBON SEQUESTRATION OF TREE SPECIES IN HIGHLAND FOREST ECOSYSTEM OF MOUNT HALIMUN-SALAK NATIONAL PARK Hidayati, Nuril; Mansur, M.; Juhaeti, Titi
Indonesian Journal of Forestry Research Vol 9, No 2 (2012): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2012.9.2.49-61

Abstract

Biological diversity can have significant contribution to reduce the build-up of greenhouse gases in the atmosphere. The trees in a forest stand form an essential part in the functioning of the terrestrial biosphere, especially in the carbon cycle. Yet tree photosynthesis is far less studied than crop photosynthesis for several reasons: the large number of species; difficulty in measuring photosynthesis of entire trees or of forest stands. This research aims to assess the contribution of biological diversity in carbon sequestration by analyzing the physiological characteristics (photosynthesis, transpiration, stomatal conductance, leaf chlorophyll content) of species native to tropical highland forest ecosystem of Mount Halimun-Salak National Park. The results showed that there was a wide range of variation of CO2 assimilation rate between tree species. The overall CO2 absorption rate ranged 1.1913 - 31.3875 µmolm-2 s-1, the highest rate was reached by Lithocarpus sp. (pasang parengpeng) (31.3875 µmolm-2 s-1)followed by Litsea noronhae(huru lumlum) (21.5750 µmolm-2 s-1), Saurauia nudiflora (kilebo) (11.8175 µmolm-2 s-1), Vernonia arborea (hamirung) (6.7125 µmolm-2 s-1) and Litsea.sp. (huru bodas) (6.2725 µmolm2 s-1). The rate of CO assimilation was affected by incident radiation and thus the photon flux (Q leaf). Correlation between CO assimilation and Q leaf under certain environmental condition was considerably high. Incident radiation and Q leaf also affected stomatal conductance and thus rate of transpiration.
POTENSI RUMPUT-RUMPUTAN UNTUK FITOREMEDIASI LAHAN TERDEGRADASI PENAMBANGAN EMAS Syarif, Fauzia; Juhaeti, Titi
BERITA BIOLOGI Vol 6, No 6 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.664 KB) | DOI: 10.14203/beritabiologi.v6i6.1206

Abstract

Phytoremediation is defined as a clean up of pollutants primarily mediated by pliotosynthetic plants so its could be used as an alternative technique to overcome contaminated soil and water such an mining ecosystems. These plants have several beneficial characteristics; they have ability to accumulate metals in their shoots and especially high tolerance to heavy metals.Since Indonesia has abundant plant diversity, it is believed that some of them are potential to be used as phytoremediator.This research was carried out to study the potential of three species of grasses in accumulating Pb and Cn. The treatments were arranged on Randomized Complete Block Design (factorial design). The first treatment are species of grass: 1) Cynodon dactylon Pers., 2)Cyperus sp. and 3) Ischaemum timorense Kith.; the second treatment is planting media i.e. 1) tailing soil, 2) soil from wildmining (mining activities run by unexpected miners) and 3) top soil and the third is organic fertilizer: 1) manure, 2) compost and 3) no fertilizer.The resultsshowed that all of the three grasses are potential to accumulate Pb and Cn. Organic fertilizer mixed on planting media is significantly affected the growth of grasses and increasing the accumulation of Cn on leaf of Cyperus sp. and I.timorense. While no evidence in increasing Pb accumulation on all of those three grasses species