Hidayati, N.
Perhimpunan Biologi Indonesia

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Uji Potensi Tumbuhan Akumulator Merkuri untuk Fitoremediasi Lingkungan Tercemar Akibat Kegiatan Penambangan Emas Tanpa Izin (PETI) di Kampung Leuwi Bolang, Desa Bantar Karet, Kecamatan Nanggung, Bogor Juhaeti, Titi; Hidayati, N.; Syarif, F.; Hidayat, S.
JURNAL BIOLOGI INDONESIA Vol 6, No 1 (2009): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v6i1.3167

Abstract

ABSTRACTThe research were carried out in Hg contaminated paddy field in Kampung Leuwibolang,Desa Bantar Karet, Kecamatan Nanggung, Kabupaten Bogor. The aim of this research is tostudy the potency of Salvinia molesta, Oryza sativa, Monocharia vaginalis, Limnoharisflava, Paspalum conjugatum, Cyperus monocephala, Centrosema pubescens, Mikania cordataand Commelina nudiflora to accumulate Hg from contaminated soil. The treatments werefertilizer: no fertilizer (as a control), NPK, manure and compost. The result showed that thegrowth of each plant was significantly different. The fertilizer treatments were significantlyaffected plant growth. The S. molesta showed the highest biomass followed by M. vaginalis,O. sativa and C. nudiflora. Meanwhile S. molesta also showed the highest capasity toaccumulate Hg/year followed by C. nudiflora, P. conjugatum dan M. vaginalis. Production ofbiomass and accumulation capasity of contaminant were the characteristic of accumulatorplant. Based on characteristic of hyperaccumulator plant, this research suggested that S.molesta, M. vaginalis, P. conjugatum, O. sativa dan C. nudiflora were selected forfitoremediation of Hg contaminated soil.Keywords: Accumulator plant, Hg, biomass, accumulation capacityKatakunci: Tumbuhan akumulator, Hg, biomas, kapasitas akumulasi
Serapan Karbondioksida (CO2) Jenis-Jenis Pohon di Taman Buah "Mekar Sari" Bogor, Kaitannya dengan Potensi Mitigasi Gas Rumah Kaca Hidayati, N.; Reza, M.; Juhaeti, T.; Mansyur, M.
JURNAL BIOLOGI INDONESIA Vol 7, No 1 (2011): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (460.536 KB) | DOI: 10.14203/jbi.v7i1.3134

Abstract

ABSTRACTCarbondioxide (CO2) Absorption by Trees in "Mekar Sari" Fruit Garden, Bogor, in Relationto Green house Gases Mitigation. Biological diversity can make a significant contribution toreducing the build-up of greenhouse gases in the atmosphere. A biological diverse tropicalforest with a diverse plant species typically stores 50 times more carbon per unit area comparedto monoculture plantation replacing it. Thus, the trees in forests have an essential role in thefunctioning of the terrestrial biosphere, especially in the carbon cycle. Yet wild tree photosynthesesare poorly studied than crop photosynthesis for several reasons: the large number ofspecies; difficulty in measuring photosynthesis of entire trees or of forest stands. This researchaims to assess the contribution of biological diversity in CO2 absorption by analyzing thephysiological characteristics (photosynthesis, transpiration, stomatal conductance, leaf chlorophyllcontent) of tree species in "Mekar Sari" fruit garden, Bogor. The results will provideinformation on carbon sequestration of some tree species suitable for revegetation. Variance inCO2 assimilation rate is large among trees species. The results showed that there was a widerange of variation of CO2 assimilation rate between tree species. The overall CO2 assimilationrate ranged 2.33 - 13.42 ?molm-2s-1. The highest was Matoa (13.42 molm-2s-1 ) , followed byKacapi (12.50 ?molm-2s-1), Durian (11.00 ?molm-2s-1) and Nangka (11.00 ?molm-2s-1). Transpirationrate was recorded between 4.29 - 9.50 molm-2s-1. The rate of CO2 assimilation wasaffected by incident radiation and thus the quantum leaf (Q leaf) as well as leaf chlorophyllcontent. Correlation between CO2 assimilation and Q leaf under certain environmental conditionwas considerably high. Variance in stomatal conductance and transpiration rate variedamong tree species and were related to light intensity.Key words: Photosynthesis, CO2 absorption, trees