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ANALISIS SPASIAL PERUBAHAN PENGGUNAAN LAHAN DALAM KAITANNYA DENGAN PENATAAN ZONASI KAWASAN TAMAN NASIONAL GUNUNG HALIMUN-SALAK Ilyas, Muhamad; Munibah, Khursatul; Rusdiana, Omo
MAJALAH ILMIAH GLOBE Vol 16, No 1 (2014)
Publisher : Badan Informasi Geospasial

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (818.536 KB) | DOI: 10.24895/MIG.2014.16-1.48

Abstract

ABSTRAKTaman Nasional Gunung Halimun-Salak (TNGHS) merupakan salah satu taman nasional yang memiliki ekosistem hutan hujan tropis terluas di Pulau Jawa. Berbagai kegiatan pemanfaatan lahan oleh masyarakat di dalam wilayah kelola TNGHS yang tidak sesuai dengan rencana zonasi TNGHS akan menyebabkan terganggunya ekosistem hutan. Tujuan penelitian ini adalah untuk menganalisis perubahan penggunaan lahan periode 2000-2010 dan faktor yang mempengaruhi perubahannya, serta untuk memprediksi penggunaan lahan tahun 2026 menggunakan model spasial perubahan penggunaan lahan dan merumuskan arahan penggunaan lahan di kawasan TNGHS. Simulasi perubahan penggunaan lahan berdasarkan pada faktor yang mempengaruhinya dilakukan dengan menggunakan model Conversion of Land Use and its Effects at Small Regional Extent (CLUE-S). Hasil penelitian menunjukkan bahwa selama periode 2000-2010, penggunaan lahan yang mengalami penurunan luas adalah hutan sebesar 5,55%. Penggunaan lahan yang mengalami peningkatan luas adalah ladang 2,21%, sawah 1,46%, semak 0,63%, lahan terbangun 0,34%, kebun campuran 0,60%, dan kebun teh 0,32%. Faktor yang mempengaruhi perubahan penggunaan lahan dari hutan menjadi non-hutan adalah kepadatan penduduk. Model CLUE-S yang disimulasikan memiliki ketelitian sebesar 88,53%. Arahan penggunaan lahan di kawasan TNGHS dalam penelitian ini adalah kebijakan restorasi hutan pada zona rehabilitasi, zona rimba, dan zona inti yang dapat mengurangi ketidaksesuaian penggunaan lahan dengan zonasi pada tahun 2026 menjadi 9,23%.Kata Kunci: perubahan penggunaan lahan, model spasial, CLUE-S, Sistem Informasi Geografis,Taman Nasional Gunung Halimun-SalakABSTRACTGunung Halimun-Salak National Park (GHSNP) is the largest tropical rain forest ecosystem in Java. A variety of landuse activities by communities that does not comply with the zoning plan of GHSNP will cause degradation of the forest ecosystem. This study aims to analyze landuse changes during the period of 2000-2010 and the driving factors of the landuse changes, and to predict the use of land in 2026 using spatial models of landuse change to formulate directives refinement for the landuse planning of GHSNP. Simulation of the landuse change based on its driving factors was carried out using the Conversion of Landuse and its Effects at Small Regional Extent (CLUE-S) model. The results show that there were changes in the landuse during the 2000-2010 periods. The most extensive landuse decline was forest that decreased by 5.5%. On the other hand, the landuse that extensively increased was cultivated land that increased by 2.21%, consisted of rice field that increased by 1.46%, bush that increased by 0.63%, mixed vegetation that increased by 0.60% and tea plantation that increased by 0.32%. The driving factor of the landuse changes from forest to non-forest was density population. CLUE-S prediction produced an accuracy of 88.53%.The policy of the directive landuse of the TNGHS region selected based on this study was the forest restoration on rehabilitation zones, forest zone, and core zone that could reduce the un-suitability landuse plan in the year 2026 by 9.23%.Keywords: landuse change, spatial model, CLUE-S, Geographical Information System, Gunung Halimun-Salak National Park
DIVERSITAS DAN PROFIL METABOLIT SEKUNDER JAMUR ENDOFIT YANG DIISOLASI DARI TUMBUHAN GAMBIR (Uncaria gambler) SERTA AKTIVITAS BIOLOGISNYA SEBAGAI ANTIBAKTERI Jamal, Yuliasri; Ilyas, Muhamad; Kanti, Atit; Agusta, Andria
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (853.072 KB) | DOI: 10.14203/beritabiologi.v9i2.2023

Abstract

Five kinds of endophytic filamentous fungi i.e. Pestalotiopsis sp. GNC, Fusarium sp. GNC-A, Fusahum sp. GNC-B, Pestalotiopsis sp. GUC and Fusarium sp. GUC were isolated from surface sterilized of steems of gambir nasi and gambir udang (Uncaria gambier Roxb.) collected from Rengat, Riau Province,Indonesia. Identification of the endophytic fungi were done through morphologically observations and chemotaxonomically approach. In an antibacterial assays, the ethyl acetate extract of the Pestalotiopsis sp.GNC cultures showed their activity against pathogenic bacteria, Eschericia coli, Staphylococcus aureus and Bacillus sublilis.Beside the above three pathogenic bacteria, the ethyl acetate extract of Fusarium sp. GNC-B culture was also active against
KERAGAMAN JENIS JAMUR ENDOFIT PADA PANDAN WANGI (PANDANUS AMARYLIFOLIUS) DAN AKTIVITAS ANTIJAMUR METABOLIT YANG DIPRODUKSINYA Jamal, Yuliasri; Ilyas, Muhamad; Kanti, Atit; Agusta, Andria
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 2 (2009): June 2009
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.303 KB) | DOI: 10.24002/biota.v14i2.2685

Abstract

The whole nine isolates of endophytic fungi have been obtained from leaves and roots of pandan wangi (Pandanus amarylifolius) collected from Bogor Botanical Garden. Identification of the fungi isolates were conducted based on their morphological characteristics, and revealed that one fungus belongs to the genus of Fusarium, one of Dreschlera, and 7 fungi isolates belong to Coelomycetes. The ethyl acetate extract of the fungi cultures in PDB and GYP media showed a diverse secondary metabolite profiles. Ethyl acetate extract derived from the culture of PWA-2 fungus in GYP medium showed an antifungal activity against Saccharomyces cerevisiae, but not to Fusarium oxysporum and Candida tropicalis. The GC-MS analysis of the active extract showed eugenol as an active component.
SCREENING AND EVALUATION OF VARIOUS CARBON SOURCES ON THE ABILITY OF TRICHODERMA HARZIANUM INACC TO SOLUBILIZE INSOLUBLE PHOSPHATE Napitupulu, Toga P.; Ilyas, Muhamad; Kanti, Atit; Sudiana, I. Made
JURNAL BIOLOGI INDONESIA Vol 15, No 2 (2019): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v15i2.3814

Abstract

ABSTRACTOur previous works revealed that Trichoderma harzianum InaCC (Indonesian Culture Collection) produced volatile organic compounds that inhibited the growth of Fusarium oxysporum. The objective of this study was to evaluate the ability of T. harzianum InaCC to solubilize insoluble phosphate and optimize the carbon sources condition. Screening was conducted to 10 isolates of T. harzianum on Pikovskaya?s broth in 100-mL conical flasks. The cultures were incubated at 30 ± 1°C for  7 days on a rotary shaker at 80 r/min. All  T. harzianum isolates were observed for the solubility of insoluble tricalcium phosphate with the highest ability was performed by T. harzianum InaCC F88. Using this isolate, the optimization of insoluble phosphate solubilization was conducted on modifed Pivoskaya medium in 500-mL conical flasks in similar screening incubation condition with applying of different combination of phopshate sources (tricalcium phosphate and rock phosphate) and carbon sources (dextrose, lactose, and sucrose). When tricalcium phosphate was substituted by rock phosphate, less soluble phosphate was produced. Glucose was the best carbon source used for solubilization of both tricalcium phosphate and rock phosphate, then followed by lactose and sucrose. Acidification of medium was not the major mechanism of phosphate solubilization by T. harzianum. Based on the ability of high phosphate solubilization, T. harzianum InaCC F88 is the most potential strain as a plant growth promoting fungus among the 10  isolates of T. harzianum Ina CC.  Key words:  biocontrol, Pikovskaya medium,  phosphate solubilization, Trichoderma harzianum
SCREENING AND EVALUATION OF VARIOUS CARBON SOURCES ON THE ABILITY OF TRICHODERMA HARZIANUM INACC TO SOLUBILIZE INSOLUBLE PHOSPHATE Napitupulu, Toga P.; Ilyas, Muhamad; Kanti, Atit; Sudiana, I. Made
JURNAL BIOLOGI INDONESIA Vol 15, No 2 (2019): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v15i2.3814

Abstract

ABSTRACTOur previous works revealed that Trichoderma harzianum InaCC (Indonesian Culture Collection) produced volatile organic compounds that inhibited the growth of Fusarium oxysporum. The objective of this study was to evaluate the ability of T. harzianum InaCC to solubilize insoluble phosphate and optimize the carbon sources condition. Screening was conducted to 10 isolates of T. harzianum on Pikovskaya?s broth in 100-mL conical flasks. The cultures were incubated at 30 ± 1°C for  7 days on a rotary shaker at 80 r/min. All  T. harzianum isolates were observed for the solubility of insoluble tricalcium phosphate with the highest ability was performed by T. harzianum InaCC F88. Using this isolate, the optimization of insoluble phosphate solubilization was conducted on modifed Pivoskaya medium in 500-mL conical flasks in similar screening incubation condition with applying of different combination of phopshate sources (tricalcium phosphate and rock phosphate) and carbon sources (dextrose, lactose, and sucrose). When tricalcium phosphate was substituted by rock phosphate, less soluble phosphate was produced. Glucose was the best carbon source used for solubilization of both tricalcium phosphate and rock phosphate, then followed by lactose and sucrose. Acidification of medium was not the major mechanism of phosphate solubilization by T. harzianum. Based on the ability of high phosphate solubilization, T. harzianum InaCC F88 is the most potential strain as a plant growth promoting fungus among the 10  isolates of T. harzianum Ina CC.  Key words:  biocontrol, Pikovskaya medium,  phosphate solubilization, Trichoderma harzianum