Hendromono Hendromono
Forest Plantation Research and Development Center

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GROWTH OF RAMIN (Gonystylus bancanus (Miq) Kurz.) PLANTATION ON VARIOUS PEAT SWAMP FORESTS IN INDONESIA Rostiwati, Tati; Murniati, Murniati; Hendromono, Hendromono
Indonesian Journal of Forestry Research Vol 4, No 2 (2007): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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

Abstract

Ramin (Gonystylus bancanus (Miq) Kurz.) is a trade name of timber produced from a group of Gonystylus species. It is a well-known species because of its high timber quality and value. Ramin natural population has been decreasing sharply since the last two decades due to over exploitation, and nowadays leads to extinction. The objective of  this research was to analyze the growth of ramin plantation on various sites.  Data were collected from February to April 2005 through field survey on five sites of peat-swamp forest areas in four provinces, Riau, Jambi, West and Central Kalimantan. The result showed that ramin annual early growth varied across sites.   It grew better on deep peat soil (3 - 4 m in depth) and under moderate shading (55 - 60%) during early growth. The highest early height growth (52.27 cm/year) occurred at Sei Bakau, West Kalimantan.  Whereas, it highest early diameter growth (0.73 cm/year) was found at Rokan Hilir, Riau. The characteristics of site are very important for a successful growth of ramin plantation, including peat depth and level of shading. Annual early growth of ramin as along in line with increasing of the plant age, namely a four- times increase of plant age (from 1.6 - 2 years to 6.5 - 7.3 years), the annual early height and diameter growth decreased until they reached a half and one third of the starting values. Since the growth of ramin is very slow, it is necessary to find and develop technologies to accelerate growth rate of  the ramin plants. Application of mycorrhizal fungal inoculum is a promising technology, but their role in promoting ramin growth and the needed cost must be tested and analyzed under various conditions of the peat-swamp soils in Indonesia.
POTENCY OF RAMIN (Gonystylus bancanus Kurtz.) AND OTHER COMMERCIAL SPECIES IN PEAT SWAMP FOREST MANAGED WITH TPTI SILVICULTURAL SYSTEM IN BAGAN, RIAU Hendromono, Hendromono
Indonesian Journal of Forestry Research Vol 2, No 2 (2005): 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.2005.2.2.89-98

Abstract

Ramin  (Gonystylus bancanus Kurtz.)  is one  of  the  tree  species in  peat-swamp  forest  that  is endangered due to excessive exploitation. The objective of this research was to assess the potency of rarnin and other commercial tree species in primary and logged over peat-swamp forests at Bagan, Riau. The tree stands were inventoried in primary forest of the 2004 and 2006 Annual Work Plan (RKTs) and in  the  1997  and  2001  RKTs  managed  with  Indonesian  Selective Cutting  and  Planting  (TPTI) silvicultural system.  The  result  showed  that  rarnin in  Bagan peat-swamp  forest  was not  evenly distributed. The total number of ramin  in tree stage in primary forests was fewer than that in  logged over forests.  The total number of ramin species at tree stage in primary forest was between 4.5  and 5 trees ha· with the important value index (IVI) of 10.3  to 12.0%,  whereas the one at logged over forest were between 2.5 and 15  trees ha· with theM    indices of 7.9 to 20.4%.  Commercial species of swamp meranti (Shorea uliginosaand S. teysmaniana) and balam/ suntai or (Palaqqiumspp.) were dominant at tree stage both in the primary and the logged over forests. Enrichment in logged over forests is not needed since the total number of seedlings and saplings  is enough. The total number of potential core trees in logged over forests was enough for the next cutting cycle. The effort that must be done in logged over forests is to protect them from illegal logging.
TREE TRUNK VOLUME OF Shorea SPECIES CASE STUDY IN DARMAGA AND HAURBENTES RESEARCH FOREST IN WEST JAVA INDONESIA Mindawati, Nina; Hendromono, Hendromono; Hiratsuka, M.; Toma, T.; Morikawa, Y.; Gintings, A. Ngaloken
Indonesian Journal of Forestry Research Vol 1, No 1 (2004): 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.2004.1.1.17-24

Abstract

Activities of  forest management  require a well planned, systematic and well directed handling, so that  achieving  maximal  and  beneficial  results in terms  of  economic,  ecological  and  social prospects.   In relevant  to data on trunk  volume of  available tree stands  are required  to set up a plan  intended  to produce  sustainable   timber. The  research was conducted  in the Darmaga  and Haurbentes  research forests of  the Forest  and Nature  Conservation  Research and Development Center located in West Java. The  trunk  volume model as conceived  was based  on the Smalians formula employed to particular tree species (i.e.  Shorea balanggeran;  S. guisso;S.leprosula; S.  mecistopteryx; S.ovalis; S. palembanica;S. pinanga;S.  selanica;S.seminisand S.  stenoptera).This  model could estimate the trunk  volume with non-destructive    sampling.  In this way, therefore,  the trunk  volume  can be estimated  from the tree diameter  on a single variable.
GROWTH OF RAMIN (Gonystylus bancanus (Miq) Kurz.) PLANTATION ON VARIOUS PEAT SWAMP FORESTS IN INDONESIA Rostiwati, Tati; Murniati, Murniati; Hendromono, Hendromono
Indonesian Journal of Forestry Research Vol 4, No 2 (2007): 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.2007.4.2.73-81

Abstract

Ramin (Gonystylus bancanus (Miq) Kurz.) is a trade name of timber produced from a group of Gonystylus species. It is a well-known species because of its high timber quality and value. Ramin natural population has been decreasing sharply since the last two decades due to over exploitation, and nowadays leads to extinction. The objective of  this research was to analyze the growth of ramin plantation on various sites.  Data were collected from February to April 2005 through field survey on five sites of peat-swamp forest areas in four provinces, Riau, Jambi, West and Central Kalimantan. The result showed that ramin annual early growth varied across sites.   It grew better on deep peat soil (3 - 4 m in depth) and under moderate shading (55 - 60%) during early growth. The highest early height growth (52.27 cm/year) occurred at Sei Bakau, West Kalimantan.  Whereas, it highest early diameter growth (0.73 cm/year) was found at Rokan Hilir, Riau. The characteristics of site are very important for a successful growth of ramin plantation, including peat depth and level of shading. Annual early growth of ramin as along in line with increasing of the plant age, namely a four- times increase of plant age (from 1.6 - 2 years to 6.5 - 7.3 years), the annual early height and diameter growth decreased until they reached a half and one third of the starting values. Since the growth of ramin is very slow, it is necessary to find and develop technologies to accelerate growth rate of  the ramin plants. Application of mycorrhizal fungal inoculum is a promising technology, but their role in promoting ramin growth and the needed cost must be tested and analyzed under various conditions of the peat-swamp soils in Indonesia.