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Ishak Sumantri
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Energy Materials Science & Nanotechnology

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PENDUGAAN VOLUME TEGAKAN BERDASARKAN JUMLAH DAN KERAPATAN TAJUK PADA FOTO UDARA Ishak Sumantri; Haryono Haryono; Machfudh Machfudh
Jurnal Penelitian Hasil Hutan Vol 3, No 1 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1986.3.1.32-37

Abstract

The relationship of stumpage volume by crown densities persentage and numbers of crown which measured on aerial photos are the object of this study. Research take place in tropical rain forest which have been harvested by Indonesia Selective Cutting (TPI) in East Kalimantan. Result of model analysis are :1. The distribution of crown densities percentage and numbers of crown data are normal distribution.2. The relationship of stumpage volume over crown densities percentage and numbers of crown data are :V = -169. 7132 + 3.8514 N + 2.8532C + 0.0004C2 + 0.014CNwhere :   V : stumpage volume (m3) N : Numbers of crown C : Crown densities percentage.Coeficient of determination of the relation (R) = 0. 7828. This model is significant at 95 % level after tested by F- test.3. The model and its analysis can be taken in east Kalimantan only. 
PENDUGAAN VOLUME TEGAKAN BERDASARKAN JUMLAH DAN KERAPATAN TAJUK PADA FOTO UDARA Ishak Sumantri; Haryono Haryono; Machfudh Machfudh
Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (10953.013 KB) | DOI: 10.20886/jphh.1986.3.3.19-24

Abstract

SummaryThe relationship description of stumpage  volume  over the crown densities and number of crown which is measured on serial photos  are the object of this study.  The study  was conducted  research take at a tropical rain forest  which have been harvested  by using the Indonesia  Selective Cutting  (TPI) system  in East Kalimantan.   The model  analysis reveals that:1.    The distribution  of crown densities (%) and number  of crown data are normally  distributed.2.   The relationship  of stumpage  volume  over the crown densitys percentage  and number  of crown can be expressed as: V   =    -169.  7132 + 3.8514N  + 2.8532  + 0.0004C2    + 0.014CNWhere:    V  :  Stumpage  volume,  (m3)N   :  Numbers  of crown,  unitlessC   :  Crown, densitys,  %.Coefficient  of determination  (R)   =   0. 7828. This model  is significant  at 95%   level after  tested by F-test.3.   The model  and its analysis only valid in East Kalimantan.
PENDUGAAN VOLUME TEGAKAN BERDASARKAN JUMLAH DAN KERAPATAN TAJUK PADA FOTO UDARA Ishak Sumantri; Haryono Haryono; Machfudh Machfudh
Jurnal Penelitian Hasil Hutan Vol 3, No 1 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2683.77 KB) | DOI: 10.20886/jphh.1986.3.1.32-37

Abstract

The relationship of stumpage volume by crown densities persentage and numbers of crown which measured on aerial photos are the object of this study. Research take place in tropical rain forest which have been harvested by Indonesia Selective Cutting (TPI) in East Kalimantan. Result of model analysis are :1. The distribution of crown densities percentage and numbers of crown data are normal distribution.2. The relationship of stumpage volume over crown densities percentage and numbers of crown data are :V = -169. 7132 + 3.8514 N + 2.8532C + 0.0004C2 + 0.014CNwhere :   V : stumpage volume (m3) N : Numbers of crown C : Crown densities percentage.Coeficient of determination of the relation (R) = 0. 7828. This model is significant at 95 % level after tested by F- test.3. The model and its analysis can be taken in east Kalimantan only. 
PENDUGAAN VOLUME TEGAKAN BERDASARKAN JUMLAH DAN KERAPATAN TAJUK PADA FOTO UDARA Ishak Sumantri; Haryono Haryono; Machfudh Machfudh
Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1986.3.3.19-24

Abstract

SummaryThe relationship description of stumpage  volume  over the crown densities and number of crown which is measured on serial photos  are the object of this study.  The study  was conducted  research take at a tropical rain forest  which have been harvested  by using the Indonesia  Selective Cutting  (TPI) system  in East Kalimantan.   The model  analysis reveals that:1.    The distribution  of crown densities (%) and number  of crown data are normally  distributed.2.   The relationship  of stumpage  volume  over the crown densitys percentage  and number  of crown can be expressed as: V   =    -169.  7132 + 3.8514N  + 2.8532  + 0.0004C2    + 0.014CNWhere:    V  :  Stumpage  volume,  (m3)N   :  Numbers  of crown,  unitlessC   :  Crown, densitys,  %.Coefficient  of determination  (R)   =   0. 7828. This model  is significant  at 95%   level after  tested by F-test.3.   The model  and its analysis only valid in East Kalimantan.
Co-Authors Haryono Haryono Machfudh Machfudh