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Impact of land slope, tree density and basal area on fire intensity in pinus merkusii plantation forest

Jurnal Penelitian Kehutanan Wallacea · Vol. 12 No. 1 (2023) · pp. 27–33

DOI
10.24259/jpkwallacea.v12i1.26707
ISSN
2407-7860, 2302-299X
Published
2023-05-31
Publisher
Foresty Faculty of Hasanuddin University
Language
en

Abstract

Forest fires are not solely determined by the quantity and quality of plant debris as fuel, but also influenced by some extrinsic factors. This study aims to examine the effect of some factors (slopes, tree density, and tree basal area) on the intensity of forest fires. The study was conducted in a 1 ha (100m x 100m) plot in the Pinus merkusii plantation 10 months after the fire. The plot was divided into 10 m x 10 m subplots, therefore there were 100 subplots. Each tree over 5 cm in diameter found in the plot was numbered consecutively, recorded its species name, measured its diameter, and determined whether it was alive or dead. The slope level in each subplot was measured. Multiple regression analysis was used to detect the influence of slope level, tree density, and basal area on the number of dead trees in each subplot. Results show that slopes, tree density, and basal area influenced proportionally the intensity of forest fires (R2 = 0,507; p<0.05). However, when the partial analysis was applied to detect the influence of each class factor, not all of the classes were found significant. These results reveal that there are several other factors not measured in this study that also influence fire intensity, which we suspect are tapping holes and tree diameter.

Keywords

Collaboration network of the authors

32 authors · 84 co-authorship links

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  • Hasanuddin University
  • Nasional University
  • Affiliation unknown
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Co-authorOrganisationJoint articles
Fadly SuhatiAffiliation unknown5
Kaimuddin KaimuddinAffiliation unknown4
Wardiman Mas'udAffiliation unknown4
Fardi Ali SyahdarAffiliation unknown3
Arif KoesharyadiAffiliation unknown3
Amran AchmadHasanuddin University2
Anwar UmarAffiliation unknown2
AsriannyAffiliation unknown2
Sitti SalehaAffiliation unknown1
Alya HeldayantiAffiliation unknown1
Asrianny AsriannyAffiliation unknown1
Munajat NursaputraAffiliation unknown1
Abdur Rahman ArifAffiliation unknown1
Risye DwiyaniAffiliation unknown1
Lady ChaniaAffiliation unknown1
Ida Bagus Oka AgastyaAffiliation unknown1
Dian Adhetya Arif ArifAffiliation unknown1
Tamrin Salim MahifaAffiliation unknown1
Roland A BarkeyAffiliation unknown1
Laode Muhammad IqbalAffiliation unknown1
Muhammad DasirAffiliation unknown1
Syamsu RijalAffiliation unknown1
Chairil AAffiliation unknown1
Try ArdiansyahAffiliation unknown1
Agus SalimNasional University1
Ngakan Putu OkaAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journal.unhas.ac.id/index.php/wallacea/oai, first harvested 2 Nov 2026, last seen 2 Nov 2026.
Original metadata (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en">Impact of land slope, tree density and basal area on fire intensity in pinus merkusii plantation forest</dc:title>
	<dc:creator xml:lang="en">Ihsan, Muh.</dc:creator>
	<dc:creator xml:lang="en">Putra, Putu Supadma</dc:creator>
	<dc:creator xml:lang="en">Nasri, Nasri</dc:creator>
	<dc:creator xml:lang="en">Hamzah, Andi Siady </dc:creator>
	<dc:creator xml:lang="en">Maulany, Risma illa </dc:creator>
	<dc:creator xml:lang="en">Ngakan, Putu Oka</dc:creator>
	<dc:subject xml:lang="en">plot</dc:subject>
	<dc:subject xml:lang="en">subplot</dc:subject>
	<dc:subject xml:lang="en">forest fire</dc:subject>
	<dc:subject xml:lang="en">dead tree</dc:subject>
	<dc:subject xml:lang="en">survival</dc:subject>
	<dc:description xml:lang="en">Forest fires are not solely determined by the quantity and quality of plant debris as fuel, but also influenced by some extrinsic factors. This study aims to examine the effect of some factors (slopes, tree density, and tree basal area) on the intensity of forest fires. The study was conducted in a 1 ha (100m x 100m) plot in the Pinus merkusii plantation 10 months after the fire. The plot was divided into 10 m x 10 m subplots, therefore there were 100 subplots. Each tree over 5 cm in diameter found in the plot was numbered consecutively, recorded its species name, measured its diameter, and determined whether it was alive or dead. The slope level in each subplot was measured. Multiple regression analysis was used to detect the influence of slope level, tree density, and basal area on the number of dead trees in each subplot. Results show that slopes, tree density, and basal area influenced proportionally the intensity of forest fires (R2 = 0,507; p&amp;lt;0.05). However, when the partial analysis was applied to detect the influence of each class factor, not all of the classes were found significant. These results reveal that there are several other factors not measured in this study that also influence fire intensity, which we suspect are tapping holes and tree diameter.</dc:description>
	<dc:publisher xml:lang="en">Foresty Faculty of Hasanuddin University</dc:publisher>
	<dc:date>2023-05-31</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unhas.ac.id/index.php/wallacea/article/view/26707</dc:identifier>
	<dc:identifier>10.24259/jpkwallacea.v12i1.26707</dc:identifier>
	<dc:source xml:lang="en">Jurnal Penelitian Kehutanan Wallacea; Vol. 12 No. 1 (2023); 27-33</dc:source>
	<dc:source>2407-7860</dc:source>
	<dc:source>2302-299X</dc:source>
	<dc:language>en</dc:language>
	<dc:relation>https://journal.unhas.ac.id/index.php/wallacea/article/view/26707/9839</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2023 Jurnal Penelitian Kehutanan Wallacea</dc:rights>
</oai_dc:dc>