Abstract
Abstract. Tirkaamiana MT, Partasasmita R. Kamarubayana L. 2019. Growth patterns of Shorea leprosula and Dryobalanops lanceolata in Borneo’s forest managed with Selective Cutting with Line Replanting System. Biodiversitas 20: 1160-1165. Dryobalanops lanceolata is a species of plant in the family Dipterocarpaceae, which indigenous of Borneo. It is found in at least five protected areas (Kabilli-Sepilok Forest Reserve, Danum Valley Conservation Area, Ulu Temburong, Lambir, and Gunung Mulu National Parks), but is threatened elsewhere due to habitat loss. The demand for its timber is very high, so it requires conservation efforts while at the same time maintaining its productivity to meet the timber demand. One of the efforts to increase productivity of production forest in Indonesia is implementing Selective Logging with Line Replanting System (TPTJ). In this system superior species are planted in the planting lines. This study aimed to determine the growth of Shorea leprosula and Dryobalanops lanceolata planted in different planting line widths. Data of diameter increment of S. leprosula and D. lanceolata were obtained by observing 4 permanent sample plots (PUP) at concession areas of PT Balikpapan Forest Industries in Penajam Paser Utara, East Kalimantan, Indonesia. The results showed that the average diameter increment of S. leprosula and D. lanceolata at the planting line width of 3 meters was 1.47cm/yr and 0.74 cm/yr respectively, and at the planting line width of 6 meters was 2.08 cm/yr and 1.14 cm/yr respectively. The differences in planting line width had very significant effect on the growth and diameter increment of S. leprosula, presumably due to the increase of light intensity to optimal level which accelerates stomata opening and transpiration rate, thus affecting the rate of photosynthesis.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Shorea leprosula diameter increment was 1.47cm/yr in 3 meter lines.
- Taxon
- Shorea leprosula
Rubroshorea leprosulat0 - Treatment
- planting line width of 3 meterse0
- Outcome
- diameter incremente0
- Value
- 1.47cm/yre0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“average diameter increment of S. leprosula and D. lanceolata at the planting line width of 3 meters was 1.47cm/yr and 0.74 cm/yr respectively”
t0“Shorea leprosula”
Claim · model-written summary
Dryobalanops lanceolata diameter increment was 0.74 cm/yr in 3 meter lines.
- Taxon
- Dryobalanops lanceolataDryobalanops lanceolatat0
- Treatment
- planting line width of 3 meterse0
- Outcome
- diameter incremente0
- Value
- 0.74 cm/yre0
Verbatim
e0“average diameter increment of S. leprosula and D. lanceolata at the planting line width of 3 meters was 1.47cm/yr and 0.74 cm/yr respectively”
t0“Dryobalanops lanceolata”
Claim · model-written summary
Shorea leprosula diameter increment was 2.08 cm/yr in 6 meter lines.
- Taxon
- Shorea leprosulaRubroshorea leprosulat0
- Treatment
- planting line width of 6 meterse0
- Outcome
- diameter incremente0
- Value
- 2.08 cm/yre0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the average diameter increment of S. leprosula and D. lanceolata at the planting line width of 3 meters was 1.47cm/yr and 0.74 cm/yr respectively, and at the planting line width of 6 meters was 2.08 cm/yr and 1.14 cm/yr respectively”
t0“Shorea leprosula”
Claim · model-written summary
Dryobalanops lanceolata diameter increment was 1.14 cm/yr in 6 meter lines.
- Taxon
- Dryobalanops lanceolataDryobalanops lanceolatat0
- Treatment
- planting line width of 6 meterse0
- Outcome
- diameter incremente0
- Value
- 1.14 cm/yre0
Verbatim
e0“The results showed that the average diameter increment of S. leprosula and D. lanceolata at the planting line width of 3 meters was 1.47cm/yr and 0.74 cm/yr respectively, and at the planting line width of 6 meters was 2.08 cm/yr and 1.14 cm/yr respectively”
t0“Dryobalanops lanceolata”
Claim · model-written summary
Planting line width significantly affected Shorea leprosula growth and diameter increment.
- Taxon
- Shorea leprosulaRubroshorea leprosulat0
- Treatment
- planting line widthe0
- Outcome
- growth and diameter incremente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences in planting line width had very significant effect on the growth and diameter increment of S. leprosula”
t0“Shorea leprosula”
Claim · model-written summary
The authors suggest greater light intensity accelerated stomatal opening and transpiration, affecting photosynthesis in Shorea leprosula.
- Taxon
- Shorea leprosulaRubroshorea leprosulat0
- Outcome
- rate of photosynthesise0
- Qualifier
- increase of light intensity to optimal levele0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“presumably due to the increase of light intensity to optimal level which accelerates stomata opening and transpiration rate, thus affecting the rate of photosynthesis”
t0“Shorea leprosula”