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|a (JST)43582320
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|c DE-627
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|a eng
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|a Sist, Plinio
|e verfasserin
|4 aut
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|a STAND STRUCTURE AND FLORISTIC COMPOSITION OF A PRIMARY LOWLAND DIPTEROCARP FOREST IN EAST KALIMANTAN
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|c 1999
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
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|a This paper presents the structure and species composition of the primary lowland dipterocarp forest in Berau, East Kalimantan, Indonesia. This study was based on three undisturbed forest plots, 4 ha each, totalling 12 ha, where 93% of the trees (dbh ≥ 10 cm) were identified at the taxa level. The density, basal area and standing volume were on average and respectively 521 trees ha⁻¹, 31 m² ha⁻¹ and 383 m³ ha⁻¹. The dipterocarps represented about 25% of the tree population, 50% of the basal area and 60% of the standing volume. In primary forest 538 different taxa were recognised representing a mean of 182 tree species per ha. The families Dipterocarpaceae and Euphorbiaceae were the main important taxa in both density and number of species (61 species each). The structure of the forest of Berau is very similar to that of Sabah or other parts of Northern Borneo. However, the main characteristic of this forest is its remarkable richness in dipterocarps, in comparison with the northern parts of Borneo, which exhibits in mean 29 species ha⁻¹ and 61 species for the 12 ha surveyed. The forests of Sabah are mainly dominated by light-demanding dipterocarp species such as Parashorea spp. and Dryobalanops spp. This could result from important canopy disturbances caused by climatic events like long period of drought or cyclone. The high species richness of the Berau forest may be linked to a longer stability and a relative constancy of the climate in the region. The hypothesis of a possible impact of drought events on the forest dynamics and consequently on species distribution and richness in Borneo is discussed. However, it is stressed that the lack of data for Kalimantan is undoubtedly an handicap for the analysis of phytogeographical variations within the region. In the study area, the first record for Indonesia of the two dipterocarps species Shorea leptoderma Meijer and Shorea symingtonii Wood demonstrates that our knowledge of the flora of Kalimantan is still to be improved. Artikel ini membentangkan mengenai Struktur dan komposisi spesies hutan dipterokarpa tanah pamah primer di Berau, Kalimantan Timur, Indonesia. Kajian ini didasarkan kepada tiga petak hutan tidak rosak, setiap satu seluas 4 ha, berjumlah 12 ha iaitu 93% daripada pokok tersebut (dbh ≥ 10 cm) dikenal pasti pada peringkat taksa. Kepada tan, lúas pangkal dan isipadu dirían ialah pada kadar purata dan masing-masing ialah 521 pokok sehektar, 31 pokok sehektar, dan 383 m³ha⁻¹. Dipterokarpa mewakili kira-kira 25% daripada populasi pokok, 50% daripada lúas kawasan dan 60% daripada isipadu dirían. Di dalam hutan primer, 538 taksa yang berbeza dikenali mewakili sebanyak 182 spesies pokok sehektar. Famili Dipterocarpaceae dan Euphorbiaceae merupakan taksa yang penting dalam kedua-dua kepadatan dan bilangan spesies (61 spesies setiap satu). Struktur hutan di Berau sama dengan Struktur hutan di Sabah atau bahagian-bahagian lain di Borneo Utara. Bagaimanapun, ciri utama hutan ini ialah kekayaan dipterokarpanya, berbanding dengan bahagian utara Borneo, yang mempamerkan secara purata 29 spesies sehektar dan 61 spesies bagi 12 hektar yang disurvei. Hutan di Sabah kebanyakannya didominasi oleh spesies dipterokarpa yang memerlukan banyak cahaya seperti Paroshoraz spp. dan Dryobalanopsspp. Ini mungkin terjadi akibat gangguan sudur yang penting akibat gangguan cuaca seperti tempoh kemarau atau taufan yang lama. Kekayaan spesies di hutan Berau mungkin ada kaitannya dengan kestabilannya dan ketetapan cuaca secara relatif di kawasan tersebut. Hipótesis mengenai kemungkinan kesan kemarau terhadap dinamik hutan dan seterusnya terhadap taburan dan kekayaan spesies di Borneo juga turut dibincangkan. Bagaimanapun, ditekankan bahawa kekurangan data bagi Kalimantan tidaksyaklagi merupakan satu hambatan untukmenganalisiskepelbagaian fitogeografi di kawasan tersebut. Di kawasan yang dikaji, catatan pertama bagi Indonesia untuk dua spesies dipterokarpa iaitu Shorea leptoderma dan Shorea symingtonii menunjukkan bahawa pengetahuan kita mengenai flora di Kalimantan masih perlu ditingkatkan.
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|a © Forest Research Institute Malaysia 1999
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4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Biocenosis
|x Plant communities
|x Forests
|x Rain forests
|x Tropical rain forests
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Biocenosis
|x Plant communities
|x Forests
|x Tropical forests
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Biocenosis
|x Plant communities
|x Forests
|x Old growth forests
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Dendrology
|x Trees
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Plant ecology
|x Forest ecology
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Forestry
|x Forestry research
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Topography
|x Lowlands
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Applied ecology
|x Environmental management
|x Natural resource management
|x Ecosystem management
|x Forest management
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Biological taxonomies
|x Taxa
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Biocenosis
|x Plant communities
|x Forests
|x Lowland forests
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| 655 |
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4 |
|a research-article
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|a Saridan, Amiril
|e verfasserin
|4 aut
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|i Enthalten in
|t Journal of Tropical Forest Science
|d Forest Research Institute Malaysia
|g 11(1999), 4, Seite 704-722
|w (DE-627)385613326
|w (DE-600)2142662-4
|x 25219847
|7 nnns
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1 |
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|g volume:11
|g year:1999
|g number:4
|g pages:704-722
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|u https://www.jstor.org/stable/43582320
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|d 11
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|e 4
|h 704-722
|