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Floresta e Ambiente

Print version ISSN 1415-0980On-line version ISSN 2179-8087

Floresta Ambient. vol.26 no.3 Seropédica  2019  Epub May 23, 2019 

Original Article

Conservation of Nature

Vegetation Recovery of Logged-over Dipterocarp Forests In Central Kalimantan, Indonesia

1Department of Silviculture, Faculty of Forestry, Bogor Agricultural University – IPB, Bogor/West Java, Indonesia


Forest utilization usually has an impact on changes in forest structure and species composition. The species of trees selected and ecosystem management system that refer to biodiversity characteristics will be explained by better knowledge of Functional Species Group (FSG). The purpose of this study was to determine the composition of vegetation recovery based on FSG in production forest managed with silvicultural system known as Selective Cutting and Line Planting System (SCLP) and undisturbed forest known as Germplasm Preservation Areas (GPCA) in Central Kalimantan, Indonesia. The results showed that the proportion of climax group in the entire observation plots was greater than pioneer species group, i.e. climax 100 species and pioneer 59 species. Stand structure both climax and pioneer species group has inverse J shape curve. It means that the species composition of logged-over forest is still in balance condition, characterized with high index of diversity (H' > 3).

Keywords:  functional species group; selective cutting; species composition; stand structure; biodiversity


Undisturbed lowland dipterocarp forests have clean forest floor, various niches, high diversity; nutrients were saved in biomass (Ewusie, 1980; MacKinnon et al., 1996). Indonesia tropical rainforest is managed using single selective cutting. Some of the forest concessions implemented an intensive forest management system. The main activity of this system is selective cutting with minimum diameter limit and planting intensively in line to enrich standing stock. However, the selective cutting system is risky as it obviously affects the various species of a plant community unevenly. Any disturbances, such as logging or landslides result in stand or seedling damages, including changes in forest structure and composition (Hendrison, 1990; Cannon et al., 1994; Okuda et al., 2003), and in soil nutrients (Nussbaum et al., 1995). The effects of selective logging on structure and species composition and its implication to the second cutting cycle have been sparsely documented up to now. Information about the conditions of residual stands is important and urgently required. Such information is a basic prerequisite for estimating the harvestable volume for the next cutting cycle, and for scheduling timber stand improvement. Relatively comprehensive data exist for Kalimantan forests (Cannon et al., 1994). More importantly, it changes in ecological balance with changes in stand structure and species composition. One can explain the changes through study approach known as functional species group.

Functional Species Group (FSG) is a group of species having identical patterns of resource use, growth rate, death and regeneration (Gitay & Noble, 1997). Better knowledge of FSG will explain the unity of the species of trees selected in a group on the harvesting, selection silvicultural techniques and ecosystem management system to explain its biodiversity characteristics such as its habitat quality and ecosystem processes (Pohris, 2009). Identification of functional groups can help understand and predict how communities and ecosystem properties might be affected by environmental changes.

Silvicultural system of Selective Cutting and Line Planting system (SCLP) is one of the systems for forest management to improve forest productivity through planting in line system. The SCLP was introduced and applied in logged-over forest (LoA). Suparna & Purnomo (2004) stated that the objectives of utilizing dipterocarps species using SCLP is for managing natural forests to increase the productivity of tropical rainforest and maintain the biodiversity. The species of dipterocarps suitable on degraded forest would be recommended for rehabilitation program to conserve and increase the productivity of tropical rainforest.

Up to now the evaluation of silvicultural system SCLP is in progress. Evaluation is necessary as its application has not yet been tested until it reaches its 25 years cycle. One of the aspects to be evaluated is the ecological process (vegetation processes) in the intermediate line or conservation line. It consists of residual stand as wide as 17 meters, which is expected to maintain the biodiversity of the forest.

The objective of this study is to determine the stand structure and species composition of the logged-over forests based on FSG. The logged-over forests applied by Selective Cutting and Line Planting Silvicultural System (SCLP) with intensive silviculture technique.


2.1. Study site and time schedule

The study was carried out in April-May 2014 in the production forest on logged-over forest areas in Central Kalimantan, Indonesia. Selective Cutting and Line Planting Silvicultural System (SCLP) with intensive silviculture technique have been applied in the logged-over forest.

2.2. Location of plot establishment

Twelve observation plots were located in logged-over forest managed using SCLP silvicultural system and the Germplasm Preservation Area (GPCA), at the production forest of the forest concession area Sarpatim Ltd, Central Kalimantan, Indonesia. The objects of the study were GPA representing primary forest, LoA of 9 years after logging, LoA of 7 years after logging, LoA of 5 years after logging, LoA of 3 years after logging and LoA of 1 year after logging. The size of each plot was 100 m × 100 m for vegetation analysis, as presented at Figure 1.

Figure 1 Observation plots layout. 

2.3. Vegetation analysis

Methods for data collection used the modified of transects line and plot. Tree level measurement was done by the method of lines, while for regeneration was done by the terraced-line method (Goldsmith et al., 1986). The length of the observation plot was 100 m with a width of 17 m. Each track is divided into five plots measuring 17 m × 20 m. Five plots each divided into four subplots of observation sized 2 m × 2 m for seedlings observation, 5 m × 5 m for saplings observation, 10 m × 10 m for pole level observation, and 17 m × 20 m for tree observation. The tree level measurement is presented at Figure 2. Data for vegetation analysis were the species and its number at all levels of growth (seedlings, saplings, poles and trees), as well as the diameter and height of the tree trunk on the pole and tree level.

Figure 2 Line design of vegetation analysis. 

2.4. Grouping data

Grouping data according to the FSG groups were pioneer and climax species. The grouping is based on the assumption that the patterns of stand structure dynamics are different for each species group of FSG. Criteria are presented at Table 1.

Table 1 Functional Species Group (FSG) based on the different autecological characteristics. 

Characteristic Pioneer Climax
Site plasticity
Dispersal of seeds
Viability of seeds
Dormancy of seeds
Germination of seeds
Growth behavior
Final tree height
Wood density
Early secondary forest
Small, produced in high numbers annually
Very wide
Very often, orthodox
In full light, open area
Fast growing during the immature phase,
Early culmination of the current annual increment
< 20 m
Early beginning of the maturity phase,
Short longevity (< 50 years)
Primary forest
Large, produced in low numbers not annually
Seldom, recalcitrant
In shade, below canopy
Slow growing during the immature phase,
Late culmination of the current annual increment
> 30 m
Variable to high
Late beginning of the maturity phase,
Long longevity (> 100 years)

Source: Pohris (2009).

2.5. Data analysis

2.5.1. Stand structure

Stand structure describes the distribution of tree species number (N/ha) based on the tree diameter in the forest area (Husch, 1963).

2.5.2. Composition of species regeneration

The availability of sufficient new natural regeneration stands ensures the occurrence of natural forest regeneration. Wyatt-Smith (Wyatt-Smith, 1963) stated that the regeneration is considered adequate if the number of seedlings consists of 1000 stems/ha, saplings of 240 stems/ha, and poles of 75 stems/ha.

2.5.3. Importance Value Index (IVI)

Importance Value Index (IVI) is used to analyze dominance (mastery) of a species in a particular community. The mathematical calculation formula of IVI according to Misra (1980) is as follows (Equations 1-6):

Density (K) ="number of individuals" (N)unit area (ha) (1)
Relative density (KR) =Number of individualsof one species (N/ha)the total number of individualsof all species (N/ha)×100% (2)
Frequency (F) =inventory points occupied by a given speciesmeasure of species distribution across the site (3)
Relative frequency (FR) =Number of individuals of onespeciesfrekuensi suatu jenisfrekuensi seluruh jenis×100% (4)
Dominance (D) =dominance each species within the study area m²total basal area per unit area (ha) (5)
Dominansi Relatif (DR) =Number of individuals ofone species (m²/ha)the total number of individualsof all species (m²/ha)×100% (6)

2.5.4. Species Diversity Index (H')

Species diversity index is a parameter used to determine the stability of a community or a community’s ability to keep themselves steady from the disruption of its components. Analysis of Diversity Index (H') is calculated using the formula diversity of Shanon (Magurran, 1988), as follows (Equation 7):

H´= -iniNlnniN (7)

H' = Shannon Diversity Index type; ni = the density value of the i-species; N = total density.

The criteria for the analysis of species diversity index is: if H' < 2 the value of the species diversity is in the low category; if 2 < H' < 3 the value is in the medium category; finally when H' > 3 it is in the high category (Magurran, 1988).

2.6. General condition of the study area

The study was conducted in the Kalek River and River Nahiang forest group (111°55' – 112°19' E and 1°12' – 1°56' S), district of Seruyan, Katingan, Kotawaringin East, Central Kalimantan Province, Indonesia.

The elevation of the study area ranges from 18-944 m above sea level. The study area is characterized by hilly and undulating terrain. The study sites is dominated by Dystropepts covering area of approximately 61%, and Tropodults covering areas of 39%. Climate types are based Schmidt & Ferguson. The mean annual rainfall for 145 days per year averaged 3086 mm. The highest rainfall occurs from October to January and the lowest rainfall occurs in July to September. Average humidity ranged between 38.3% and 85.6%. In terms of hydrology, PT Sarpatim is unique with stream flows of three Watershed as follows: Seruyan, Mentubar, and Mentaya watersheds, respectively.


3.1. Species composition

Analysis of the stand density and species contribution describe a species composition of stands, while the diameter class distribution analysis illustrates the structure of a stand. Species composition of stands is grouped in Functional Group Species into pioneer and climax groups. In addition, by knowing the species composition it is possible to determine the balance of a forest community. According to the functional species group, there are 59 pioneer species and 100 climax species at the entire observation plots. Figure 3 shows the number of pioneer and climax species group, respectively at all growth stages. The community of seedlings of pioneer species does not show a considerable difference between plots. If we observe, the number of species at LoA 9 and LoA 5 is lower than in the other plots, respectively 15 and 13 species.

Figure 3 Total species (a) pioneer; (b) climax in all plot observations. 

It can be said that the canopy at both plots are quite dense so that the growing site is not suitable for light demanders to grow and occupy the space. In contrast, the recruitment of seedlings of climax species is higher than of pioneer species. In other words, all the residual stands provide growing space favorable for climax species to grow.

At saplings stage, the species of climax still dominate the entire plots. The high sapling abundance is triggered by higher sun intensity that was still penetrating an open canopy due to selective logging practices (Clark & Covey, 2012). Similarly for poles and trees. In general, one can say that selective cutting has created growing space, providing stimulus for the development of regeneration climax species. The presence of species in the logged-over forest is affected by intensity of logging. So that regeneration cannot take place properly.

Table 2 shows density and the species contribution at tree level. In general, the larger proportion of tree at all plots is still dominated by climax species, more than 50%, being the highest at LoA 5, 84.35%. The number of trees of climax species at GPCA plot that represent primary forest is generally higher compared to logged-over area. It should be emphasized that the areas studied were sufficient in pohon inti or potential trees. According to the regulation, the number of potential trees should be minimum 25 trees per ha. This means that the logged stand would have a better chance of having a higher recruitment of pohon inti for the next cutting cycle (in 30 years).

Table 2 Tree density and its contribution in all observation plots. 

Area Density (N/ha) Total Species contribution (%)
Pioneer Climax Pioneer Climax
GPCA 148.75 182.50 331.25 44.91 55.09
LOA 9 years 45.00 137.50 182.50 24.66 75.34
LOA 7 years 52.50 137.50 190.00 27.63 72.37
LOA 5 years 28.75 155.00 183.75 15.65 84.35
LOA 3 years 46.25 126.25 172.50 26.81 73.19
LOA 1 years 51.25 105.00 156.25 32.80 67.20

Table 3 represents density and proportion of climax and pioneer species of poles stage in all observation plots. The density and species contribution at the poles stage of climax species is higher compared to the pioneer species in all study plots, except at plot LoA 1 with 85 individuals of climax poles per ha. The development of poles is affected by the opening of the canopy by selective cutting that improves the light condition for tree in the poles stage.

Table 3 Density and its contribution to the entire observation plots on the pole stage. 

Area Density (N/ha) Total Species contribution (%)
Pioneer Climax Pioneer Climax
GPCA 225 325 550 40.91 59.09
LOA 9 years 200 200 400 50.00 50.00
LOA 7 years 140 305 445 31.46 68.54
LOA 5 years 60 165 225 26.67 73.33
LOA 3 years 130 275 405 32.10 67.90
LOA 1 years 95 85 180 52.78 47.22

Regarding the pioneer species, the number of poles is low in plot LoA 5 and then increases in plots LoA 1, LoA 3, LoA 7 and LoA 9. This trend is rather different in climax species. Density and species contribution of seedlings and saplings stage are presented at Tables 4 and 5.

Table 4 Density and its contribution to the entire observation plots on the seedlings stage. 

Area Density (N/ha) Total Species contribution (%)
Pioneer Climax Pioneer Climax
GPCA 17750 22875 40625 43.69 56.31
LOA 9 years 12375 22250 34625 35.74 64.26
LOA 7 years 11875 17625 29500 40.25 59.75
LOA 5 years 4625 23125 27750 16.67 83.33
LOA 3 years 15750 20875 36625 43.00 57.00
LOA 1 years 13750 17625 31375 43.82 56.18

Table 5 Density and its contribution to the entire observation plots on saplings stage. 

Area Density (N/ha) Total Species contribution (%)
Pioneer Climax Pioneer Climax
GPCA 1360 1460 2820 48.23 51.77
LOA 9 years 2940 2880 5820 50.52 49.48
LOA 7 years 2380 3160 5540 42.96 57.04
LOA 5 years 2060 2360 4420 46.61 53.39
LOA 3 years 2720 2200 4920 55.28 44.72
LOA 1 years 1500 1520 3020 49.67 50.33

The recruitment of seedlings and saplings in logged-over stand give some indications of the impact of selective cutting on natural regeneration. This data can be used to decide whether natural regeneration is sufficient for sustainable management or not.

Regarding the recruitment of seedlings, selective cutting has a positive effect on regeneration density. It can be seen at Table 4 that the number of seedlings are high at all plots. The number of seedlings of climax species is higher compared to pioneer species. Looking at the number of seedlings of climax species there are no consistent trends. The number of climax species at LoA 5 is higher in than other plots. From a low number at LoA 1 and LoA 7, seedlings density increases in the following plots: LoA 3, LoA 9, GPCA and LoA 5. Perhaps, due to the canopy closure, seedlings density declined at LoA 1 and LoA 7. Pioneer species does not play a role at logged-over stand. This may correlate with light intensity caused by selective cutting, which creates small gaps with insufficient light for pioneer. Contrary to this, the gap opportunists may get the chance to establish themselves in the logged-over stands.

Considering the recruitment of saplings, selective cutting still gives stimulus to sapling density as seen at LoA 7 and LoA 9. Looking at the number of sapling of climax species, there is a remarkable increase in the number of saplings from plot LoA 1 to LoA 3. There is a slight increase to LoA 5 and significantly increases to LoA 7 and then a decrease to LoA 9. According to Wyatt-Smith (1963) the seedlings regeneration is considered sufficient if availability of seedlings is 1000 per ha. All plots of this study have more than 1000 seedlings per ha. Table 5 shows the regeneration at the saplings level exceeds 240 saplings per ha.

In general it can be said that the density of climax species at all levels of regeneration is greater compared to the pioneer species. The results showed that the density at the trees level was still dominated by climax species with the proportion reaching 55% to 84%. For the poles level, the presence of climax species is still dominant, about 47% to 73%. As for the level of saplings, the existence of climax and pioneer species are still relatively balanced. It is interesting the dominant existence of climax species at the seedlings level, about 56% to 83%.

Silvicultural system of selective cutting and line planting system (SCLP) of the logged-over forest has proved to increase the residual trees. As reported by Pamoengkas (2010), the growth of pole has increased the total residual trees in large quantities.

In our study, as result from selective cutting of the overstory, it is expected the creation of numerous canopy openings, increased light availability and changing in the species composition. This finding in line with the research conducted by Griffis et al. (2001) and Angers et al. (2005), who stated that enhancing light availability induces advance regeneration and changes coverage in the understory, even the species richness of understory layer.

3.2. Stand structure

Figure 4 shows that the climax species is more dominant compared to the group of pioneer species, except at LoA 9 and LoA 1. It was due to the maintenance activities, i.e. widening of planting line to support plant growth. Widening the distance of planting line results in canopy openness and improves the penetrating light, thus increasing the plants growth rate.

Figure 4 Distribution of stand structure. 

Distribution of stand structure for pioneer and climax species of the entire observations plots tends to follow inverted J curve shape. This result indicates that uneven-aged species composition of the logged-over forests that applied the silvicultural system of selective cutting and line planting system (SCLP) showed a stable condition. The density of smaller diameter trees is relatively high; while the density of larger diameter tree is relatively lower. The condition of the normal forest stand structure of the logged-over forest followed inverted J shape curve corresponds to a balance of residual stand for the next rotation.

3.3. Index of species diversity

The index values for species diversity of tree and regeneration at the entire observation plots can be seen at Table 6.

Table 6 Index of species diversity on the observation plots. 

Strata Index of Diversity (H')
GPCA LoA 9 years LoA 7 years LoA 5 years LoA 3 years LoA 1 years
Seedlings 3.5 3.2 3.7 3.1 3.2 3.4
Saplings 3.8 3.3 4.1 3.5 3.7 3.6
Poles 3.8 3.2 3.5 3.0 3.5 3.0
Trees 4.0 3.5 3.7 3.4 3.4 3.3

Table 6 shows that the index at all stages have values > 3. It indicated that species tree diversity and regeneration stands were considered high. This is in accordance with a study carried out at the same location by Utami (2007), who found that the species diversity in that location is quite high. The result of her study showed that the species composition in all stages were very abundant, diverse or heterogeneous. In addition, community species were relatively stable. Community stability refers to the ability of communities to remain unchanged over time. It can be said that the implementation of selective cutting in managing the natural forest in Indonesia still refer to close to nature forestry approach in which the effect of selective cutting on the existing of climax species still can be tolerated.

3.4. Important Value Index (IVI)

This index is used to determine the overall importance of each species in the community or the observation plots. The dominant species is the one that utilizes the environment more efficiently than other species in the same community. The dominant species has the highest IVI. A species is considered to play a role if its IVI is ≥ 10% for seedlings and saplings stage, whereas for poles and trees stage it is ≥ 15% (Sutisna, 1981).

Table 7 shows that climax species such as those from the group of Dipterocarpaceae dominated at tree level on the entire observation plots. Dominant species was Shorea parvifolia with the highest Important Value Index in five of the six observation plots. After, Shorea laevis with Index rate dominant in three of the six observation plots. In the Dipterocarpaceae group, the meranti species (Shorea spp) are the most important ones. This group also has a high IVI.

Table 7 Important Value Index above 15% of the tree level in the observation plots. 

Species Group IVI
GPCA LoA 9 years LoA 7 years LoA 5 years LoA 3 years LoA 1 years
Castanopsis costata C - - 22.3a 22.8b - -
Cephalomappa mallotocarpa P - - - - - 23.9b
Dacryodes rugosa P - - - - - 22.7
Dipterocarpus caudiferus. C - - - - 17.2 -
Hopea dryobalanoides C - 16.8 - - - -
Koompassia malaccensis C - - - - - 15.3
Pternandra caerulescens P - - 16.0 - - -
Scorodocorpus borneensis C - - - - - 19.0
Shorea laevis C - 36.0a - 16.7 22.5b -
Shorea parvifolia C 18.4a - 18.2b 34.3a 40.4a 43.1a
Shorea smithiana C - 17.4b - - - -
Symplocos cochinchinensis P - - - - - -
Syzygium borneense C - - - 19.4 16.7 21.2

C = Climax; P = Pioneer;

aDominant species;

bCo-dominant species.

Table 8 shows the important value index at pole stage. It consists of 14 climax and 10 pioneer species. Syzigium borneense showed well distributed at area of five years after cutting (LoA 5, LoA 3 and LoA 1). This species is well adapted at half of all plots. Hopea dryobalanoides, as one of the Dipterocarps group well distributed at half of the total plots. By contrast, the other group of Dipterocarps, such as Shorea parvifolia, Shorea macrophylla, Shorea pauciflora, and Shorea smithiana distributed only at one-sixth of all plots. In general, one can say that climax species at pole stage still dominate the logged-over area, except at the area of one year after cutting (LoA 1), in which the pioneer species are dominant.

Table 8 Important value index above 15% of poles in the observation plots. 

Species Important Value Index
GPCA LoA 9 years LoA 7 years LoA 5 years LoA 3 years LoA 1 years
Antidesma coriaceum P 15.2b - - - - -
Aporosa sphaeridophora P - - - - - 28.3a
Castanopsis costata C - - 18.3 - - -
Chisocheton sp P - 16.6 - - - -
Dacryodes rugosa P - 19.0 - - - 25.3b
Dehaasia caesia P - - - - - 24.6
Diospyros rostrate C - - - 18.8 - -
Hopea dryobalanoides C - 23.4b - 23.8 - 16.0
Ilex accuminata C - - - - 15.3 -
Litsea machilifolia C - - - - 21.3b -
Macaranga gigantea P - - 22.2a - - -
Macaranga hypoleuca P - 40.2a - - - -
Paranephelium xestophyllum C 16.3a - - - - -
Polyalthia xanthopetala P - - - 15.9 - -
Pternandra caerulescens P - - - - - 16.8
Scorodocorpus borneensis C - - - - - 16.6
Shorea macrophylla C - - - 15.4 - -
Shorea parvifolia C - - - - - 20.1
Shorea pauciflora C - - 16.5 - - -
Shorea smithiana C - 19.8 - - - -
Strombosia ceylanica C - - - 15.0 - -
Symplocos cochinchinensis P - - - 30.6b - 17.0
Syzygium borneense C - - - 48.6a 27.9a 25.1
Syzygium sp C - - 21.4b) - - -

C = Climax; P = Pioneer;

aDominant species;

bCo-dominant species.

The dominant species for seedlings and saplings stage are presented at Tables 9 and 10. As already discussed previously, at pole stage Syzygium borneense showed the highest seedling important value index and occurred in one-third of all plots. Dipterocarps group was found also at young logged-over forest, namely LoA 1, LoA 3 and LoA 5. The three highest IVI level were 26.2% for Syzigium borneense, 23.2% for Vatica nitens as representative of climax species, and 21.0% for Chisocheton sp for pioneer species. In general, each species does not dominate evenly on each observation plots, but they occurred in one to three of all plots.

Table 9 Important value index above 10% in the regeneration of trees (seedlings) in the observation plot. 

Species Group Important Value Index
GPCA LoA 9 years LoA 7 years LoA 5 years LoA 3 years LoA 1 years
Antidesma coriaceum P - 12.7 - - - -
Chisocheton sp P - 21.0a - - - -
Diospyros rostrata C - - - 13.8 - -
Gluta wallichii C - 18.5b - - - -
Hopea dryobalanoides C - 14.8 - - - -
Coompassia malaccensis C - - - 10.0 - -
Madhuca erythrophylla C - - - - - 13.0
Memecylon edule P - - - - - 13.6b
Pternandra caerulescens P - - 11.7b - 16.2b -
Shorea acuminatissima C 20.1a - - - - -
Shorea laevis C - 14.2 - - - -
Shorea parvifolia C 10.5b - - - 10.5 20.4a
Shorea pauciflora C - - - 17.8b - -
Shorea smithiana C - - - - 11.5 -
Syzygium borneense C - - - 13.7 26.2a -
Trigonostemon sp P - - 14.8a - - -
Vatica nitens C - - - 23.2a - -

C = Climax; P = Pioneer;

aDominant species;

bCo-dominant species.

Table 10 Important value index above 10% in the regeneration of trees (saplings) in the observation plots. 

Species Group Important Value Index
GPCA LoA 9 years LoA 7 years LoA 5 years LoA 3 years LoA 1 year
Antidesma coriaceum P - 12.3 10.4 12.0 - 11.2
Gluta wallichii C - 13.3b - - - -
Hydnocarpus kunstleri C - - 11.7a - - -
Macaranga hypoleuca P - - - 15.8a - -
Madhuca erythrophylla C - - - - - 11.9b
Paracroton pendulus P - - - - 10.1a -
Polyalthia anthopetala P - - - 12.4b - -
Shorea laevis C - 13.1 - 10.8 - -
Shorea parvifolia C - - - - - 14.5a
Symplocos cochinchinensis P - 25.6a - - -

C = Climax; P = Pioneer;

aDominant species;

bCo-dominant species.

Table 10 shows that at sapling stages of pioneer species at the logged forest the dominants were Symplocos chocinchinensis (25.6%) and Macaranga hypoleuca (15.8%). Antidesma coriaceum of pioneer species were the most dominant group in four of the six observation plots. But there was no dominant sapling stage for GPCA. In general it can be said that, in the seedlings and saplings stage, no species was particularly common at the logged-over area, or it did not show a consistent trend.


In general, the proportion of the number of climax species in the entire observation plots is greater compared to the pioneer species. As regards for regeneration of seedlings, saplings, and poles, climax species is dominant compared to pioneer species. From the viewpoint of diameter class distribution of climax species and pioneer species, the logged over forests have characteristic of balanced un-even aged forests. Individual selective cutting with diameter limit have not significantly affected the climax species.


This study was supported by Forest Concession Right PT. Sarpatim, Central Kalimantan, Indonesia. They provided the forest areas and labor support to conduct the research. The authors would like to express their sincere thank for the support.

FINANCIAL SUPPORT This study was funded by Forest Concession PT. SARPATIM at Central Kalimantan, INDONESIA.


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Received: October 25, 2017; Accepted: July 11, 2018

Prijanto PamoengkasDepartment of Silviculture, Faculty of Forestry, Bogor Agricultural University – IPB, Campus IPB, Km, P.O Box 168, 16680, Darmaga, Bogor, Indonesia e-mail:;

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