scholarly journals Keanekaragaman Potensi Regenerasi Vegetasi pada Hutan Rawa Gambut: Studi Kasus di Kawasan Hutan Dengan Tujuan Khusus (KHDTK) Tumbang Nusa, Kalimantan Tengah

2017 ◽  
Vol 11 (2) ◽  
pp. 224 ◽  
Author(s):  
Dony Rachmanadi ◽  
Eny Faridah ◽  
Peter J Van Der Meer
Keyword(s):  
Natural Regeneration ◽  
Similarity Index ◽  
Seed Rain ◽  
Species Number ◽  
Regeneration Potential ◽  
Swamp Forest ◽  
Edge Zone ◽  
Peat Swamp Forest ◽  
Seedling Bank ◽  
Peat Swamp

Degradasi ekosistem hutan termasuk hutan rawa gambut umumnya diwakili oleh degradasi tutupan vegetasi. Degradasi hutan cenderung mengikuti gradien jarak dari tepi hutan menuju ke dalam hutan. Tujuan dari penelitian adalah untuk mengetahui keanekaragaman dan dominasi potensi regenerasi alami di hutan rawa gambut di Kalimantan Tengah. Anakan alam, guguran buah, dan biji yang tersimpan di lapisan tanah sebagai indikator potensi regenerasi alami diukur dari serangkaian plot terletak mengikuti gradien jarak. Hasil penelitian menunjukkan perbedaan potensi regenerasi alami mengikuti gradien jarak secara signifikan. Keragaman potensi regenerasi alami cenderung menurun mengikuti gradien gangguan, di mana yang terendah ditemukan di tepi hutan. Anakan alam di tepi didominasi oleh Combretocarpus rotundatus (Miq.) Danser sementara Litsea oppositifolia L.S. Gibbs mendominasi di bagian dalam. Guguran buah didominasi oleh Combretocarpus rotundatus di semua gradien jarak pada musim kemarau, sementara itu Palaquium sp. mendominasi gradien dalam hutan dan Combretocarpus rotundatus mendominasi gradien tepi hutan selama musim pancaroba. Hal ini menunjukkan bahwa musim memberi efek signifikan pada jumlah biji, jumlah spesies, dan keanekaragaman guguran buah, dan ketiga indikator potensi regenerasi ternyata lebih tinggi selama musim pancaroba. Biji di lapisan tanah didominasi oleh Tristaniopsis obovata (Benn.) Peter G. Wilson & J.T. Waterh di gradien dalam hutan dan Diospyros sp. di gradien tepi. Namun, biji di lapisan tanah di gradien tepi ini merupakan jenis yang menyusun pada gradien dalam hutan (50% indeks kesamaan). Hal ini menunjukkan bahwa penyebaran benih dari hutan sebagai sumber inokulum masih bisa mencapai tepi dan juga menunjukkan bagaimana kehadiran vegetasi di gradien tepi sebelum terjadi gangguan.Kata kunci: anakan alam; biji di lapisan tanah; gradien jarak; guguran buah; hutan rawa gambut Potential Diversity of Natural Regeneration in Peat Swamp Forest: A Case Study at Forest for Specific Purpose (KHDTK) Tumbang Nusa, Central KalimantanAbstractDegradation of forest ecosystem including peat swamp forest is generally represented by the degradation of its vegetation cover. Forest degradation tends to follow edge-to-interior distance gradient. This study aimed to determine the diversity and dominance of natural regeneration potential in peat swamp forest at Central Kalimantan. Seedling bank, seed rain, and seed soil bank as the indicators of natural regeneration potential were measured from series of plots located following the distance gradient. The results showed that the difference in natural regeneration potentials followed the distance gradient significantly. The diversity of natural regeneration potential tends to decrease following disturbance gradient, where the lowest was found near the edge. Seedling bank at the edge was dominated by Combretocarpus rotundatus (Miq.) Danser while Litsea oppositifolia L.S. Gibbs dominated at the interior. The seed rain was dominated by Combretocarpus rotundatus at all sites during dry season while during intermediate season, Palaquium sp. dominated the interior and Combretocarpus rotundatus near the edge. It was showed that climatic season gave significant effects on seed number, species number, and diversity of seed rain in which all the three regeneration indications were higher during intermediate season. The seed soil bank was dominated by Tristaniopsis obovata (Benn.) Peter G. Wilson & J.T. Waterh near to the interior and by Diospyros sp. at the edge. However, seed soil banks at the edge zone were dominated by species composing the interior forest (50% similarity index). This shows that the seed dispersal from forest as inoculum source can still reach the edge and also indicates existing vegetation at the edge prior to disturbance.

scholarly journals KEANEKARAGAMAN JENIS TUMBUHAN PAKU-PAKUAN (PTERIDOPHYTA) DAN KONDISI TEMPAT TUMBUHNYA PADA HUTAN RAWA GAMBUT SEKUNDER DAN LAHAN GAMBUT TERBUKA

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Furwoko Kirno ◽  
Dwi Astiani ◽  
Hanna Artuti Ekamawanti
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Similarity Index ◽  
Survey Method ◽  
Site Conditions ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Plot Size ◽  
Peat Swamp ◽  
Index Value

The activities of the community around the peat swamp forest cause disruption of the ecosystem from the sustainability of the forest area's resources. Land clearing and peatland fires also affect the presence of ferns. The new environmental conditions due to changes in land cover cause ferns to be affected by these changes. Kuala Dua Village Kubu Raya Regency has secondary peat swamp forest and open peat land due to fires 3-4 years earlier so it is overgrown with a variety of new types of flora, one of which is a type of fern. The objective of the study is to describe species diversity of ferns and their site conditions in secondary peat swamp forests and open peatlands of Kuala Dua Village, Kubu Raya District. This research was conducted with survey method using multiple plot samples. The plots determination was done by purposive sampling which was taken place on the site where there were many species of ferns land. Three plots were on each land covered condition with a plot size of 5 m x 5 m that divided into 25 of a 1 m x 1 m sub plots. The results show that 5 species of ferns found in peat swamp forest and 4 species of ferns were found on open peatlands. The species that has the highest INP value in the forest was Asplenium belangeri and the species that has the INP value in open peatland was Nephrolefis falcata. Dominant Index, Spesies Diversity Index and Spesies Abudance Index were 0,12 and 0,18; 0,30 and 0,36; 0,51 and 0,52 on the forest and open peatland respectively. The Similarity Index value (IS) of ferns in secondary peat swamp forest and open peatland is 44%. The study shows dissimility of species fern in peat swamp forests and open peatlands.Keywords: Open peatland, Pteridophyta, secondary peat swamp forest

scholarly journals FLORISTIC COMPOSITION AND STRUCTURE OF A PEAT SWAMP FOREST IN THE CONSERVATION AREA OF THE PT NATIONAL SAGO PRIMA, SELAT PANJANG, RIAU, INDONESIA

REINWARDTIA ◽  
2014 ◽  
Vol 14 (1) ◽  
pp. 193 ◽  
Author(s):  
Yusi Rosalina ◽  
Kuswata Kartawinata ◽  
Nisyawati Nisyawati ◽  
Erwin Nurdin ◽  
Jatna Supriatna
Keyword(s):  
Diversity Index ◽  
Strong Association ◽  
Similarity Index ◽  
Floristic Composition ◽  
Primary Forest ◽  
Conservation Area ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
Composition And Structure

We studied the floristic composition and structure of the logged-over peat swamp forest in the  PT National Sago Prima of PT Sampoerna Agro Tbk. group for future management of the conservation area that has been  set aside by the company.  In January - February 2012, 25 quadrats of 20 m x 20 m were laid out systematically along a transect,  thus covering a sampled area of 1-ha.  The results showed that the study site was a regenerating and developing secondary peat swamp forests having high plant species richness.  The total number of species recorded was 73 species of 38 families, consisting of 49 species (30 families) of trees (DBH? 10 cm ), 42 species (24 families) of saplings (H > 1.5 m and DBH < 10 cm), and 41 species (27 families) of seedlings and undergrowth.  Tree density was 550 individuals/ha, and total tree basal area was 18.32 m2. The Shannon-Wiener’s Diversity Index for trees was high  (3.05)  Two tree species with the highest Importance Values (IV) were Pandanus atrocarpus (IV= 45.86 %) and Blumeodendron subrotundifolium (22.46  %).  The tree families with the highest IV were Pandanaceae (45.86), Myrtaceae (40.37), and Dipterocarpaceae (39.20). Forest structure dominated by trees with a diameter below 20 cm amounting to 408 trees/ha (74.05%). and  D and E strata with height of less than 20 m, and density of 431 trees/ha (78.36%). Jaccard Similarity index among species, showed  strong association between Pandanus atrocarpus and Blumeodendron subrotundifolium  and based on this association combined  with high IVs, the two parameters of species  characterized the forest, hence the forest could be designated as the Pandanus atrocarpus--Blumeodendron subrotundifolium association. Primary forest species with high economic values were still present in the forest. Eleven species can be included in the IUCN Red List, of which Shorea rugosa is in the category of Critically Endangered), Shorea tesymanniana Endangered and  Gonystylus bancanus vulnerable, hence they should  be protected.

Temporal variations in soil–atmosphere methane exchange after fire in a peat swamp forest in West Siberia

2006 ◽  
Vol 52 (1) ◽  
pp. 77-88 ◽  
Author(s):  
Tomoko Nakano ◽  
Wataru Takeuchi ◽  
Gen Inoue ◽  
Masami Fukuda ◽  
Yoshifumi Yasuoka
Keyword(s):  
West Siberia ◽  
Temporal Variations ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
Soil Atmosphere

Surface peat structure and chemistry in a tropical peat swamp forest

2014 ◽  
Vol 382 (1-2) ◽  
pp. 329-347 ◽  
Author(s):  
Maija Lampela ◽  
Jyrki Jauhiainen ◽  
Harri Vasander
Keyword(s):  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Tropical Peat ◽  
Peat Swamp ◽  
Tropical Peat Swamp Forest ◽  
Surface Peat ◽  
Tropical Peat Swamp

ISOLATION OF BACTERIA FROM THE ACIDIC PEAT SWAMP FOREST SOIL AND THEIR LIGNIN DEGRADATION POTENTIAL

2015 ◽  
Vol 77 (24) ◽  
Author(s):  
Muhamad Aidilfitri Mohamad Roslan ◽  
Nur Azam Amirudin ◽  
Zaima Azira Zainal Abidin ◽  
Suhaila Mohd Omar
Keyword(s):  
Agricultural Land ◽  
Sequence Similarity ◽  
Common Species ◽  
Peninsular Malaysia ◽  
Sampling Location ◽  
Water Medium ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
Rdna Sequencing

The tropical peat swamp forest in Malaysia has reduced significantly due to increasing pressure for development and demand for agricultural land. Pekan peat swamp forest is part of the 200,000 hectares of peat swamp forest located in Pahang, Peninsular Malaysia. While more extensive studies were done on flora and fauna, the study on microbial diversity in this habitat is very limited. The highly acidic environment, low concentrations of nutrients and anoxic condition of the peat are among challenges that hampered the cultivation of microorganism from this environment. In this study two types of agar-based medium, M1 minimal medium (M1) and peat water medium (PW) supplemented with glucose, methanol and lignin were used to isolate bacteria from the peat sediment. In comparison to M1, the use of PW has resulted with higher number of isolates with different morphologies. The PW mainly contains the acidic peat water that was collected from the sampling location. Based on the growth on medium supplemented with lignin, selected isolates were identified using 16s rDNA sequencing. At least three of the isolates showed sequence similarity to Burkholderia sp., which is one of the common species, studied on their ligninase-producing abilities. The results from this study serve as the preliminary data for further work on growth characteristics and enzymatic potential of isolates from acidic peat swamp soil.

Controlling CO2 and CH4 Emission in a Degraded Peat Swamp Forest Related to Water Table and Peat Characteristics

2013 ◽  
Vol 391 ◽  
pp. 202-206
Author(s):  
Leila Kalsum ◽  
null Ngudiantoro ◽  
M. Faizal ◽  
A. Halim Pks
Keyword(s):  
Water Table ◽  
Forest Fires ◽  
Ash Content ◽  
Burned Area ◽  
Gas Temperature ◽  
Swamp Forest ◽  
Closed Chamber ◽  
Peat Swamp Forest ◽  
Peat Swamp

This study focuses on factors controlling CO2and CH4emission in a peat swamp forest related to water table and peat characteristics such as peat depth, C-organic, pH, ash content and N-total. This study was conducted in the dry season at a Merang peat swamp forest that has degraded due to logging activities, forest fires and canal opening. Emission of CO2and CH4was measured by using a closed chamber made by PVC material (60 cm x 60 cm x 40 cm). This close chamber was completed with a fan inside the chamber to stir the gas, a thermometer inside the chamber to measure the gas temperature and a syringe to sample gas. This study has shown that the highest CO2emission is at an average of 438.93 mg/m2/hr occurring in land cover type (1) ferns and grasses (open burned area) and the lowest is at average of 44.45 mg/m2/hr in thegelamandbelidang-dominated land. The emission of CH4is very low between 0.0018 to 0.0069 mg/m2/hr. the main controlling factor on CO2and CH4emission is concluded to be the water table. The emission of CO2will be greater if water table, pH and C-organic increase.

scholarly journals KEANEKARAGAMAN JENIS JAMUR MAKROSKOPIS PADA BERBAGAI KONDISI TEMPAT TUMBUH HUTAN RAWA GAMBUT DI KAWASAN HUTAN DENGAN TUJUAN KHUSUS UNIVERSITAS TANJUNGPURA

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
Syapriadi Utama ◽  
Dwi Astiani ◽  
Wiwik Ekyastuti
Keyword(s):  
Canopy Cover ◽  
Sampling Technique ◽  
Forest Products ◽  
Data Retrieval ◽  
Survey Method ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Plot Sampling ◽  
Peat Swamp ◽  
Open Canopy

Tanjungpura University Forest for Special Purpose located in three districts Landak Regency, Mempawah Regency and Kubu Raya Regency. Has the potential to use and process non-timber forest products. The diversity of macroscopic fungi is not yet known as one of the potential natural biological resources of significant value. So that a mushroom inventory must be carried out to identify and assess the diversity of macroscopic fungi. The method used is the survey method. Data retrieval uses a double plot sampling technique. The size of each observation plot is 5 m × 5 m as the initial reference, four plots in the peat swamp forest area with open canopy cover conditions and also four observation plots in peat swamp forest areas with canopy cover conditions are still closed. Placement of research plots in both areas was carried out purposively in locations where there were many types of macroscopic fungi. The results showed that the types of macroscopic fungi found at the study site were 24 species. 24 species were divided into 594 individuals belonging to 23 genera and 9 families. Macroscopic fungi found in open canopy cover were found in 17 species, while in closed canopy cover there were 13 species. In both types of conditions the place to grow has the same 6 types of fungi. The degree of diversity of macroscopic fungi in various conditions the peat swamp in Tanjungpura University Forest for Special Purpose is low.Keyword: Macroscopic fungi, peat swamp forest, Tanjungpura University Forest for Special Purpose.

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