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PENGARUH TINGGI MUKA AIR TANAH TERHADAP BEBERAPA SIFAT FISIK DAN KIMIA TANAH GAMBUT DI DESA KUALA DUA KABUPATEN KUBU RAYA Simatupang, Darbin; Astiani, Dwi; Widyastuti, Tri
JURNAL HUTAN LESTARI Vol 6, No 4 (2018): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v6i4.30284

Abstract

Peatland is the result of organic matter accumulation from the decaying vegetation with naturally occuring through long term decomposition processes. The purpose of this study was to gain the information about the effect of water table level on some peatland chemical and physical properties of Kuala Dua village, Kubu Raya regency. The method used in this study was experiment al study the soil samples on 3 (three) water table levels were while examinated. Experimental study with completely randomized design using soil sampels of three water table levels 30 cm, 50 cm, and 80 cm with three replication. The result of this study showed that the depth 0-40 cm of water table level had the range values of soil water contents (397,3-460,5%), soil bulk density (0,18-0,25g/cm3), cation exchange capacity (116,4-118,4 mEq), soil organic carbon (56,8-57,5%), nitrogen (1,89-1,91%), soil phosporus (38,84-267,17%), soil humidity (8,2-9,9 %RH), soil potential hydrogen (3,04-3,17) and soil temperature (27,3-29,3ËšC). Base on the results, soil temperature and soil humidity were effected by peatland water table level, while the others properties were not impacted.Keywords : chemical properties, peatland, peatland managemen, physical properties
KEANEKARAGAMAN JENIS ANGGREK ALAM EPIFIT PADA BERBAGAI TUTUPAN TAJUK HUTAN DI DESA BALAI SEBUT KABUPATEN SANGGAU Sudarso, Dunatus; Astiani, Dwi; Ekamawanti, Hanna Artuti
JURNAL HUTAN LESTARI Vol 8, No 1 (2020): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v8i1.39393

Abstract

Epiphytic orchids can be found living naturally in the tropical rainforest. Destruction or degradation of forest area in Balai Sebut District Sanggau Regency due to caused degradation of canopy cover. This condition may affect microclimate which than impacts at the presence of species, one of which is epiphytic orchids that grow naturally in the forest. This study used a survey method with purposive double plot sampling for 1 month (28 Mei – 21 July 2019) in the field. Observation plots were made with a size of 20 x 50 m with a total of 12 plots. The results showed that there where 32 types of epiphytic orchids with a total of 431 individuals. At closed forest canopy cover and had been accomplished (>70%) can be 16 species of orchids with 220 individuals, at forest canopy (50-70%) can be 25 species of orchids with 159 individuals, can be at open forest canopy cover (50%) there were 10 species of orchids with 52 individuals. The dominant orchids species in the three canopy cover Flikingeria bicostata with Celogne peltastes.Keywords: closed forest canopy, epiphytic orchids, medium and open forest canopy, species diversity.
SEBARAN POPULASI DAN KONDISI TEMPAT TUMBUH BUNGA BANGKAI (AMORPHOPHALLUS SP) DI KAWASAN HUTAN KOTA GUNUNG SARI KOTA SINGKAWANG Saragih, Edi Semjaya; Astiani, Dwi; Sisillia, Lolyta
JURNAL HUTAN LESTARI Vol 4, No 3 (2016): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v4i3.15816

Abstract

Urban forest is one component of green open spaces in a city. The existence of anurban forest serves in a hydrological system, creating a micro-climate, maintaining the balance of oxygen (O2) and carbon dioxide (CO2), reducing pollutants, and noises. Diversity of flora in urbant forest of Gunung Sari is not yet known for their distribution and the number of species. One of the flora that have not yet registered in term of their distribution and diversity isCarrion flower  (Amorpophallus sp). The purpose of this study was to determine the distribution and site condition of Amorphophallus, which found in the urban forest of Gunung Sari. The research was done by applying survey methods using transects withdirection perpendicular to contour lines. Data assessment of Carrion flower was surveyed using a 20 x 20 mcontinuous plots(10 m left and right side of transects) and 8 transectschosen were assumed torepresentthe entire urban forest conditions. Each transect length was500- 700 m. Only one species of carrion flower found, Amorphophallus hewittii Aldrew. Morista index analysis show that the pattern of distribusion of A. hewittii were found in a group, with the the index of 1.60. The Carrion seedling density was greater than the rate of adult density.Regression analysis resulted a relationship between the density of A. hewittii andlight intensity where it grown. The higher the intensity of incoming light in the forest of floor, the population A. hewittii was reduced. Keywords : Urban forest of Gunung Sari, habit, Amorphophallus.
PENDUGAAN STOK KARBON DI KAWASAN HUTAN PENDOPO GUBERNUR KOTA PONTIANAK Baruna, Tomi; Astiani, Dwi; Darwati, Herlina
JURNAL HUTAN LESTARI Vol 5, No 2 (2017): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v5i2.20527

Abstract

Forest is a natural resource that is very important and beneficial for life and living either directly or indirectly. This study aims to determine how much carbon is stored, in the area of Forest City Hall Governor Pontianak. The method used in this study, is non-destructive sampling method with recording the diameter of all the trees on the track 20 m wide and 100 m long using allometric  equation appropriate for estimating biomass. Based on  the research results of carbon estimation stored in Governor City Hall Forest  area with 3.2 ha area there are 38 species of trees with the number of 584 individuals, biomass about 140.62 tons/ha, while for carbon stock from stands about 70.27 tons/ha. Keywords: carbon stock, forest city
KEHILANGAN BIOMASSA GAMBUT AKIBAT KEBAKARAN HUTAN Wiri, .; Astiani, Dwi; Fernando, Togar
JURNAL HUTAN LESTARI Vol 5, No 3 (2017): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v5i3.21713

Abstract

Peat land is a wetland / water-saturated area composed of organic soil material, namely the remains of plants and plant tissue decaying with a thickness of more than 50cm comprising organic materials, either with a thickness of more than 45cm or layered together with mineral soil with thickness of 80cm and have a thick layer of organic material is more than 50cm. Peat serves as a repository of highest carbon reserve after a very large tree. Additionally peat has a role in the ecosystem of peatlands both in terms of hydrology, conservation of wildlife and vegetation. Kuala Dua Village in Kubu Raya has a fairly extensive peatlands with a depth of 1-4 meters. Fire is a phenomenon that often occurs in Kuala Dua Village including peat fires. The fires emit carbon that contribute to the increase of greenhouse gases (GHGs) into the atmosphere. So there is a need to do research on "Measuring the Loss of peat Biomass in the area of peat fires in Kuala Dua Village, Kubu Raya Regency". This study aims to measure the content of peat biomass lost due to forest fire in the village of Kuala Dua Raya campus. The method used was a survey method, and to determine the location of the observations was done intentionally (purposive sampling) with the measurement plot. In total there were 10 sampling plots with a size of 5m2 / plot and has 25 subplots / plots with a size of 1m2. Identification of the amount of peat biomass loss was done by measuring the distance from the peat surface of the sampling plot based on the volume of burnt peat method by Agus, et al (2011). The total volume of peat burnt in research plots was calculated in the amount of 39.14 kg / m3 with changes the depth of peat soil surface. The decrease was an average reduction of around 0.621m peat surface. The amount of peat biomass loss due to forest fires during research in the peat area of Kuala Dua Village amounted to 3379.47 kg / m3.Keywords : Carbon Emissions, Forest Fires, Peat Biomass and Kuala Dua Village
PERSEPSI MASYARAKAT TERHADAP KEBERADAAN HUTAN MANGROVE DI DESA SUNGAI KUPAH KECAMATAN SUNGAI KAKAP KABUPATEN KUBU RAYA Ningsih, Rahayu Setya; Roslinda, Emi; Astiani, Dwi
JURNAL HUTAN LESTARI Vol 8, No 2 (2020): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v8i2.40357

Abstract

People’s perception on mangrove forest is one form of mangrove responses concerning the function and benefits of mangrove ecosystems including physical, biological, chemical, economic and social benefits. One of example mangrove forests  is  Sungai Kupah village, Sungai Kakap subdistrict, Kubu Raya district. This study aims to understand people’s perceptions of the mangrove forests in the Sungai Kupah village and to understand the relationship between perceptions of the individual factors of age, education, knowledge, cosmopolitan levels, income levels, and dependability. The research uses the survey method and analyzed with Kendall tau’s correlation and descriptive analysis. People’s perception on mangrove forests in the Sungai Kupah village it’s positively inclined, which is 51,14%. Knowledge factor have a significant positive correlation; Education, income, cosmopolitan and dependency factors are low in their positive correlations; While age and distance factors tend have a negative insignificant correlation with people’s perception of mangrove forests in the village of the Sungai Kupah. The perception can be used as a reference to bringing communities into further mangrove.Keywords : Communities, individual factors, mangrove forests, perception, qualitative data
KEANEKARAGAMAN JENIS TUMBUHAN PAKU-PAKUAN (PTERIDOPHYTA) PADA BERBAGAI UMUR LAHAN GAMBUT BEKAS KEBAKARAN DI DESA RASAU JAYA UMUM KABUPATEN KUBU RAYA Kurniawati, Ella; Astiani, Dwi; M, Iskandar A
JURNAL HUTAN LESTARI Vol 7, No 2 (2019): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v7i2.33060

Abstract

The burning activity of peatlands in Kubu Raya Regency could kill various types of vegetation, one of which is ferns (Pteridophyta). Research on the species diversity of ferns needs to be execausted to obtain information or about the composition of the ferns species that present in peat ex-burn peat lands. This research was carried out at various ages sites (1, 2, 3 and 4 years) of ex-burn peat lands in Rasau Jaya Umum Village, Kubu Raya Regency. This study applyed survey metode with double plot technique, Plot laying using a purposive sampling methode, plot size was 5 x 5 m divided into 25 sub-plots of 1 x 1 m size.Three repetations were aplly made on each site. The results showed that on 1 year old ex-burn site were found 4 ferns species, paku ribu ribu (Lygodium microphyllum Cav.R.Br) paku cenceran (Neprolefis falcata Cap. C.Chr) paku lemiding (Stecchlanaena palustris Burm Bedd) and  paku resam (Gleichenia linearis Burn Clarke) and 2,3,4, years old ex-burn peatland 3 species of ferns were found, namely paku cenceran (Neprolefis falcata Cap. C.Chr) paku lemiding (Stecchlanaena palustris Burm Bedd) and  paku resam (Gleichenia linearis Burn Clarke). From the results of the study concluded that the diversity of species of ferns at various ages (1, 2, 3 and 4 years) of ex-burn peatlands in Rasau Jaya Umum Village, Kubu Raya Regency were not relatively similiar.Keywords: ex-burn peat land, fern, species diversity.
JENIS-JENIS POHON PENYUSUN VEGETASI HUTAN RAWA GAMBUT DI SEMENANJUNG KAMPAR KECAMATAN TELUK MERANTI PROVINSI RIAU Ripin, .; Astiani, Dwi; Burhanuddin, .
JURNAL HUTAN LESTARI Vol 5, No 3 (2017): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v5i3.21709

Abstract

Peat swamp forest in Semenanjung Kampar Riau is a unique ecosystem because it  has a huge plant diversity and high diversity species. The decreasing of natural forest cover on peat swamp forest Semenanjung Kampar was influenced illegal-logging activities. The purpose of  this study was to identify the tree species of peat swamp forest vegetation in  Semenanjung Kampar Teluk Meranti sub-district Riau. The method used in this research was survey purposive determination starting poin. The survey consisted of 5 transect that length at 2 km. The results showed that trees species found in Semenanjung Kampar was 70 trees species, that were classified into 38 famili. Dipterocarpaceae was found with the highest number of species which were Anisoptera marginata Korth, Shorea platicarpa Heim, Shorea teysmanniana Dyer ex Brandis, Shorea uliginosa Foxw, dan Vatica teysmanniana Burck. Overall, the research showed that the peat swamp forest at Semenanjung Kampar is in a good state and to be maintained.Keywords : Dipterocarpaceae, Diversity species, Identification, Peat Swamp Forest.
KEANEKARAGAMAN JENIS DAN KONDISI TEMPAT TUMBUH KANTONG SEMAR (Nepenthes spp.) DI KAWASAN HUTAN GUNUNG SELINDUNG DESA TWI MENTIBAR KECAMATAN SELAKAU KABUPATEN SAMBAS Gusdiarto, .; Astiani, Dwi; Herawatiningsih, Ratna
JURNAL HUTAN LESTARI Vol 6, No 2 (2018): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v6i2.25944

Abstract

There is a complex vegetation structure that creates a different living environment and has its diverse plant species, habitat of plants in tropical rain forest is one of them. This forest has its rich in terms of flora species in Indonesia, one of them is Nepenthes spp. Nepenthes spp. is a unique plant that grows in forests. Its diverse colors and forms make it as an ornamental plant with high economic value. The aim of this study is to determine the variety of Nepenthes spp. and to assure the condition of the place where it grows in natural forest. This research was conducted by using field survey method, with multiple plot. Plot placement on the field was done with purposive sampling. Based on results of the research of secondary forest it is found three types of Nepenthes spp. The species found in this secondary forest are Nepenthes mirabilis Druce, Nepenthes ampullaria Jack and Nepenthes reinwardtiana Miq. These 3 species found with each density of 318, 89 and 636 m/ha, each dominance index is <1. The micro climate ranges result on the habitat are, the air temperature: 16.67 0C - 24,67 0C, humidity: 65,33% - 70,33%, soil temperature: 250C - 26,6 0C, soil moisture: 30% - 34,33% and light intensity: 25,94 Lux- 32,94 Lux.Keywords: Diversity of nepenthes, Gunung Selindung, habitat, nepenthes.
KEANEKARAGAMAN DAN POTENSI JENIS VEGETASI PENYUSUN HUTAN TEMBAWANG AMPAR DI DESA CEMPEDAK KECAMATAN TAYAN HILIR KABUPATEN SANGGAU pin, Ri; Astiani, Dwi; Latifah, Siti
JURNAL HUTAN LESTARI Vol 2, No 2 (2014): Jurnal Hutan Lestari
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v2i2.6865

Abstract

Tembawang Ampar is located at the Village of Cempedak, District of Tayan Sanggau. Human activities to use and manage of this tembawang affected the sustainability of the forest ecosystem. The objectives of  this study is to determine the diversity, the potency and the most dominant species of tembawang Ampar forest. The research was conducted by applying survey method with  stratified sampling. Within each stratum (1. dominated by fruit tree; 2. rubber; and 3. apik), we used survey technique with a combination of line transects method with systematic plot samplings). Our research indicated that there were 97 species of vegetation registered, which were grouped into 34 family. The analysis of the Shannon-Wiener diversity index showed that species diversity of forest vegetation within  in the tembawang Ampar dominated by rubber and Apik plant is lower than fruit tree cover. The diversity Indexes of rubber and apik plat were H '<1, the while the area of ​​fruit trees showed  diversity Index between1 ≤ H '≤ 3. The most dominant species and the greatest potency in the tembawang Ampar forest is  rubber plant (Hevea brasilliensis Will ex A. Juss) of family Euphorbiaceae. Keywords: Species diversity, dominant species,, tembawang, Ampar forest sustainability