Claim Missing Document
Check
Articles

Found 7 Documents
Search

Potensi Simpanan Karbon pada Beberapa Tipologi Hutan Rawa Gambut di Kalimantan Tengah Qirom, Muhammad Abdul; Yuwati, Tri Wira; Santosa, Purwanto Budi; Halwany, Wawan; Rachmanadi, Dony
Jurnal Ilmu Kehutanan Vol 12, No 2 (2018)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7890.083 KB) | DOI: 10.22146/jik.40150

Abstract

Akurasi pendugaan simpanan karbon hutan rawa gambut dapat ditingkatkan melalui pengukuran masing-masing gudang/sumber karbon dan berbagai macam tipologi hutannya. Pengukuran tersebut berkaitan dengan besarnya kandungan dan fraksi simpanan karbon pada masing-masing gudang karbon. Penelitian ini bertujuan untuk mendapatkan kandungan dan potensi simpanan karbon pada masing-masing gudang karbon di tipologi gambut. Pengukuran simpanan karbon dilakukan pada lima gudang karbon yakni vegetasi (tingkat permudaan pohon), serasah, tumbuhan bawah, nekromasa dan tanah. Hasil penelitian menunjukkan kandungan karbon adalah 50% dari berat kering biomassa. Kandungan karbon tidak dipengaruhi oleh gudang karbon dan tipologi gambut. Pada tanah gambut, kedalaman gambut mempengaruhi besarnya kandungan karbon sehingga besarnya faktor konversi harus memperhatikan kedalaman masing-masing tipologi gambut. Potensi simpanan karbon terbesar pada tipologi hutan sekunder dengan kedalaman gambut antara 3-3,5 m sebesar 3.722,08 Mg/ha sedangkan potensi simpanan karbon terendah pada tipologi semak belukar dengan kedalaman gambut 3-3,5 m sebesar 2243,49 Mg/ha. Pada hutan gambut, gudang karbon tanah menyumbang >95% dari simpanan karbon total. Gudang karbon nekromasa memberikan sumbangan simpanan karbon terkecil. Fraksi simpanan karbon pada masing-masing gudang karbon berturut-turut adalah tanah> vegetasi> serasah> tumbuhan bawah> nekromasa.Carbon Stocks Potential of Peatland Forests Typologies in Central KalimantanAbstractAccuracy of carbon stocks estimation can be enhanced by measuring each carbon pools in various forest peatland typologies. The carbon stocks measurement is associated with the amount of contents and fractions of carbon stocks. The research objectives were to obtain the information of carbon contents and carbon stocks potentials in each carbon pool in the peat typologies. Carbon stocks measurement was conducted in five carbon pools which were: vegetation (tree stages), litter, understory, necromass, and soil. The results showed that the carbon contents reached more than 50% of its dry weight. The carbon contents were not affected by the carbon pools and peat typologies. In the soil carbon pools, peat depth affected the amount of carbon content so that the magnitude of the conversion factor should concentrate to the depth of each peat typology. The greatest potential of carbon stocks was found in the secondary forest (3,733.08 Mg/ha) with the peat depths between 3-3.5 m, while the lowest potential of carbon stocks found in the bush typology (2243.49 Mg/ha) with the peat depths between 3-3.5 m. In the peat typology, soil carbon stocks contributed more than 95% of total carbon stocks whereas necromass carbon stocks contributed the smallest amount of carbon. The fractions of carbon stocks in each carbon pools were soil> vegetation> litter> understorey> necromass, respectively.
VIABILITY OF PENICILLIUM CITRINUM ON DIFFERENT CARRIER MEDIA AS ORGANIC FERTILIZER Hakim, Safinah Surya; Yuwati, Tri Wira; Rachmandi, Dony; Santosa, Purwanto B; Ardhana, Adnan; Alimah, Dewi
Jurnal Wasian Vol 6, No 2 (2019): Jurnal Wasian
Publisher : Balai Penelitian dan Pengembangan Lingkungan Hidup dan Kehutanan (BPPLHK)Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jwas.v6i2.5366

Abstract

The use of bio-fertilizer is increasing along with the awareness of eco-friendly life style. The use of bio-fertilizer give several advantages such as enhancing plant growth, provide plant nutritions, easily absorbed by plant and environmental friendly. Endophytic fungi can be used as biological fertilizers.In this study, endophytic fungi Penicillium citrinum isolate P3.10 were used as a main ingredient for biological fertilizers. This study aims to investigate: (a) the most effective carrier material for biological fertilizers made from endophytic fungi P. citrinum and (b) maximum shelf-life of biofertilizers. Three carrier materials were tested to find out the best carrier as biological fertilizer carriers. Factorial Completely Randomized Design with two factors used in this study with the first factor is the type of carrier material (rice bran, saw dust, and peat soil), and the second factor is storage time (14, 28, 42, 56, dan 70 days).The result of the study and consideration based on the standards of biological fertilizer regulation of the Minister of Agriculture Number 70 / Permentan / SR.140 / 19/2011) showed that of the three tested carriers (rice bran, sawdust, and peat), peat showed the best performance as biofertilizer carrier with the recommend maximum shelf-life is 28 days (5,62 x 105 cfu/gram) due to its C/N ratio value and its viability to maintain the number of viable fungi. Keywords: formulation, biofertilizer, endophytic fungi, peat soil, shelf-life 
Isolation of peat swamp forest foliar endophyte fungi as biofertilizer Hakim, Safinah Surya; Yuwati, Tri Wira; Nurulita, Sari
Journal of Wetlands Environmental Management Vol 5, No 1 (2017): January-June 2017
Publisher : Center for Journal Management and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jwem.v5i1.111

Abstract

Peatland restoration activity is facing many obstacles, particularly in planting techniques and poor nutrient in peat soil. Naturally, endophytic fungi are abundant and have great potential as biofertilizer. This research investigates the potential endophytic fungi isolated from leaves of peat swamp tree species for biofertilizer. Research activities include: exploration, in vitro test to examine the phosphate solubilization and identification. Result showed that there were 360 leave segments collected from 4 sampling locations. The colonization percentage of 222 isolates ranged from 52.17% - 60.17%. Fifty seven morphospecies were selected from 222 isolates. Twelve isolates demonstrated ability to produce clear zones and ten isolates were selected for identification. It is concluded that twelve isolated demonstrated potential ability to produce clear zone and Penicillum citrinum isolate P3.10 was identified as an isolate that show the highest potential ability as a biofertilizer
Agroforesty System For Rehabilitation of Degraded Peatland in Central Kalimantan Harun, Marinus Kristiadi; Yuwati, Tri Wira
Journal of Wetlands Environmental Management Vol 3, No 1 (2015): January-June, 2015
Publisher : Center for Journal Management and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jwem.v3i1.8

Abstract

The aim of this research was to analyze the development of jelutung in the agroforestrysystem for the rehabilitation of the degraded peatland fulfilling technically applicable andenvironmentally friendly. Primary data of this research were collected via interviews, observations,field measurements and focus group discussion (FGD) involving all parties. The research resultsshowed that the development of jelutung in agroforestry system was technically applicable, andenvironmentally friendly for the rehabilitation of degraded peatlands. There are 5 certified jelutungseed sources in Central Kalimantan Province that can produce about 126,920,000 seeds per years.The local people’s nursery can produce 1 – 3 million readily planted jelutung seedlings per years. Insallow peatland there are 3 agroforestry systems that have already been developed by the localpeople. In deep peatlands, there are 2 agroforestry systems that have already been developed by thelocal people. Jelutung growth performances on a variety of agroforestry systems showed that theannual stem height increment reached 86.55 – 127.94 cm and stem diameter increased 1.56 – 2.15cm. On the environmental aspect it is known that the diversity of peatland macro-fauna coveredwith jelutung agroforestry was greater than that covered with monoculture and abandoned land (asindicated by Shannon Wiener index values, that were 1.8; 1.,2; 1.7, respectively for PSM method).The peatland covered by jelutung agroforestry exhibited by the following characteristisc: pH=3.94;N total = 0.4%; C organic = 48.58%; C/N = 121.45.
Enhancing sengon seedling’s growth by using indigenous arbuscular mycorrhiza from tropical peatland Yuwati, Tri Wira; Atinah, Atinah; Imaningsih, Witiyasti
Jurnal GALAM Vol 1, No 2 (2021): Jurnal GALAM, Vol.1 No.2 2021
Publisher : Jurnal GALAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/glm.2021.1.2.93-107

Abstract

The research aimed to determine the effect of arbuscular mycorrhizal isolates from Central Kalimantan peat swamp forest on the growth of Paraserianthes falcatharia.  Arbuscular mycorrhizal isolates consisted of Glomus sp.2 (blackish brown) & Glomus sp.3 (dark brown) isolated from the peatland of Central Kalimantan. The mycorrhizal colonization was observed and plant growth parameters were measured for five months. The design used in this research was a complete randomized design and divided into Glo1S2 (Glomus sp.2, 2 spores), Glo1S4 (Glomus sp.2, 4 spores), Glo2S2 (Glomus sp.3, 2 spores), Glo2S4 (Glomus sp.3, 4 spores), control I and control II. The result showed that arbuscular mycorrhiza colonization significantly different between the treatment of inoculation compared with control. Glo2S4 treatment gave a significant effect on the growth of P. falcatharia in terms of plant height, stem diameter, number of leaves, root length and total biomass.
The carbon stock as indicator of peatland recovery after fire in Central Kalimantan Qirom, Muhammad Abdul; Yuwati, Tri Wira; Syaifuddin, Syaifuddin
Jurnal GALAM Vol 1, No 2 (2021): Jurnal GALAM, Vol.1 No.2 2021
Publisher : Jurnal GALAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/glm.2021.1.2.108-122

Abstract

ABSTRACTPeat swamp forest fire was the main cause of the huge carbon stock loss. Forest recovery after fire took a huge cost and long period of time. The aim of this research was to determine the carbon stock on various peat land condition and management intervention and utilize it as bio-indicator for degraded peat swamp forest recovery after fire.  The data was collected from three location representing three sites: after 1997 fire (ex 1997), unburnt secondary forest and area that was severely burnt in 2005 but already re-planted. Measurement was carried out on the vegetation carbon stock namely seedlings, saplings, poles and trees. The carbon stock was determined using 5 sampling plots on secondary forest and 6 plots on other sites. Carbon counting was using allometric equation. The result showed that the carbon stock was affected by the various type and management intervention of the sites especially at the rehabilitation site.  The carbon stock of ex-1997 and secondary forest was not significantly different on all stages of vegetation including the total number. The carbon stock on ex-1997 and secondary forest was 258, 95 Mg/Ha and 254,36 Mg/Ha, respectively. The condition showed that ex-1997 site had the ability to naturally recovered. The rate of recovery can be approached with carbon stock estimation as indicator for peatland recovery after fire. The indicator can be used on sites with no species diversity requirements as recovery factor such as protected or conservation areas. Keywords: natural, allometric, degradation, indicator
Diversity of arbuscular mycorrhiza spores under Shorea balangeran (Korth.) Burck. plantation as bioindicator for the revegetation success Yuwati, Tri Wira; Putri, Wanda Septiana
Jurnal GALAM Vol 1, No 1 (2020): Jurnal GALAM, Vol.1 No.1 2020
Publisher : Jurnal GALAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/glm.2020.1.1.15-26

Abstract

Arbuscular mycorrhiza is an association between fungi and plantroots. Arbuscular mycorrhiza has many functions such as improving the plant’s growth, increasing the absorption of soil nutrients and enhancing the plants tolerant to extreme condition. Tumbang Nusa Forest for Specific Purpose is a peat swamp forests in Central Kalimantan that was severely burnt in 2015. Peat land rehabilitation program has started since 2016, by Shorea balangeran (Korth.) Burck planting. The aim of this research was to determine the diversity of arbuscular mycorrhiza spores under S. balangeran tree. The results showed that there was relationship between the age of S. balangeran and number of spores. Moreover, there were 4 spores of arbuscular mycorrhiza identified as Glomus sp., Gigaspora sp., Acaulospora sp. and Scutellospora sp