Garuda - Garba Rujukan Digital

Kerawanan Banjir Limpasan di Daerah Aliran Sungai Arui Distrik Masni Kabupaten Manokwari Danang Jatmika Wahyu Wijaya; Irnanda Aiko Fifi Djuuna; Wahyudi; Thomas Frans Pattiasina
JURNAL KEHUTANAN PAPUASIA Vol. 8 No. 2 (2022): Jurnal Kehutanan Papuasia
Publisher : Fakultas Kehutanan UNIPA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46703/jurnalpapuasia.Vol8.Iss2.348

Daerah aliran sungai (DAS) Arui merupakan salah satu DAS di Kabupaten Manokwari yang masuk dalam klasifikasi dipulihkan. Hal tersebut dikarenakan DAS Arui mengalami dampak kejadian banjir limpasan setiap hujan dengan intensitas yang tinggi. Kajian tentang kerawanan, variabel geomorfologi yang berpengaruh terhadap banjir limpasan dan tindakan mitigasi yang tepat diperlukan untuk pengendalian banjir limpasan tersebut. Penelitian ini bertujuan untuk mengidentifikasi tentang bahaya kerawanan banjir limpasan di DAS Arui, mengetahui faktor-faktor bio-fisik atau geomorfologi yang mempengaruhi kerawanan banjir limpasan, serta merekomendasikan mitigasi banjir limpasan. Penelitian ini dirancang dengan metode deskriptif kuantitatif, dimana data digital dari variabel penelitian di kuantifikasi dengan skor dan bobot untuk mendapatkan skor total. Data digital peta diolah dengan menggunakan Arc. GIS dan disajikan dalam bentuk tabel dan peta. Hasil penelitian menunjukkan wilayah DAS Arui memiliki potensi kerawanan banjir limpasan tinggi hingga sangat tinggi seluas 12.371,71 ha (55,89%), variabel geomorfologi yang dominan berpengaruh terhadap banjir limpasan sebesar 55,89% adalah kelerengan. Kegiatan normalisasi Sungai Nimboy telah dilakukan sebagai upaya mitigasi struktural, dan non struktural lebih menekankan kepada partisipasi aktif masyarakat setempat.

Uji Keefektifan Inokulum Arbuscular Mycorrhiza (AM) Fungi pada Pertumbuhan Tiga Jenis Tanaman Di Tailing ModADA Timika Irnanda Aiko Fifi Djuuna; Rima H Siburian
JURNAL KEHUTANAN PAPUASIA Vol. 9 No. 1 (2023): Jurnal Kehutanan Papuasia
Publisher : Fakultas Kehutanan UNIPA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46703/jurnalpapuasia.Vol9.Iss1.427

Fungi Mikoriza Arbuskular (FMA) berasosiasi dengan sebagian besar tanaman dan mempunyai peranan yang sangat penting dalam meningkatkan pertumbuhan dan produktivitas tanaman. Penelitian ini bertujuan untuk menguji efektivitas inokulum FMA terhadap pertumbuhan 2 jenis tanaman kehutanan (Samanea saman dan Calliandra surinamensis) dan 1 jenis tanaman pertanian (Zea mays) di tanah tailing. Percobaan pot dengan Rancangan Acak Lengkap dilakukan di screen house Mile Point 21 PT Freeport Indonesia di Timika. Tailing digunakan sebagai media pertumbuhan dengan lima perlakuan inokulum yaitu Inokulum 1 (dari ModADA bawah), Inokulum 2 (dari ModADA tengah), Inokulum 3 (dari ModADA atas), Inokulum 4 (dari MP 21), dan Inokulum 5 (Mycofer) dengan 3 ulangan. Tinggi tanaman dan diameter batang, dan jumlah daun diamati pada 28, 56 dan 84 hari setelah tanam. Hasil penelitian menunjukkan bahwa pemberian inokulum FMA memberikan pengaruh yang nyata terhadap tinggi tanaman dan diameter batang Samanea saman dan Calliandra surinamensis dibandingkan dengan tanpa pemberian inokulum, namun tidak berpengaruh nyata terhadap jumlah daun pada tanaman jagung. Kemampuan inokulum FMA pada tanah tailing menunjukkan bahwa sumber inokulum ini dapat digunakan sebagai salah satu alternatif sumber pupuk biologi dalam program reklamasi lahan tailing.

Spatial Distribution of Soil Properties and Soil Fertility Status in the Paddy Rice Field of Oransbari Hastuti, Irena Tri; Djuuna, Irnanda Aiko Fifi; Baan, Samen; Bachri, Samsul; Kubangun, Siti Hajar; Musaad, Ishak
JOURNAL OF TROPICAL SOILS Vol 30, No 2: May 2025
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i2.61-68

Soil properties and soil fertility status of paddy rice fields are considered important factors related to the yield and production of rice; therefore it is essential to understand those properties across the farm. The objectives of this research is to quantify the soil properties and soil fertility status of paddy-rice soil and their spatial variability in Oransbari. Forty-two composite soil samples (0-30 cm) were taken across paddy rice fields and analyzed for soil chemical properties and fertility status. Geostatistical analysis and ordinary kriging interpolation methods were used to quantify soil variability and its fertility status across the farm. The results showed that total soil Nitrogen ranges from 0.11% to 0.17%), organic-C (1.47-6.94%), C/N ratio (11-47), total-P (13-99 mg 100 g-1), available-P (30-227 mg kg-1), total-K (27-54 mg 100 g-1), soil pH (5.83-6.93), base saturation (70-100%), and CEC is 30.51-51.23 me 100 g-1. The spatial variability of all soil characteristics exhibited medium and fit the stable model, except for available Phosphorus and Potassium. Most rice paddy fields in Oransbari showed high soil fertility status, which indicated that high-yield rice production can be achieved for this region, however, land management factors should be considered for sustainable land use.

Determination and Prediction of Some Soil Properties using Partial Least Square (PLS) Calibration and Mid-Infra Red (MIR) Spectroscopy Analysis Djuuna, Irnanda Aiko Fifi; Abbott, Lynette; Russell, Craig
JOURNAL OF TROPICAL SOILS Vol. 16 No. 2: May 2011
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2011.v16i2.93-98

Soil chemical, physical and biological analyses are a crucial but often expensive and time-consuming step in the characterization of soils. Rapid and accurate predictions and relatively simple methods are ideally needed for soil analysis. The objective of this study was to predict some soil properties (e.g. pH, EC, total C, total N,C/N, NH4-N, NO3-N, P, K, clay, silt, and sand and soil microbial biomass carbon) across the Wickepin farm during summer season using a Mid-Infra Red - Partial Least Square (MIR–PLS) method. The 291 soil samples were analyzed bothwith soil extraction procedure and MIR Spectrometer. Calibrations were developed between MIR spectral data and the results of soil extraction procedures. Results using the PLS-MIR showed that MIR-predicted values were almost as highly correlated to the measured value obtained by the soil extraction method of total carbon, total nitrogen and soil pH. Values for EC, NH4-N, NO3-N, C/N, P, K, clay, silt, sand, and soil microbial biomass carbon were not successfully predicted by the MIR – PLS technique. There was a tendency for these factors to correlate with the MIR predicted value, but the correlation values were very low. This study has confirmed that the MIR-PLS method can be used to predict some soil properties based on calibrations of MIR values.Keywords: MIR-Partial Least Square, MIR-Spectroscopy, soil properties

Population and Distribution of Some Soil MesoFauna in the Inactive Tailing Deposition Areas of Freeport Indonesia, Timika-Papua Djuuna, Irnanda Aiko Fifi
JOURNAL OF TROPICAL SOILS Vol. 18 No. 3: September 2013
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2013.v18i3.225-229

Soil fauna has played an important role in ecosystem functioning, especially as ecosystem engineers which contribute to soil fertility in tropical environment. A tailing deposition area is one habitat that has several types of soil fauna to live and growth as well as involves in the decomposition of organic matter. The objective of this study was to examine the number and distribution of soil fauna in the tailing area of Freeport Indonesia Mining and Gold Company, Timika. The study was located in some inactive tailing deposition areas in between Double Levee of the lowland area of ModADA (Modification Ajkwa Deposition Areas). Samples were taken from inactive tailing as 198 of ModADA for soil and soil fauna, the Kuadran Method was used to collecting soil fauna on the soil surface and in the soil. There were 17 types/ordo of soil fauna in the study area and the highest number was a group of ants (Hymenoptera/Formicidae). Population density (PD) and relative density (RD) of soil fauna (Formicidae) ranged from 0.03-2.41 Individu m-2 (PD) and 0.07-6.50% (RD). Both PD and RD were likely to increase as the number of soil fauna increase. The distribution of most soil fauna were found as a clump, while Pulmonata (Gastropods) were distributed normally in the tailing areas. The number and types (ordo) of these soil fauna had showed that inactive tailing deposition areas were considered a good habitat for soil fauna.Key words: Distribution, population, soil fauna, tailing[How to Cite: Djuuna IAF. 2013. Population and Distribution of Some Soil MesoFauna in the Inactive Tailing Deposition Areas of Freeport Indonesia, Timika-Papua. J Trop Soils 18 (3): 225-229. Doi: 10.5400/jts.2013.18.3.225][Permalink/DOI: www.dx.doi.org/10.5400/jts.2013.18.3.225]REFERENCESAdianto.1993.Agricultural Biology of Animal Manure, Organic Fertilizer and Insecticides. Bandung: Penerbit Alumni (in Indonesian).Anderson JM and JS Ingram. 1993. Tropical soil biology and fertility: A Handbook of Methods, 2nd ed. CAB International. Wallingford. UK, 221 pp.Battigelli JP. 2011. Exploring the World Beneath your Feet – Soil Mesofauna as Potential Biological Indicators of Success in Reclaimed Soils. Proceedings - Tailings and Mine Waste Vancouver, BC.Behan-Pelletier VM. 1999.Oribatid mite biodiversity in agroecosystems: role as bioindicators. Agric Ecosyst Environ 74: 411-423. Brussard L. 1998. Soil fauna, guilds, functional groupsand ecosystem processes. Appl Soil Ecol 9: 123-136.De Ruiter PC, B Griffiths and JC Moore. 2002. Biodiversity and Stability in Soil Ecosystems: Patterns, Processes and the Effects of Disturbance. In: M Loreau, S Naeem and P Inchausti (eds.). Biodiversity and Ecosystem Functioning: a current synthesis. Oxford University Press, Oxford, UK, pp. 102-113.Djuuna IAF, H Siby and S Baan.2008. Population and Distribution of Soil Fauna on the Below ground of Forest Trees in Gunung Meja Forest Areas of Manokwari. J Beccariana 1: 6. Fitter AH, CA Gilligan, K Holling Worth, A Kleczkowski, RM Twyman, JW Pitchford and the Members of the Nerc Soil Biodiverrsity Programme. 2005. Biodiversity and ecosystem function in soil. Funct Ecol 19: 369-377.Hanafiah KA, I Anas, A Napoleon and N Gofar. 2005. Biologi Tanah : Ekologi dan Makrobiologi Tanah. Edisi 1, PT Raja Grafindo Persada. Jakarta,165 pp. (in Indonesian). Picaud F and DP Petit. 2007.Primary succession of Orthoptera on mine tailings: role of vegetation. Ann de la Soc Entomol de France 43: 69-79Rusek J. 1998. Biodiversity of Collembola and their functional role in the ecosystem. Biodiver Conserv 7: 1207-1219.Sackett TE, AT Classen, and NJ Sanders. 2010.Linking soil food web structure to above and below ground ecosystem processes: ameta-analysis. Oikos 119: 1984-1992.Shao Y, W Zhang, J Shen, L Zhou, H Xia, W Shu, H Ferris and S Fu. 2008. Nematodes as indicators of soil recovery in tailings of a lead/zinc mine. Soil Biol Biochem 40: 2040-2046.Suin NM. 2003. The Ecology of Soil Fauna. Penerbit Bumi Aksara Jakarta (in Indonesian).Sugiyarto. 2000.The Biodiversity of soil macro fauna on the different age of sengon in RPH Jatirejo, Kabupaten Kediri. Biodiversitas 1: 47-53. (in Indonesian).Sugiyarto, M Pujo and Nursihmiati. 2001. Relationship between the Soil Meso Fauna Biodiversity and Belowground Vegetation in Some Forest Trees of Jobolarangan. Biodiversitas 2: 140-145 (in Indonesian)Wallwork JA. 1970. Ecology of Soil Animals. London: Mc.Graw-Hill. 283 pp.Wallwork JA.1976. The Distribution and Diversity of Soil Fauna. Academic Press Inc. (London). 355 pp.

Spatial Distribution of Soil Properties and Soil Fertility Status in the Paddy Rice Field of Oransbari Hastuti, Irena Tri; Djuuna, Irnanda Aiko Fifi; Baan, Samen; Bachri, Samsul; Kubangun, Siti Hajar; Musaad, Ishak
JOURNAL OF TROPICAL SOILS Vol. 30 No. 2: May 2025
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2025.v30i2.61-68

Soil properties and soil fertility status of paddy rice fields are considered important factors related to the yield and production of rice; therefore it is essential to understand those properties across the farm. The objectives of this research is to quantify the soil properties and soil fertility status of paddy-rice soil and their spatial variability in Oransbari. Forty-two composite soil samples (0-30 cm) were taken across paddy rice fields and analyzed for soil chemical properties and fertility status. Geostatistical analysis and ordinary kriging interpolation methods were used to quantify soil variability and its fertility status across the farm. The results showed that total soil Nitrogen ranges from 0.11% to 0.17%), organic-C (1.47-6.94%), C/N ratio (11-47), total-P (13-99 mg 100 g-1), available-P (30-227 mg kg-1), total-K (27-54 mg 100 g-1), soil pH (5.83-6.93), base saturation (70-100%), and CEC is 30.51-51.23 me 100 g-1. The spatial variability of all soil characteristics exhibited medium and fit the stable model, except for available Phosphorus and Potassium. Most rice paddy fields in Oransbari showed high soil fertility status, which indicated that high-yield rice production can be achieved for this region, however, land management factors should be considered for sustainable land use.

Title

Found 16 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 16 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 16 Documents
Search