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All Journal Jurnal Hutan dan Masyarakat Jurnal Penelitian Agrosamudra Jurnal Dirosah Islamiyah Jurnal Sylva Lestari
M Daud
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Social Sciences Other

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Estimasi Biomassa, Cadangan Karbon, Produksi O2 dan Nilai Jasa Lingkungan Serapan CO2 Tegakan Hutan di Taman Hutan Raya Abdul Latief Sinjai Timur Irma Sribianti; Sultan; Muthaminnah; M Daud; Nirwana; Andi Aziz Abdullah; Ashar Sardiawan
Jurnal Hutan dan Masyarakat VOLUME 14 NO 1, JULI 2022
Publisher : Fakultas Kehutanan, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (395.727 KB) | DOI: 10.24259/jhm.v14i1.18022

Abstract

ABSTRACT: This study aims to determine the potential of biomass, carbon stocks, and carbon dioxide (CO2) absorption in forest stands in the Abdul Latief Forest Park, Sinjai District, South Sulawesi Province. Measurement of biomass at various levels of growth was carried out by making plots of 20 with a size of 20 m x 20 m for tree level, 10 m x 10 m for pole level and 5 m x 5 m for sapling level. Tree biomass, poles and saplings are calculated using allometric equations for tropical wood species in Indonesia. Measuring carbon stocks is done by multiplying biomass with a conversion rate of 0.47 (47%) while carbon dioxide (CO2) absorption is calculated by multiplying the average annual growth of biomass with a conversion rate of 1.4667 obtained from the photosynthesis equation. Based on the results of the study showed that the biomass content of forest stands in the Abdul Latief Forest Park was 192.10 Ton/Ha, carbon stocks in the forest stand in the Abdul Latief Forest Park were 90.28 Ton/Ha, the oxygen production was 385,59 Ton/Ha and the absorption of carbon dioxide (CO2) in forest stands in Abdul Latief Forest Park of 13.13 Tons/Ha/Year oksigen. Value of Environmental services carbon dioxide was Rp. 35.267.664/Ton/Tahun Keywords : Biomass, Carbon dioxide absoption, Oxygen Production, Value of Enviromental Services, Forest Park
Pengaruh Kepemimpinan Kepala Sekolah dan Kreatifitas Guru Terhadap Hasil Belajar Siswa di MTs Nurul Furqon, Cibinong, Bogor M Daud; Qowaid Qowaid; Mohammad Jaenudin
Jurnal Dirosah Islamiyah Vol 2 No 1 (2020): Jurnal Dirosah Islamiyah
Publisher : Sekolah Pascasarjana Institut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (620.03 KB) | DOI: 10.47467/jdi.v2i1.99

Abstract

The background of this research problem is the assumption that school principals and teachers as the main causes of low student learning outcomes such as the National Examination Score and Student Graduation are not in line with expectations or the ranking has dropped. The purpose of this study was to determine the joint effect of Principal Leadership and Teacher Creativity on Student Learning Outcomes at MTs Nurul Furqon, Cibinong, Bogor. The research method used in this study is a quantitative method. This research is correlational because the research seeks to investigate the effect of Principal Leadership and Teacher Creativity on Student Learning Outcomes at MTs Nurul Furqon, Cibinong, Bogor. Data collection techniques using the study of literature, documentation, observation, and questionnaires. The population and sample were students of MTs Nurul Furqon, Cibinong, Bogor. Research respondents numbered 127 class IX students. Data analysis techniques using correlation and regression analysis. The results showed that (a) the Principal's Leadership contributed very significantly and influenced very high and the direction of a positive relationship to student learning outcomes in MTs Nurul Furqon, Cibinong, Bogor Regency based on α = 0.05 r count = 0.993 and r table with N = 127 in the significance level of 5% = 0.174. Then rx1y = 0.993 means r count> r table. Comparison of r count with r table shows that r count is greater than r table that is 0.993 or 99.3% for the Principal Leadership variable (X1). (b) Teacher creativity gives a very significant contribution and very high influence and direction of a positive relationship to student learning outcomes in MTS Nurul Furqon, Cibinong, Bogor Regency based on α = 0.05 r count = 0.9877 and r table with N = 127 in the significance level of 5% = 0.174. Then rx2y = 0.9877 means r arithmetic> r table. Comparison of r arithmetic with r table shows that r arithmetic is greater than r table that is 0.9877 or 98.77% for the Teacher Creativity variable (X2). (c) The Principal's Leadership and Teacher's Creativity together contribute very significantly and have a very high influence and direction of a positive relationship to student learning outcomes at MTS Nurul Furqon, Cibinong, Bogor Regency based on α = 0.05 r count = 0.9935 and r table with N = 127 in the significance level of 5% = 0.174. Then rx2y = 0.9935 means r count> r table. Comparison of r count with r table shows that r count is greater than r table that is 0.9935 or 99.35% for the variable Principal Leadership and Teacher Creativity.
PENGARUH JENIS PUPUK HAYATI DAN JARAK TANAM TERHADAP KACANG HIJAU(Vigna radiata, L) Cut Mulyani; m daud
Jurnal Penelitian Agrosamudra Vol 3 No 2 (2016): Jurnal Penelitian Agrosamudra
Publisher : Program Studi Agroteknologi Fakultas Pertanian

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Abstract

Penelitian ini bertujuan untuk pengaruh jenis pupuk hayati dan jarak tanam terhadap pertumbuhan dan hasil tanaman kacang hijau, serta interaksi yang dimunculkan oleh kedua perlakuan tersebut. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) pola faktorial, yang terdiri dari 2 faktor yaitu : Faktor jenis pupuk hayati dengan notasi (H) terdiri dari 4 taraf yaitu H0 (Kontrol atau tanpa pupuk), H1 (Pupuk hayati Biobost), H2 (Pupuk hayati Bio Super Aktif), dan H3 (Pupuk hayati Petrobio). Faktor jarak tanam dengan notasi (J) terdiri dari 3 taraf : yaitu J1 (20 x 10 cm), J2 (20 x 20 cm), dan J3 (20 x 30 cm). Hasil penelitian menunjukkan bahwa bahwa jenis pupuk hayati berpengaruh sangat nyata terhadap berat biji kering per plot dan berat 100 butir biji kering, berpengaruh nyata terhadap tinggi tanaman pada umur 45 HST. Perlakuan terbaik ditemukan pada perlakuan pupuk hayati Petrobio (H3). Jarak tanam berpengaruh sangat nyata terhadap pertumbuhan tinggi tanaman pada umur 45 HST, berat biji kering per plot, serta berat 100 butir biji kering. Perlakuan terbaik ditemukan pada jarak tanam 20 x 20 cm (J2). Interaksi antara jenis pupuk hayati dan jarak tanam berpengaruh tidak nyata terhadap seluruh parameter pengamatan.
Land Productivity and Land Equivalent Ratio of Agroforestry System in Marena Customary Forest, Enrekang Regency, South Sulawesi Province, Indonesia Samrin, Samsul; Millang, Syamsuddin; Ridwan; Daud, M
Jurnal Sylva Lestari Vol. 12 No. 2 (2024): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i2.877

Abstract

Applying agroforestry system in the customary forest area plays a significant role in increasing the productivity of the community’s land because it will increase the economic value and welfare of the customary community. This study aims to analyze the agroforestry system’s land productivity and land equivalent ratio in the Marena Customary Forest (MCF) area, Enrekang Regency. This research used a survey method involving observation, questionnaires, and interviews with sample respondents who owned land and applied agroforestry systems in the MCF. Data obtained from interviews and field observations were then analyzed descriptively. The study revealed that applying agroforestry systems in the community-managed MCF can increase land productivity, showing the value of land productivity of IDR 20,512,208/ha/year. The agroforestry system’s land equivalent ratio (LER) amounted to 2.34. This shows that applying the agroforestry system is considered capable of increasing land productivity and the income and welfare of the indigenous people of Marena. Keywords: agroforestry, customary forest, land equivalent ratio, land productivity
Co-Authors Andi Aziz Abdullah Ashar Sardiawan Cut Mulyani Mohammad Jaenudin Muthaminnah Nirwana Qowaid Qowaid Ridwan Samrin, Samsul Sribianti, Irma sultan Syamsuddin Millang, Syamsuddin