Claim Missing Document
Check
Articles

MODEL SIMULASI PENJARANGAN HUTAN TANAMAN EKALIPTUS Aswandi, Aswandi
Jurnal Penelitian Hutan dan Konservasi Alam Vol 4, No 2 (2007): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.746 KB)

Abstract

ABSTRAK Penelitian ini  bertujuan untuk mendapatkan model hipotetis penjarangan hutan tanaman jenis ekaliptus (Eucalyptus  grandis  Hill  ex  Maiden)  berdasarkan  pendekatan  analisis  sistem.  Pada  saat  ini  di  lokasi penelitian kegiatan penjarangan belum dilakukan karena orientasi pengusahaan masih pada hasil biomassa. Model sistem yang dibangun digunakan untuk mengetahui waktu dan intensitas penjarangan yang optimal. Berdasarkan simulasi terhadap berbagai skenario preskripsi penjarangan, intensitas penjarangan 25 % dengan rotasi penjarangan 15 tahun memberikan hasil maksimal sebesar 40,7 m3 per ha per tahun atau 610,5 m3 per ha tegakan dengan rata-rata diameter 39,0 cm. Hasil total tersebut diperoleh dari kegiatan penjarangan sebesar 80,1 m3  per ha dan hasil tebangan akhir daur sebesar 530,4 m3  per ha. Model yang dibangun merupakan model hipotetis sehingga validasi sangat perlu dilakukan dengan membangun petak ukur penjarangan di lapangan. 
MODEL ANALISIS SISTEM DINAMIKA PERTUMBUHAN DAN PENGATURAN HASIL HUTAN RAWA BEKAS TEBANGAN DI RIAU Aswandi, Aswandi
Jurnal Penelitian Hutan dan Konservasi Alam Vol 4, No 3 (2007): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRAK Penelitian ini bertujuan untuk mendapatkan model analisis sistem dinamika struktur tegakan dan pengaturan hasil hutan rawa tidak seumur di Riau. Model disusun berdasarkan pada seri data petak ukur permanen di hutan alam bekas tebangan pada kawasan pengusahaan hutan PT. Diamond Raya Timber, Provinsi Riau. Dinamika struktur tegakan terdiri atas ingrowth, upgrowth, dan mortality. Model yang dibangun didasarkan pada kelompok jenis (Dipterocarpaceae, non-Dipterocarpaceae, dan non-komersial). Hasil simulasi menunjukkan bahwa dengan siklus tebang 35 tahun, tegakan pada siklus tebang kedua belum mencapai kondisi semula. Memperpanjang siklus tebang hingga 40 tahun atau menurunkan limit diameter hingga kelas diameter 40 cm merupakan alternatif untuk menjaga kelestarian hasil. Siklus tebang yang semakin panjang ini juga didukung oleh riap diameter yang lebih kecil dari satu cm/tahun yang menjadi dasar penetapan siklus tebang 35 tahun.
PERSEPSI LEMBAGA STRATEGIS TERHADAP KRITERIA DAN INDIKATOR PENGELOLAAN HUTAN ALAM PRODUKSI LESTARI Aswandi, Aswandi; Harahap, Rusli MS
Jurnal Penelitian Hutan dan Konservasi Alam Vol 4, No 1 (2007): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRAK Penelitian ini  bertujuan untuk  mendapatkan informasi tentang persepsi dari berbagai lembaga strategis terhadap  setiap  kriteria  indikator Pengelolaan Hutan  Alam Produksi  Lestari (PHAPL),  hasil  pengujian penerapan kriteria dan indikator, permasalahan yang muncul, dan hasil perumusan berbagai strategi pengelolaan hutan lestari. Hasil menunjukkan bahwa pemenuhan kriteria prasyarat memiliki bobot tertinggi terhadap pencapaian pengelolaan hutan lestari khususnya indikator kepastian kawasan unit manajemen. Disadari oleh masing-masing stakeholder bahwa kepastian status unit manajemen merupakan dasar dari kepastian pengusahaan hutan dan ketidakpastian, hal ini merupakan akar dari konflik yang terjadi antara masyarakat dengan pemegang konsesi Hak Pengusahaan Hutan (HPH). Masalah ini juga diakibatkan oleh tidak terakomodasikannya kepentingan masyarakat terhadap sumberdaya hutan. Oleh karena itu strategi pemecahannya harus diarahkan pada penetapan kepastian kawasan, perbaikan pasar perkayuan (termasuk pengatasan illegal trade), dan pengikursertaan masyarakat dalam kegiatan pengelolaan hutan. Dalam implementasi penilaian kriteria dan indikator PHAPL, mekanisme penilaian yang terlalu spesifik dan kaku cenderung menyulitkan penilai untuk mengakomodasikan dinamika perubahan yang terjadi dan juga cenderung lebih bersifat teknis  prosedural, sehingga diperlukan perumusan kembali  terutama berkaitan dengan berbagai aspek gangguan dan kondisi spesifik hutan alam produksi.
Karakteristik Buah, Benih dan Penyemaian Macadamia integrifolia di Persemaian Aek Nauli, Sumatera Utara Aswandi, Aswandi; Kholibrina, Cut Rizlani; Lumbantobing, Selamat
Jurnal Penelitian Kehutanan Sumatrana Vol 2, No 1 (2018): Jurnal Penelitian Kehutanan Sumatrana
Publisher : Jurnal Penelitian Kehutanan Sumatrana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpks.2018.2.1.47-56

Abstract

Salah satu jenis potensial untuk rehabilitasi hutan dan lahan di DTA Danau Toba adalah Macadamia integrifolia. Selain adaptif pada lahan kritis, pohon ini menghasilkan buah yang dapat dimakan dan bernilai ekonomi. Sehingga diperlukan upaya pembangunan sumber benihnya di kawasan ini. Tujuan kegiatan ini adalah untuk pengetahui karakteristik buah, benih dan penyemaian Macadamia (Macadamia integrifolia) yang berasal dari Hutan Penelitian Sipisopiso, Danau Toba Sumatera Utara. Penelitian yang dilakukan meliputi penanganan buah; penangan benih/biji dan penyemaian benih. Hasil penelitian menunjukkan rata-rata berat buah basah adalah 7,51 g atau terdapat 141 buah per 1 kg. Berat rata-rata benih adalah 5,83 atau 181 biji dalam satu kilogramnya. Benih mulai berkecambah pada hari ke 26 dengan masa kecambah benih selama 70 hari. Daya kecambah tertinggi terdapat pada benih yang tidak mendapat perlakuan perendaman (kontrol). Perlakuan peretakan benih mampu mempercepat perkecambahan benih. Benih yang direndam dengan air dingin selama 24 jam mampu meningkatkaan daya kecambah hingga 78%. Berdasarkan pertumbuhan awal selama 6 bulan di persemaian, kecambah memiliki tinggi rata-rata 13,7 cm dengan  diameter 3,2 mm.
PERBEDAAN JENIS PERLAKUAN DAN LAMA PEMERAMAN PAKAN KOMPLIT DENGAN BAHAN BASAL DAUN TEBU TERHADAP NILAI KECERNAAN SECARAIN- VITRO Aswandi, Aswandi; Marhaeniyanto, Eko; Fitasari, Eka
Fakultas Pertanian Vol 7, No 1 (2019)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The aim of the study was to determine the effect of the administration of probiotics Em-4 and the length of ripening on the digestibility of dry matter and organic matter from complete feed made from basal sugarcane leaves in vitro. The implementation of in vitro research, analysis of dry matter and organic materials was carried out in the Lab. Nutrition and Feed of Universitas Brawijaya Malang. The research design used was Factorial Completely Randomized Design (CRD) with 6 treatments and 4 replications consisting of: factor I: complete feed with basal sugar cane leaf ingredients Factor II: Duration of curing, so that the number of experiments was 24 units. The parameters observed in this study were dry matter digestibility (DMD), digestibility of organic matter (OMD). The results showed that the old treatment for ten days of ripening could produce 49.42% organic matter digestibility and 43.07% dry matter digestibility. Further research is needed for the use of complete sugar cane leaves with the addition of feed additives that can improve dry matter digestibility and digestibility of organic matter. Tujuan penelitian untuk mengetahui pengaruh pemberian probiotik Em-4 dan lama pemeraman terhadap kecernaan bahan kering dan bahan organik pakan komplit berbahan basal daun tebu secara in vitro. Pelaksanaan penelitian in vitro, analisa bahan kering dan bahan organik dilaksanakan di Lab. Nutrisi dan Pakan Universitas Brawijaya Malang. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) Pola Faktorial dengan 6 perlakuan dan 4 ulangan, terdiri dari: faktor I:pakan komplit dengan bahan basal daun tebu Faktor II:Lama pemeraman, sehingga jumlah percobaan sebanyak 24 unit. Parameter yang diamati dalam penelitian ini adalah kecernaan bahan kering (KcBK), kecernaan bahan organik (KcBO). Hasil penelitian menunjukkan perlakuan lama pemeraman sepuluh hari dapat menghasilkan kecernaan bahan organik sebesar 49,42 % dan kecernaan bahan kering sebesar 43,07 %. Diperlukan penelitian lebih lanjut penggunaan pakan komplit daun tebu dengan penambahan feed additive yang mampu memperbaiki kualitas kecernaan bahan kering dan kecernaan bahan organik.
DESKRIPSI DAN PREFERENSI HABITAT UDANG AIR TAWAR MACROBRACHIUM ROSENBERGII (DE MAN, 1879) DARI SUNGAI MARAJA, TOLI-TOLI, SULAWESI TENGAH Aswandi, Aswandi; Annawaty, Annawaty
Natural Science: Journal of Science and Technology Vol 8, No 2 (2019): Volume 8 Number 2 (August 2019)
Publisher : Univ. Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (459.574 KB)

Abstract

Macrobrachium rosenbergii (De Man, 1879) is a freshwater prawn species that have a high economic value because of its relatively large size compared to the other freshwater prawn species. Exploration to find this species in the Maraja River, Toli-Toli, Central Sulawesi was carried out in January 2019. Sample collected using tray net. Two male specimens of M. rosenbergii were found in the river, with maximum size of carapace length reaching 45.94 mm. Macrobrachium rosenbergii has been found in habitats with clay substrate and slow flowing current. This record extended the distribution of M. rosenbergii, whose spread in Sulawesi has been known only in the southern part of the island, such as in Makassar, Bone, Pinrang, Wajo and Luwu. In this paper, the morphological characters and line drawing of some character M. rosenbergii from the Maraja River were provided.
PENGEMBANGAN BUKU TIGA DIMENSI UNTUK PEROLEHAN BELAJAR KONSEP STRUKTUR DAN FUNGSI SEL Supartini, Sri; Asrori, Asrori; Aswandi, Aswandi
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 7, No 4 (2018): April 2018
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (359.285 KB)

Abstract

Abstract       This study aims to: 1) Design the prescriptions of learning tasks that are contained in three-dimensional book media structure and cell functions. 2) Describe the three-dimensional book designing media techniques for cell structure and function. 3) Generate three-dimensional book media display of cell structure and function. 4) Know the acquisition of learning structure and cell function after using the media of three-dimensional book (Pop up book). This research type is research and development with quantitative approach. The research samples used random sampling technique in homogenous population in class XI MIPA 1, XI MIPA 2, XI MIPA 3, XI MIPA 4, XI MIPA 5, XI MIPA 6, XI MIPA 7, XI MIPA 8, and XI MIPA 9. Random sampling technique obtained by one class as research sample that is class XI MIPA 8 SMA Negeri 1 Pontianak. The results of the research are: 1) Learners become very helpful in understanding the concept of cell structure and function in the presence of learning scenarios that contain learning tasks that reflect the scientific approach stages; observing, questioning, collecting data, associating and communicating - as prescriptions of learning tasks. 2) The three-dimensional book is designed based on the learners' needs analysis aimed at solving learning problems. 3) The learners' enthusiasm in the study of cell material can be raised and motivated by a three-dimensional book view of cell structure and function. 4) The acquisition of learning the concept of cell structure and function increases as a result of the three-dimensional book. This can be seen from the results of t-test calculations. In the final stages of data analysis is the value of t arithmetic equal to -9.161 with Sig 0.000. Because Sig <0.05 can be concluded that the use of three-dimensional book structure and cell function can improve learning achievement learners.        Keywords: Three-Dimensional Books, Acquisition of Learning Concepts of Cell Structure and Function
PENGARUH KEPEMIMPINAN DAN MOTIVASI KEPALA SEKOLAH TERHADAP KEPUASAN KERJA GURU DI SEKOLAH DASAR NEGERI KECAMATAN TEBAS Akhmadi, Akhmadi; Asmara, Urai Husna; Aswandi, Aswandi
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 6, No 12 (2017): Desember
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (811.319 KB)

Abstract

Abstract The general problem raised in this study is whether the leadership of the principal has a significant effect on job satisfaction, does the principal's motivation significantly  influence the teacher's job satisfaction, and or does the principal's  leadership and motivation affect teachers' job satisfaction equally?The regression test results from independent variables to the dependent variable   obtained data of 39.7% and 33.2% respectively and together independent variables to the dependent variable 68%. Thus it is stated that there is a significant influence     between the independent variables on the dependent variable. Other data that support is that the results of F arithmetic on Anova b 21, 737 is greater than F table is 3.04 and accepted.Based on the above data can be summed up as follows:The category of job satisfaction satisfy with the frequency distribution of respondents Of 203 samples or 40.39%. Headmaster leadership categories with frequency distribution 81 Respondents  from 203 samples or 39.90%. High school principal motivation with frequency distribution of 81 respondents rom203 samples or 39.90%.The leadership of the principal influences significantly Teacher's job satisfaction in SD Negeri Kecamatan Tebassebesar 39,7%. The motivation of the principal has an effect on the satisfaction of teachers of SD Negeri Tebas sub-district is significantly 33,2%. Headmaster's leadership and principal motivation together-The same effect on the job satisfaction of elementary school teachers Tebas District Significantly by  68%.        Key Words: Principal Leadership, Principal Motivation, and Master's Job Satisfaction.
PENGARUH KEINOVASIAN DAN KARAKTERISTIK GURU TERHADAP KINERJA GURU DI SMP NEGERI SE-KABUPATEN BENGKAYANG Erawati, Eka; Aswandi, Aswandi; Sukmawati, Sukmawati
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 9, No 2 (2020): Februari 2020
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (768.105 KB)

Abstract

Abstract This research focuses on teacher performance that is related with teacher innovation and their characteristics, in terms of gender, educational background, and work experience. Teacher innovation is focused on: (a) associating skills, (b) questioning, (c) observing, (d) experimenting, and (e) networking. The purpose was to determine how the influence of teacher innovation and its characteristics on the performance of Junior High School (SMPN) teachers in Bengkayang. This research uses quantitative research methods with the use of a questionnaire as a data collection tool. The subjects were 144 teachers with characteristics as permanent school teachers, two years experience, and a bachelor?s degree (S1). They were taken based on the distribution of sub-arrays and took 6 teachers in each school. Based on data analysis, the results are: (1) Teacher innovation influences the performance of SMPN teachers in Bengkayang; (2) Teacher characteristics in terms of gender, educational background, and work experience have an influence on the performance of SMPN teachers in Bengkayang; and (3) Teacher innovation and teacher characteristics in terms of gender, educational background, and work experience have a simultaneous influence on the performance of SMPN teachers in Bengkayang. The conclusion of this study is the level of teacher innovation and its characteristics in terms of gender, educational background, and work experience simultaneously have a significant effect on the performance of of SMPN teachers in Bengkayang by 62.50%, while the other 37.50% is influenced by other variables. Suggestions in this study are: (1) For teachers, they should maintain and improve its performance which is generally good; (2) Teachers should continue to improve their innovative power through a lot of reading, attending training activities or seminars, and enriching themselves through supporting information on self-innovation; (3) For the Department of Education, should improve programs that can increase teacher motivation. Some suggested programs such as in the fields of technology, scientific work, the development of new teaching methods based on local wealth, and so on; and (4) It is recommended for other researchers to examine from different perspectives and methods, so that they can see more clearly, in depth, and detail for other variables. Keywords: Characteristic, Innovation, Teachers? Performance
UPAYA PENINGKATAN PARTISIPASI KELUARGA DALAM RANGKA WAJIB BELAJAR 9 TAHUN DI SMPN 1 SALATIGA Rosyulianty, Kania; Aswandi, Aswandi; Wahyudi, Wahyudi
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 6, No 12 (2017): Desember
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (456.807 KB)

Abstract

AbstractThe nine-year compulsory program programmed by the government is a continuation of previous educational programs. The goal is to provide the basic right for the community to obtain educational services. To achieve that goal one of the factors that determine its success is the presence of family participation on education. Related to that, the researcher conducted a study at SMP Negeri 1 Salatiga Kabupaten Sambas. Research questions are directed to: How aspirations, expectation, planning and implementation, as well as barriers to the program of increasing family participation in the framework of 9-year compulsory education at SMP Negeri 1 Salatiga Kabupaten Sambas. To express the question the researcher uses a qualitative research approach type of case study research. To gather data and information from informants, researchers used observation, interviews, and document studies in the process of collecting research data. The results revealed that; The aspirations of the family are generally good, the expectation / success of the essence is very high, the planning is done early in the inhibiting factors such as low economic condition of the parents and the pattern of life that has not changed.        Kata kunci: Partisipasi, Pendidikan, Wajib Belajar 9 Tahun
Co-Authors A Halim A.A. Ketut Agung Cahyawan W Agus Rianto Agustina, Sri Endang Akbar, Syarfani Alwizar Amin, Gazali Amri Amri Annawaty Annawaty, Annawaty Anwar Anwar Aryunis, Aryunis Asasriwarni Asasriwarni Asih Pratiwi Asmara, Urai Husna Asrori Asrori Atiqah, Alya Atthariq, Atthariq Ayu, Ari Bangkit Lutfiaji Syaefullah Bijaksana, Arif Budiman, Moch Ricky Adha Christanto Syam Diah Wulandari Rousdy Djeprin E. Hulawa Dwi Gusmalawati Dwilaksono Aji, Aan E. Marhaeniyanto Eka Fitasari Erawati, Eka Fajira, Hilda Fatahillah, Muhammad Firayanti, Yuni Firdaus, Nil Fitria, Rafika Gunawan, M. I. Guntur Syahputra, Guntur Hartono Hartono Haryono Supriyo Heri Junedi Hidayat, Hari Toha Hutwan Syarifuddin Idhami, Rahmat Ikha Safitri Ilham Safar Indrawati Indrawati Jumakir Jumakir Kholibrina, Cut Rizlani Kusairi, David Lumbantobing, Selamat M Chiar M. Ikhsan Malinda, Sy. Sari Mappigau, Ernawati Mega Sari Juane Sofiana Muhammad Farhan Muhammad Nasir muhammad rizky, muhammad Muhammad Zikri Murita, Murita Mursyidah Mursyidah Nasir*, Muhammad Nurhayati Nurhayati Putra, Halim Dwi Ramadhani, Nur Kholis Ramli, Muhammad Noor Ramzi, Muhammad Ridho Saputra, Ridho Rijal, Afzalur Ronggo Sadono Rosadi rosadi Rosyulianty, Kania Rudi F, Fachri Yanuar Rusli MS Harahap, Rusli MS Safriana Safriana Saputri, Nanda Sukmawati Sukmawati Sunarti Supartini, Sri Usman Radiana Usman Usman Wahab Wahab Wahyudi Wahyudi Wardini, Wardini Warsidah, Warsidah Yanuar, Fachri Yulianto, Dedi Zahri, Andri Irwan Zede, Muhammad Ferryandi