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All Journal Jurnal Penyuluhan Imaji: Jurnal Seni dan Pendidikan Seni Plumula : Berkala Ilmiah Agroteknologi Jurnal Bina Praja Media Ilmu Kesehatan Jurnal Pengabdian Magister Pendidikan IPA Jurnal Kehutanan Papuasia (Journal of Papuasia Forestry) Akrab Juara : Jurnal Ilmu-ilmu Sosial Jurnal Manajemen Pendidikan dan Ilmu Sosial (JMPIS) Jurnal Pendidikan dan Teknologi Indonesia Jurnal Teknologi Sistem Informasi dan Sistem Komputer TGD Jurnal SAINTIKOM (Jurnal Sains Manajemen Informatika dan Komputer) Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Agrifitia: Journal of Agribusiness Plantation Jurnal Pengabdian Masyarakat IPTEK Jurnal Sistem Informasi Triguna Dharma (JURSI TGD) Elementary School: Jurnal Pendidikan dan Pembelajaran ke-SD-an DEDIKASI : Jurnal Pengabdian Kepada Masyarakat Research Horizon Jurnal Pendidikan Surya Edukasi (JPSE) Coreid Journal Jurnal Ikadbudi : Jurnal Ilmiah Bahasa, Sastra, dan Budaya Daerah JURNAL KEBANGSAAN REPUBLIK INDONESIA Journal of Elektronik Sistem InformasI Jurnal Pendidikan Seni dan Industri Kreatif EMPIRISMA: JURNAL PEMIKIRAN DAN KEBUDAYAAN ISLAM PAUDIA: JURNAL PENELITIAN DALAM BIDANG PENDIDIKAN ANAK USIA DINI Jurnal Wana Tropika INJECT Interdisciplinary Journal of Communication
Purwadi
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Journal : Jurnal Wana Tropika

 1 
Distribusi Diameter Jati dan Mahoni di Hutan Rakyat Desa Semoyo Kecamatan Patuk Kabupaten Gunungkidul Suhartati, Tatik; Purwadi; Saputra, Evan
Jurnal Wana Tropika Vol 12 No 2 (2022): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v12i02.319

Abstract

Community forests in Gunungkidul have developed for a long time and are managed in a traditional way, known as pekarangan, moor and wono. Most of the community forest planting patterns found in Semoyo Village are agroforestry patterns, where trees are planted with a mix of various tree species and one type is dominated, for example teak or mahogany. This study aims to determine the differences in the shape of the diameter distribution of mahogany and teak in dry fields and yards which are dominated by one tree species. The method used is quantitative analysis to produce diameter distribution and draw a curve to describe the stand structure. The results showed that for the type of mahogany in the yard and moor in all class diameters, the number of trees was higher than teak. The diameter distribution of mahogany and teak both in the yard and dry land both showed a shape that resembled an inverted J and was successfully modeled using the exponential model.
Pemodelan Hubungan Tinggi dan Diameter Eucalyptus pellita Umur 30 Bulan Suhartati, Tatik; Wahyudiono, Sugeng; Purwadi; Michael
Jurnal Wana Tropika Vol 13 No 1 (2023): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i1.596

Abstract

Inventory on Plantation Monitoring Assessment (PMA) Eucalyptus pellita at the aged of 30 months, measuring total height (h) and diameter at breast height (dbh). Height measurements were done using the Vertex. Measuring the total height of a tree whose crown has started to close (overlap)  requires more time to find the highest point of the tree, it is necessary to overcome it with a tool that is a height estimator model through the relationship between height and diameter at breast height (h-dbh). The study was conducted using two compartments of Eucalyptus pellita stands at the aged of 30 months. Sampling conducted by Systematic Sampling with Random Start. The data measured were total height (h) and diameter at breast height (dbh). Simple linear regression modeling h-dbh compiled for each compartment then carried out a goodness of fit test and validation using the Bias, SA and SR values, after that the regression line similarity was tested. The results showed that the two compartments have regression equations with the same slope and intercept, so that the two compartments can be threated as one dataset and the total height in the two compartments studied can be estimated using the equation h = 6,968 + 0,844 dbh.
Penilaian Hasil Penanaman Acacia crassicarpa menggunakan Plot Jalur dan Plot Lingkaran Suhartati, Tatik; Sigiro, Elyas Frankly Gregorius; Wahyudiono, Sugeng; Purwadi
Jurnal Wana Tropika Vol 15 No 1 (2025): MEI
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v15i1.2058

Abstract

Plantation quality assessment is very important for evaluating the success of seedlings in growth, especially in industrial plantations. This study aims to determine the most effective and accurate plot sampling method for assessing the survival and stocking of Acacia crassicarpa. Two types of sampling plots were compared, namely line plots and circular plots, by recording the number of alive and dead plants, as well as measuring the time required for each plot. Statistical analysis was conducted to present statistical descriptions (mean, standard deviation, standard error, and sampling error). Additionally, an independent samples t-test was performed between plot types, preceded by a Levene's test for homogeneity of variances. The results showed that plant density assessments differed between line plots and circular plots. For survival, there was no significant difference between the two plot types. In terms of time efficiency, line plots were superior because the sample area consisted of straight lines, while circular plots took longer to implement, especially during moving from one to another plot. Therefore, the choice of method depends on the assessment objective. For assessing the success of the plants under study, the strip plot is more stable for assessing plant density
Co-Authors Aan Budi Santoso Abdul Halik Abdurrahman, Zakaria Husein Adam Hidayah Adi Suhendra, Adi Afendy Widayat AHMAD JAMALUDIN Alfandi, Ricky Alfito Widiansyah Angela Nitia Nefasa Anggi Pangestu Anggraini, Adinda Arujisaputra, Erwin Teguh Baharuddin, Rismayada Bakti Wisnu Widjajani Boy, Ahmad Budi Prasetyo, Aris Catur Wibowo Budi Santoso, Catur Wibowo Budi Dana, Wahyu Seka Devri Suherdi, Devri Dicky Nofriansyah Dimas Deworo Puruhito, Dimas Deworo Dinna Hadi Sholikah Elfitriani Eudia Christina Wulandari evan saputra, evan Fadhilah, Nurul Aini Fani Ardiani Faridah, Ayumi Firmansyah, Erick Gantara Tino Pasomba Ghassani, Rizqi Giat Karyono Githa Noviana Hariyanti, Dwi Prasetiyawati Diyah Hendra Jaya Hidayah, Rizka Ibrahim, Farrel Iftika Miftahul Arzaqi Imam Radianto Anwar Setia Putra, Imam Radianto Anwar Setia Intan Rahmawati Ismiasih Jojok Dwiridotjahjon Jufri Halim jufri halim Karti Rahayu Kusumaningsih Kasimat, William Socrates Laksono Trisnantoro Lumban Gaol, Anggelina H M. Dimyati Huda Makhfud, Mukhamad Manoby, Worry Mambusy Mardhatilah, Dina Mawandha, Hangger Gahara Michael Muhammad Indika Fathiras Azhami Muniroh Munawar Nia Irawati, Nia Nur Zaini, Nur Nurjanah, Danik Perdana Afif Luthfy Permana, Budi Prastowo, Galang Purnomo Edi Sasongko Putri , Perdhani Yunia Raditiyanto, Satria Ratna Wahyu Pusari . . Rini, Mei Risda Novita Sari Ritonga, Muhammad Al-fatih Rizki, Fiorentina Cahaya Rohmah, Nur Hanifatul Rosidah Sabarudin, Didin Santoso, Handri Setia Putra, Imam Radianto Anwar Sigiro, Elyas Frankly Gregorius Siwi Istiana Dinarti, Siwi Istiana Solly Aryza Sugeng Wahyudiono Sugeng Wahyudiono, Sugeng Suhartati, Tatik Sutanto, Hari Prasetyo Tatik Suhartati Tini Apriani, Tini Usti Fatimah Sari Sitorus Pane Wahid Akbar Basudani Wahyu Nanda Eka Saputra, Wahyu Nanda Eka Wawan Priyanto, Wawan Yaarozatulo Harefa, Herman Yogi Saputra, Yogi Yusmedi Nurfaizal