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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management MEDIA KONSERVASI Forum Pasca Sarjana BIOTROPIA - The Southeast Asian Journal of Tropical Biology
I Nengah Surati Jaya
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Immunology & microbiology Veterinary

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Reforestation Achievement Monitoring at Mining Area through Soil Index Model Nining Puspaningsih; Kukuh Murtilaksono; Naik Sinukaban; I Nengah Surati Jaya; Yadi Setiadi
Jurnal Manajemen Hutan Tropika Vol. 16 No. 2 (2010)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The achievement of the reforestation is expected to reach a climax forest ecosystem. The objectives of this studywas to develop soil index model on monitoring of reforestation achievement. The study used a statistical approach to obtain soil index model to determine the achievement level of reforestation in mining area. The achievement indices for each variable were derived from the best regression model developed, while the weights of eachvariable were computed based on magnitude of regression coefficient for each indicator. The level of reforestationachievement index was initially developed by the use of 4 indicators, i.e. physical soil, biological soil, chemical soil, and litter index. Of those indicators, the study revealed that the heights weight for reforestation monitoring was chemical soil, which is composed pH, cation exchange capacity (CEC), macro-micro nutrient, and base saturation.
Quick Tecniques in Indentifying Open Area by the Use of Multi Spatial and Multidate Imageries Ahyar Gunawan; I Nengah Surati Jaya; Muhammad Buce Saleh
Jurnal Manajemen Hutan Tropika Vol. 16 No. 2 (2010)
Publisher : Institut Pertanian Bogor (IPB University)

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This study describes the use of multitemporal principal component analysis (MPCA) and vegetation index differencing (VIDN) techniques in identifying open area on post-coal mining sites using multi spatial and multidate of Landsat TM and SPOT 4 XS imageries. The study revealed that the synthetic images derived from stable brightness, stable greenness,s and delta brightness of MPCA summarize information on post-coal-mining opened areas provided overall accuracy of 76.47% for the new ex mining area and 32.69% for old ex mining area. The VIDN method provided relatively lower accuracy than those from MPCA i.e. 58.87% for new ex mining and 13.25% for old ex-mining areas. The study also concluded that identifying open area on post-coal-mining sites using imageries was more efficient than using only ground survey, providing cost efficiency of 29%. Thisindicates that the cost required using satellite image is only 29% of the cost required for ground survey. The study concluded that MPCA is better than VIDN for identifying open area on post-coal-mining sites.
Monitoring Vegetation Changes In Urban Area Using Landsat TM Imagery I Nengah Surati Jaya
Jurnal Manajemen Hutan Tropika Vol. 6 No. 1 (2000)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Paper ini mengulas tentang manfaat data penginderaan jauh, khususnya data Landsat TM untuk memantau dan mengumpulkan informasi tentang perubahan penutupan lahan di areal perkotaan yang mencakup perubahan penutupan yang terjadi antara tahun 1988 dan 1992 di sebagian kota Jakarta dan sekitarnya. Tiga metode deteksi perubahan yang diterapkan adalah : Perbandingan paska-klasifikasi (PCC) Klasifikasi multiwaktu langsung (DMC) Komponen utama multiwaktu 6-dimensi (6-D MPC). Hasil kajian memperlihatkan bahwa ketiga metode di atas dapat diterapkan untuk mendeteksi perubahan penutupan lahan di daerah perkotaan dan sekitarnya. Dari ketiga metode tersebut, meskipun metode DMC memberikan akurasi sedikit lebih tinggi daripada metode 6-D MPC, namun metode 6-D MPC memberikan beberapa keunggulan, diantaranya (1) perubahan vegetasi dalam luasan kecil dapat dideteksi dengan mudah melalui evaluasi nilai-nilai ¡§eigenvector¡; (2) deteksi perubahan lahan dapat dilakukan menggunakan beberapa band sintetis dengan jumlah band lebih sedikit dibandingkan DMC dan merangkum perubahan-perubahan yang dikehendaki serta klasifikasi dapat dilakukan lebih cepat. Penerapan metode PCC dikategorikan sebagai metode yang komplek, dimana untuk melokalisir lokasi perubahan, harus dibuat binary-mask perubahan  terlebih dahulu. Kajian ini juga menerangkan bahwa Landsat TM multiwaktu dapat digunakan untuk mendeteksi perubahan-perubahan kecil di daerah perkotaan.
Detecting Burnt Forest Damage Using Digital SPOT Imagery I Nengah Surati Jaya
Jurnal Manajemen Hutan Tropika Vol. 6 No. 1 (2000)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Mendeteksi kerusakan hutan melalui metode inventarisasi terestris dan/atau potret udara membutuhkan biaya yang mahal dan memakan waktu, khususnya untuk luasan yang besar. Dalam paper ini, penulis menguraikan kegunaan dari citra SPOT dijital untuk mendeteksi kondisi hutan paska kebakaran. Evaluasi dilakukan terhadap empat kelas kerusakan hutan yang terbakar. Studi ini memperlihatkan bahwa citra SPOT multispektral dapat digunakan untuk mengklasifikasi hutan terbakar menjadi kelas dengan tingkat kerusakan ringan, sedang, berat dan sangat berat. Analisis spasial yang juga dilakukan dalam studi ini memperlihatkan bahwa sebagian besar areal studi termasuk kategori kebakaran berat dan sangat berat. Meskipun hutan-hutan bekas tebangan baru cenderung mengalami intensitas kerusakan yang tinggi, kebakaran yang terjadi tahun 1998 tidak hanya membakar hutan bekas tebangan baru tetapi juga hutan bekas tebangan tua dan hutan primer.
Deteksi Kondisi Hutan Paska Kebakaran Melalui Citra Multisensor MOS-MESSR dan Landsat TM: Studi Kasus di Areal PT. MHP Sumatera Selatan I Nengah Surati Jaya; Endang Pujiastuti; Muhammad Buce Saleh
Jurnal Manajemen Hutan Tropika Vol. 6 No. 2 (2000)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

This paper presents how the multisensor MOS-MESSR and Landsat Thematic Mapper (TM) should be manipulated as tools for detecting land cover changes. Radiometric correction using image regression was recognized as useful approach to adjust pixel brightness value of MOS-MESSR. In this study, the standardized MPC showed comparable accuracy, similar to DMC method. Using this technique forest changes due to fire as well as land clearing were well recognized. Some recommendations and suggestions for improving classification accuracy of change detection using multisensor MOS-MESSR and Landsat TM were drawn up from this study.
Tehnik Mendeteksi Kebakaran Hutan Melalui Citra Satelit Multiwaktu: Studi Kasus di Propinsi Sumatera Selatan dan Riau I Nengah Surati Jaya; Muhammad Ikhwan; N Nurhendra; Soedari Hardjoprajitno
Jurnal Manajemen Hutan Tropika Vol. 6 No. 2 (2000)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

This paper describes the techniques for detecting forest and land fire. Of the three change detection techniques evaluated, i.e., post-classification comparison, multitemporal principal component and direct multitemporal classification, the multitemporal principal component, specifically that was derived from variance-covariance matrix (unstandardized principal component) was recognized to be suitable in detecting changes due to forest and land fires. The study found that the delta brightness, delta greenness, stable brightness and stable greenness indices derived from unstandardized multitemporal principal component analysis effectively summarized burnt-forest information. In this study, it was shown that Landsat TM provides information of totally and moderatelly burnt logged-over forest as well as burnt bush/shrub.
Efisiensi Penggunaan Potret Udara Non-Metrik Format Kecil dengan Tehnik Pengambilan Contoh Berganda I Nengah Surati Jaya; Agung Budi Cahyono
Jurnal Manajemen Hutan Tropika Vol. 7 No. 2 (2001)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

A comparison study on the efliciency of the use of smaN format non-metric aerial photographs(SFNAP) and conventional (metric) aerial photographs (CAP) was performed. The relative efficiency was computed based upon the implementation of double sampling with regression technique in comparison with the use of simple random sampling. The study found that, for estimating stand volume of teak wood, the SFNAP provided better sampling error as well as relative efficiency than those provided by the CAP. The relative efficiency of the SFNAP is 296.7% while therelative efficiency of the CAP is 225.7%. Economically this study expressed that, the use of the SFNAP for forest inventory using double sampling technique is cheaper than using the CAP.
Kajian Teknis Pemanfaatan Potret Udara Non-Metrik Format Kecil Pada Bidang Kehutanan I Nengah Surati Jaya; Agung Budi Cahyono
Jurnal Manajemen Hutan Tropika Vol. 7 No. 1 (2001)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

This paper describes the feasibility of small format non-metric aerial photographs (SFNAP) for forestry purposes. The analysis covers evaluation of the stereoscopic vision quality and the use of SFNAP for estimating stand variables such as tree height, crown diameter, crown density and number of trees. The study found that the SFNAPs were feasible to be applied for forestry purposes. Although the marginal information such as fiducial mark and nivo that usually used for determining the principal point and tilt are not available in the SFNAP, the study found that the stereoscopic vision could be made quite easy, and the stand variables could be well measured. Also, even though the SFNAPs were printed using enlargement process (not contact printing), the produced photographs were quite sharp and have good contrast.
Practical Technique for Detecting Mangrove Vegetation Using Digital Mos Messr and Landsat-5 TM Images: A Case Study in Karawang Cape, West Java I Nengah Surati Jaya; M. Buce Saleh; Rudi Ichsan Ismail; Hendri Nurwanto; Cecep Kusmana; Nobuyuki Abe
Jurnal Manajemen Hutan Tropika Vol. 7 No. 1 (2001)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Studi ini menerangkan bagaimana algoritme-algoritme indeks separabilitas dan akurasi klasifikasi seyogyanya diterapkan secara benar untuk mendeteksi obyek-obyek yang dikehendaki secara optimal. Studi ini menemukan bahwa akurasi Kappa dan kriteria Separabilitas (Transformed Divergence) harus digunakan secara simultan. Evaluasi dengan hanya menggunakan akurasi Kappa saja atau separabilitas saja akan memberikan hasil yang keliru. Algoritme-algoritme yang diterapkan diujicobakan pada data dijital MOS MESSR (Marine Observation Satellite Multispectral Self-Scanning Radiometer) dan Landsat TM (Thematic Mapper) untuk mendeteksi distribusi vegetasi mangrove. Studi ini memperlihatkan bahwa algoritme-algoritme yang diujicobakan pada MESSR dan TM berhasil mendeteksi distribusi mangrove secara baik, dengan akurasi pengguna (user accuracy) dan akurasi pembuat (producer’s accuracy) yang cukup tinggi berkisar antara 55% dan 100%.
Study on Spatial and Temporal Changes of Forest Cover Due to Canal Establishment in Peat Land Area, Central Kalimantan I Nengah Surati Jaya
Jurnal Manajemen Hutan Tropika Vol. 8 No. 2 (2002)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Artikel ini membahas tentang dampak dari pembangunan saluran irigasi terhadap distribusi spasial hutan dun lahan terbuka di eks pengembangan lahan gambut, Kalimantan Tengah. Untuk mengetahui kondisi penutupan hutan sebelum dun sesudah pembangunan saluran, digunakan citra Landrat TM rekaman tahun 1996 (sebelum pembangunan), 1998 dun 1999 (sesudah pembangunan). Hipotesis yang digunakan adalah penurunan air tanah sebagai akibat dari pembuatan saluran telah menjadi "driving force" perusakan lahan. Indikator yang digunakan dalam penelitian ini adalahpersentase distribusi lateral dari penutupan hutan serta terbukanya lahan-lahan kosong basah maupun kering di sekitar kanal. Penelitian ini menunjukkan adanya hubungan yang sistematis antara penurunan persentase penutupan hutan dun peningkatan persentase luas lahan terbuka dengan jarak dari saluran-saluran air yang dibangun, khususnya pada areal A. B dan C dimana satuan lahannya didominasi oleh lahan gambut. Penelitian ini sekaligus menggambarkan tentang peranan CIS dalam evaluasi gejala pemicu terjadinya kerusakan lingkungan.
Co-Authors Agung Budi Cahyono Ahyar Gunawan Andry Indrawan Anita Zaitunah Ari Ardelina Tatang Tiryana Muhdin, Ari Ardelina Tatang Tiryana Bambang Sapto Pratomosunu Diana Septriana Endang Suhendang Endes Nurfilmarasa Dahlan F Gunarwan Suratmo Fahmi Amhar Hanifah Ikhsani Hariaji Setiawan Hendri Nurwanto Hidayat Pawitan I Gusti Bagus Wiksuana Irdika Mansur Ismail HJ Hashim Iwan Gunawan Jarunton Boonyanuphap Kukuh Murtilaksono Lilik Budi Prasetyo Lukman Mulyanto M. Buce Saleh Moch. Anwar Muhammad Buce Saleh Muhammad Ikhwan N Nurhendra Naik Sinukaban Nining Puspaningsih Nitya Ade Santi Nobuyuki Abe Nurdin Sulistiyono Oteng Haridjaja R Assyfa El Lestari Rahimahyuni Fatmi Noor'an Rudi Ichsan Ismail Samsuri Samsuri Soedari Hardjoprajitno Susilawati . Tien Lastini Tirta Negara Yadi Setiadi