Judul: Analisis perubahan penutupan lahan di hutan adat lekuk 50 Tumbi (lempur), kabupaten Kerinci provinsi Jambi
Abstrak: Kestabilan penutupan lahan hutan merupakan unsur penting untuk menjaga kelanjutan konservasi Hutan Adat Lekuk 50 Tumbi Lempur. Perubahan penutupan lahan di kawasan Hutan Adat Lekuk 50 Tumbi Lempur diakibatkan karena tuntutan ekonomi, sehingga masyarakat Lempur melakukan kegiatan konversi hutan menjadi pertanian monokultur kayu manis. Data dan informasi mengenai kondisi kawasan Hutan Adat Lekuk 50 Tumbi Lempur dapat dianalisis melalui teknologi Sistem Informasi Geografi (SIG). Tujuan penelitian ini adalah untuk (1) Mengukur besaran dan laju perubahan penutupan lahan Kawasan Hutan Adat Lekuk 50 Tumbi (Lempur) dan (2) Menganalisis penyebab terjadinya perubahan penutupan lahan yang ditinjau dari aspek sosial, ekonomi dan budaya masyarakat. Penelitian dilakukan selama 6 bulan, yaitu pada bulan Mei-Oktober 2010. Pengambilan data sosial ekonomi dan cek lapangan (Ground check) dilakukan di Kawasan Hutan Adat Lekuk 50 Tumbi (Lempur) pada bulan Juli-Oktober 2010. Data yang dikumpulkan meliputi data spasial berupa peta, citra dan ground control point dan data atribut berupa data kependudukan, data perubahan penutupan lahan dan persepsi masyarakat. Data spasial diolah dengan metode sistem informasi geografis dan penginderaan jauh. Sedangkan data atribut diolah secara deskriptif kemudian dianalisis secara kualitatif untuk mengetahui pengaruhnya terhadap perubahan penutupan lahan yang terjadi. Penutupan lahan dan penggunaan lahan yang ada di Kawasan Hutan Adat Lekuk 50 Tumbi Lempur dari tahun 1988-2008 berdasarkan hasil survei dikelompokkan menjadi empat kategori. Tipe penutupan dan penggunaan lahan tersebut adalah hutan, kebun kayu manis, semak dan lahan terbuka. Tipe penutupan lahan yang mengalami peningkatan luas wilayah dalam jumlah yang paling besar adalah kebun kayu manis. Penutupan lahan kebun kayu manis mengalami peningkatan pada tahun 2008 sebesar 62,06 ha atau 158,18% lebih luas dibandingkan dengan tahun 1988. Tipe penutupan lain yang mengalami peningkatan luas wilayah adalah semak belukar. Penutupan lahan semak belukar ini mengalami peningkatan luas sebesar 3,09 ha atau 28,36% lebih luas dibandingkan dengan tahun 1988. Dalam kurun waktu 1988 sampai 2008, tutupan lahan hutan mengalami penurunan luas wilayah sebesar 57,91 ha atau 12,18% dari luas tahun 1988. Penyebab terjadinya perubahan penutupan lahan yang ditinjau dari aspek sosial, ekonomi dan budaya masyarakat adalah tingginya harga kayu manis, melemahnya pelaksanaan mekanisme adat, jumlah dan kepadatan penduduk serta mata pencaharian
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Judul: Analysis of Land Cover Changes in the Lekuk 50 Tumbi (Lempur) Customary Forest, Kerinci Regency, Jambi Province
Abstrak: Stability of forest land cover is an important element to maintain the sustainibility of Lekuk 50 Tumbi Lempur Customary Forest conservation. Land cover changes in the area of Lekuk 50 Tumbi Lempur Customary Forest caused by economic demands, so Lempur society perform activities of forest conversion from forest to cinnamon monoculture. Data and information about the condition of Lekuk 50 Tumbi Lempur Customary Forest can be analyzed by Geographic Information System (GIS). Aim of this study is (1) to measure amount and rate of land cover changes of Lekuk 50 Tumbi Lempur Customary Forest and (2) to analyze the causes of land cover changes from social, economic and cultural aspects.This research carried out for 6 months, during May until October 2010. Social and economic data and ground check, taked and performed on Lekuk 50 Tumbi Lempur Customary Forest during July until October 2010. Data collected include spatial data i.e. maps, Landsat image, and ground control points and attribute data in the form of rural data, land cover change data and society perception. Spatial data is processed using geographical information systems and remote sensing method. While the attribute data was processed descriptive then analyzed qualitatively to determine the impact on land cover change that occurred. Land cover and land use in the Lekuk 50 Tumbi Lempur Customary Forest from 1988 until 2008 based on the survey are grouped into four categories. Land cover and land uses types are forest, cinnamon monoculture, shrubs and open land. Land cover types that have the increased in the area of greatest number is cinnamon monoculture. In 2008, Cinnamon monoculture cover has increased 62,06 ha or 158,18% wider than 1988. Other cover types that have increased the area is shrubs. The increased of shrub land cover area is 3,09 ha or 28,36% wider than the year 1988. In the period of 1988 until 2008, forest land cover decreased 57,91 hectares or 12,18%. The causes of land cover change in social, economic and cultural community aspects is the price of cinnamon that expensive, the weakening of traditional mechanisms implementation, the number and density of population, and livelihood., Stability of forest land cover is an important element to maintain the sustainibility of Lekuk 50 Tumbi Lempur Customary Forest conservation. Land cover changes in the area of Lekuk 50 Tumbi Lempur Customary Forest caused by economic demands, so Lempur society perform activities of forest conversion from forest to cinnamon monoculture. Data and information about the condition of Lekuk 50 Tumbi Lempur Customary Forest can be analyzed by Geographic Information System (GIS). Aim of this study is (1) to measure amount and rate of land cover changes of Lekuk 50 Tumbi Lempur Customary Forest and (2) to analyze the causes of land cover changes from social, economic and cultural aspects.This research carried out for 6 months, during May until October 2010. Social and economic data and ground check, taked and performed on Lekuk 50 Tumbi Lempur Customary Forest during July until October 2010. Data collected include spatial data i.e. maps, Landsat image, and ground control points and attribute data in the form
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Judul: Peluang Partikel Plasma Berada Pada Dimensi Debye Akibat Gangguan Gelombang Elektromagnetik dengan Menggunakan Persamaan Schrödinger
Abstrak: The solution of Schrodinger equations with plasma Coulomb potential in spherical coordinat results solution wave function and energy plasma particle. Electron probability density at Debye length with thermal effect same as ion, which indicates plasma in neutral state. Electromagnetic waves perturbation of an electric field given to result wave function perturbation system. The probability density of plasma particle due to electromagnetic waves perturbation is the largest when an electromagnetic waves frequency 1.41 times the plasma frequency .
Keyword: Schrödinger, plasma, electromagnetic wave