Judul: Kurva tinggi pohon tegakan mangium (Studi Kasus di IUPHHK-HT PT. Hutan Rindang Banua Kalimantan Selatan)
Abstrak: Kegiatan inventarisasi hutan merupakan langkah awal mengetahui luas dan potensi suatu tegakan hutan. Pelaksanaan inventarisasi hutan di lapangan seringkali mendapat kendala dalam melakukan pengukuran. Faktor-faktor yang mempengaruhi kegiatan inventarisasi hutan di lapangan dapat berasal dari faktor topografi, alat, iklim maupun manusia. Data inventarisasi merupakan data dimensi pohon yaitu diameter pohon dan tinggi pohon. Pengambilan data diameter pohon relatif mudah dilakukan sedangkan pengambilan data tinggi pohon seringkali mendapat kendala sehingga perlu disediakan alat bantu kurva tinggi yang digunakan untuk menaksir tinggi suatu pohon berdasarkan diameter pohon. Pada hutan tanaman, kurva tinggi pohon total akan digunakan sebagai penduga kualitas tapak (site quality). Penelitian ini dilaksanakan di lokasi Kintap dan Satui IUPHHK-HT PT. Hutan Rindang Banua Kalimantan Selatan. Pengambilan data dilakukan pada bulan Agustus 2010. Alat yang digunakan dalam penelitian ini yaitu : GPS Garmin 60 CSx ; hagameter; phi-band; peta areal kerja; tongkat (galah) sepanjang 4 meter; kamera digital dan Tally Sheet. Objek penelitian adalah tegakan Mangium kelas umur II, III dan masak tebang di lokasi Kintap serta kelas umur III lokasi Satui. Hasil analisis regresi diperoleh persamaan kurva tinggi total pohon (H) dengan diameter setinggi dada (D). Persamaan yang diperoleh untuk kelas umur II pada lokasi Kintap memiliki nilai koefisien determinasi (R2) 0,9068. Persamaan untuk kelas umur III memiliki nilai koefisien determinasi (R2) 0,94958. Persamaan untuk kelas masak tebang memiliki nilai koefisien determinasi (R2) 0,9117, sedangkan persamaan untuk kelas umur III lokasi Satui memiliki nilai koefisien determinasi (R2) 0,9064. Persamaan yang dapat digunakan untuk menyusun kurva tinggi pohon pada lokasi Kintap kelas umur II adalah H = 3.161113* (D0.459499), kelas umur III H = 4,253375 (D0,432745), kelas masak tebang H = 15,99340196 + (0,156172*D) dan pada lokasi Satui kelas umur III adalah H = 8,297728237 + 0,421897(D).
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Judul: Penyusunan Kurva Tinggi Pohon Dalam Rangka Pelaksanaan IHMB Di IUPHHK-HA PT. Ratah Timber Kalimantan Timur
Abstrak: In effort to gain the sustainable forest, management of forest is needed through forest management planning with accurate, rational, and in direction. For that reason is it necessary to create activity of IHMB. The purpose of this activity is to detect or measure timber standing stock periodically, also as trend monitoring sustainability of standing stock in IUPHHK areas. The availability of supporting tools in IHMB is very needed in order to accelerate the activity and decreasing an error that might be happen in measurement. One of supporting tools is tree height curve that used to estimate height of the standing tree in forest stand where measured, and at the last we can estimate the standing stock. This research conducted to arrange the tree height curve for Dipterocarpaceae species and mixture timber species in future aims can useful as supporting tools in implementation of IHMB activities in PT. Ratah Timber East Kalimantan. In this research, sample trees that carried out for Dipterocarpaceae species is 201 trees sampling with the specification 135 trees for modeling and 66 trees for validation. Meanwhile, for mixture timber species is 192 trees sampling with the specification 129 trees for modeling and 63 trees for validation. That trees sampling is chosen by purposive sampling method with the requirements of trees sampling is spread in around of IUPHHK-HA PT. Ratah Timber East Kalimantan areas. The chosen of trees sampling condition should have good growth and healthy. From the result of this research through modeling and validation method, we can get the best of tree height estimation for Dipterocarpaceae species is Tbc = 5.383D0.354 and Tt = 8.770D0.326. In other hand, for mixture timber species is Tbc = 5.754D0.322 and Tt = 8.954D0.310. From the slope uniformity significance and elevation through those equation, so it can be concluded that the relation between height of tree (Tbc and Tt) with diameter of tree from Dipterocarpaceae species and mixture timber species is similar, so both of those regression can combined as one of regression uniformity form combination. Form of that regression uniformity form combination is Tbc = 5.534D0.340 and Tt = 8.851D0.319.
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Judul: Karakteritsik kimia dan organoleptik tablet effervescent putih telur bersitarasa lemon dengan konsentrasi effervescent mix yang berbeda
Abstrak: Egg is an animal origin food product which has high nutritional value especially protein. Cholesterol content of eggs is only found in egg yolk, on the other hand albumen does not countain cholesterol at all but high content of protein, so it can be used as a free cholesterol-protein sources. The application of albumen as egg instant drink effervescent tablet can be an alternative of protein source for people who need free-cholesterol diet. It can also become an egg product diversification.
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