mk. dasar ilmu tanah. smno.jursntnh.fpub.febr2014
DESCRIPTION
PROFIL TANAH. Foto : smno.kampus.ub.janu2013. MK. DASAR ILMU TANAH. Smno.jursntnh.fpub.febr2014. DESKRIPSI HORISON TANAH. Pengenalan Horizon dan dimensinya Warna Tanah Komponen – Partikel primer Organisasi pertikel primer Rongga – pori - porositas Konsentrasi - PowerPoint PPT PresentationTRANSCRIPT
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MK. DASAR ILMU TANAH. Smno.jursntnh.fpub.febr2014
PROFIL TANAH
Foto: smno.kampus.ub.janu2013
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• Pengenalan Horizon dan dimensinya• Warna Tanah• Komponen – Partikel primer• Organisasi pertikel primer• Rongga – pori - porositas• Konsentrasi• Aktivitas Biologis• Reaksi / Kemasaman tanah• Samples
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH
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1. Simbol Horizon – Nomenklatur horison utama H, O, A, E, B, C dan R, dan karakteristik subordinate di dalam horison utama
2. Batas Horizon – kedalaman, kejelasan dan topografi
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH
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Pengenalan horison utama
Horison Organik:
H atau O
H = basah - wetO = kering - dry
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH
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Pengenalan horison utama
Horison Mineral:
A (bahan organik)E (eluviasi)B (iluviasi)C (bahan induk, tidak-padu)
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH
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Pengenalan horison utama
Horison Mineral:
R (batuan induk)
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH
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Karakteristik Subordinat dari horison utama:c Konkresi atau nodulf Tanah bekugPembentukan Gley , berupa becak-becakhAkumulasi bahan organikj Becak-becak Jarositk Akumulasi karbonatm Cementasi atau Indurasi
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH
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Karakteristik Subordinat dari horison utama:n Akumulasi sodiumo Akumulasi residu sesquioxidap Pembajakan/pengolahan tanahq Akumulasi silicar Reduksi kuats Illuvial akumulasi sesquioxidat Akumulasi liat silikat.
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH
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Karakteristik Subordinat dari horison utama:vKeberadaan plinthitw Perkembangan warna atau
structurex Karakter FragipanyAkumulasi gypsumz Akumulasi garam-garam yg lebih larut
daripata gipsum
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH
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• Warna Matrix – hue, value dan chroma, kondisi kering dan lembab, menurut Munsell Soil Color Charts, atau Revised Standard Soil Color Charts
• Becak-becak = Mottling – Banyaknya, Ukurannya, Kontras, Batas-batas, dan warnanya (kering dan lembab)
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON :WARNA TANAH
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• Tekstur tanah: – sand (Pasir), loamy sand, sandy loam, loam (Lempung), silt loam, silt (Debu), silty clay loam, silty clay, clay loam, sandy clay loam, sandy clay, clay (Liat)
• Fragmen Batuan – Kerikil = gravel, Batu-batu = stones, Batu besar = boulders
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH:KOMPONEN PRIMER
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• Struktur Tanah – grade, ukuran dan tipe– Tipe struktur: single grain, massive,
granular, prismatic, columnar, angular blocky, subangular blocky, platy, rock structure, struktur berstrata
• Konsistensi – Kondisi Kering, Lembab dan Basah
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH:ORGANISASI KOMPONEN PRIMER
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Pori, termasuk semua rongga dalam tanah, dideskripsikan dengan parameter:– Tipe– Ukuran– Kelimpahan– Kontinyuitas– Orientasi.
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH:RONGGA - POROSITAS
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• Cutanic features – clay, humus, pressure faces, slickensides, iron coatings
• Cementation dan compaction – kontinyuitas, struktur, sifat, derajat
• Nodul Mineral – abundance, kind, size, shape, hardness, nature, colour
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH:KONSENTRASI
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• Roots – kelimpahan dan ukurannya• Biological features – Kelimpahan
dan macamnya
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH:AKTIVITAS BIOLOGIS
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• Adanya carbonate – non-calcareous, slightly calcareous, moderately calcareous, strongly calcareous and extremely calcareous (uji dengan 10% HCl)
• pH di lapangan– Hellige test, pH-meter, uji NaF untuk tanah vulkanik
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH:REAKSI TANAH
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Ada dua metode pengambilan sampel tanah:– Sampling dengan proporsi yang sama
untuk semua horison– Sampling in equal proportions within a
depth of 20cm, either from the centre of the horizon, or at balanced intervals if the horizon exceeds 50cm thickness
Sumber: Soil Profile Description. Otto Spaargaren. ISRIC-World Soil Information. Wageningen The Netherlands
DESKRIPSI HORISON TANAH: SAMPLE
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Diunduh dari: http://blog.ub.ac.id/mastertommy/files/2013/01/panduan_deskripsi.pdf …. 13/2/2013
DESKRIPSI PROFIL TANAH
DILAKUKAN DI LAPANGAN
………. Selanjutnya ….….