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Struktur Bawah Tanah

Dampak Pada Tanah. dan. Struktur Bawah Tanah. Oleh : Ir. M. Arief Azis, MT, Dipl. Ing. KOMPONEN LINGKUNGAN HIDUP. Dampak Positif(+)& Negatif (-). Usaha/Kegiatan Pembanguna. Rona Lingkugan Hidup. Abiotik. Biotik. Culture. Abiotik :. Iklim, Kelembaban Udara dan Kebisingan Fisiografi

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Struktur Bawah Tanah

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  1. Dampak Pada Tanah dan Struktur Bawah Tanah Oleh : Ir. M. Arief Azis, MT, Dipl. Ing

  2. KOMPONEN LINGKUNGAN HIDUP

  3. Dampak Positif(+)& Negatif (-) Usaha/Kegiatan Pembanguna Rona Lingkugan Hidup Abiotik Biotik Culture

  4. Abiotik : • Iklim, Kelembaban Udara dan Kebisingan • Fisiografi • Hidrologi • Hidrooceanografi • Ruang, Lahan dan Tanah dan Struktur Bawah Tanah

  5. Tanah Tanah Sebagai SDA bermakna • Produk alam berupa bahan hancuran yang berasal dari pelapukan batuan • Media alami dipermukaan bumi yang lunak dimana tumbuhan dapat hidup Media Tumbuh Bagi Tumbuh-tumbuhan • Sumber Unsur Hara Bagi Tumbuhan • Media Tempat Akar, Air dan Unsur Hara Tersimpan

  6. PREDIKSI EROSI THE UNIVERSAL SOIL-LOSS EQUATION (Wischmeier & Smith 1965) : Erosion is a function of MANAGEMENT EROSIVITY EROSIVITY RAINFAAL PHYSICAL CHARACTERISTICS ENERGY LAND MANAGEMENT R K A = X X LS X P X C CROP MANAGEMENT A = Mean annual soil loss (ton/hektar/tahun) R = Rainfall erositivy index LS = Factor siope lenghth (L) and slope steepness (S) P = conservation practice factor C = Crop factor

  7. Macam Erosi : Erosi Percikan (Rainsplash Erosion) Erosi Lembar/Permukaan (Sheetwah Erosion) Erosi Alur (Riil Erosio) > 30 cm depth Erosi Parit (Gully Erosion) > 30 cm dept dan width Rainfall ersivity index (R) KE = 13,32 + 9,78 Log10 I KE = Kinetic energy in Jole/m². mm I = Rainfall intensity (mm/hour) For tropical, Hudson (1965) gives the equation : KE = 29,8 - 127,5 I Soil erobility indeks (K) Pecent Organic material Texture (sand, silt & very fine sand) Soil structure Permeability

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