Browsing by Author "Basri, Hairul"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item ANALISIS TINGKAT KEPARAHAN KEKERINGAN DAN UPAYA MITIGASI BENCANA HIDROLOGIS DI SUB DAS KRUENG JREUE ACEH BESAR(2016-07-19) Helmi; Basri, Hairul; Sufardi; HelmiDrought is an act of nature most powerful on the availability of the water supply, both necessary for the benefit of agricultural and to human need.There are three phases of analysis to research the severity of this drought: (1) To identify station rainfall in the study areas. Monthly data precipitation using rain observation data ( 2005-2014) from 2 stations in Indrapuri and Jantho; (2) Analysis was conducted rainfall to get the drought meteorology of each station precipitation with the gauge standardized precipitation index ( SPI ); and (3) Analysis was conducted spline interpolate method index value dryness of each rainfall station to get scatter drought.The analysis by using the 3 monthly scale SPI method (SPI-3), The rainfall in 2005-2014 year had not a very dry because rainfall for 12 months from January until December for that 10 years, only on June-July-August (JJA) experienced dry conditions with the drought index averange among -0,80 until -1,00. The rest months September- October-November (SON), Desember-January-February (DJF) and March-April-May (MAM) in normal condition, with the -0,99-0,99 value range of the SPI.The hidrologis disaster mitigation may be done by structural (optimalize the development of the Krueng Jreue dam, rehabilitation and irrigation maintenance. Storage excess water in the rainy season for use in the dry season), and non structural (non structural to predict drought, reforestation, planting plant water saving, the use of mulch and organic matter)Item PERUBAHAN SIFAT FISIKA TANAH AKIBAT KONVERSI LAHAN DI EKOSISTEM HUTAN RAWA GAMBUT TRIPA PROVINSI ACEH (INDONESIA)(2016-07-14) Sufardi; Basri, Hairul; Ali, Syamaun A.; KhairullahKonversi lahan rawa gambut menjadi lahan kering akan mengganggu fungsi ekosistem lahan dan fungsi hidrologis tanah sehingga akan berdampak terhadap fisika dan hidraulika tanah. Untuk mengkaji dampak konversi hutan rawa gambut terhadap karakteristik fisika tanah di Ekosistem Hutan Rawa Gambut Tripa Provinsi Aceh telah dilaksanakan dengan menggunakan metode deskriptif melalui pengamatan tanah di lapangan dan analisis laboratorium. Pengambilan sampel tanah dilakukan pada lapisan atas (0-20 cm) dan lapisan bawah (40-60 cm) pada beberapa tipe pemanfaatan lahan dan jenis tanah. Karakteristik tanah yang diamati meliputi bulk density (BV), tekstur tanah, permeabilitas, porositas, dan kemampuan menyimpan air. Hasil penelitian menunjukkan bahwa setelah lahan gambut dikeringkan, maka sifat-sifat fisika tanah mengalami perubahan. Nilai BV tanah mengalami peningkatan, permeabilitas dan porositas mengalami penurunan, sehingga kemampuan mengikat air menjadi berkurang. Untuk mencegah degradasi fisik lahan, maka perlu dilakukan pengaturan tata air yang baik di ekosistem hutan rawa gambut Tripa