ANALISIS KEKRITISAN DAERAH RESAPAN AIR DI DAS SAMIN HULU KECAMATAN TAWANGMANGU KABUPATEN KARANGANYAR TAHUN 2013

Wijayanto, Tejo (2013) ANALISIS KEKRITISAN DAERAH RESAPAN AIR DI DAS SAMIN HULU KECAMATAN TAWANGMANGU KABUPATEN KARANGANYAR TAHUN 2013. Other thesis, UNIVERSITAS SEBELAS MARET.

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    Abstract

    Tejo Wijayanto. ANALISIS KEKRITISAN RESAPAN AIR DAS SAMIN HULU DI KECAMATAN TAWANGMANGU TAHUN 2013. Skripsi, Surakarta: Fakultas Keguruan dan Ilmu Pendidikan, Universitas Sebelas Maret Surakarta. Juli 2013 Tujuan penelitian ini: (1) Mengetahui kondisi daerah resapan potensial di DAS Samin Hulu Kecamatan Tawangamngu. (2) Mengetahui kondisi daerah resapan aktual di DAS Samin Hulu Kecamatan Tawangmangu. (3) Mengetahui kekritisan daerah resapan air di DAS Samin hulu Kecamatan Tawangmangu. (4) Mengetahui distribusi kekritisan daerah resapan air di DAS Samin hulu Kecamatan Tawangamngu. Metode yang digunakan dalam penelitian ini adalah deskriptif spasial. Populasi pada penelitian ini adalah seluruh satuan lahan yang berada di DAS Samin Hulu Kecamatan Tawangmangu. Teknik pengambilan sampel dengan menggunakan purposive sampling, yaitu sampel yang dipilih berdasarkan pada ciri-ciri atau sifat-sifat tertentu yang dapat mewakili suatu sampel. Teknik pengumpulan data yang digunakan adalah analisis dokumentasi, observasi lapangan dan analisis laboratorium. Teknik analisis yang digunakan untuk mengetahui kondisi resapan potensial adalah skoring terhadap parameter kemiringan lereng, permeabilitas tanah dan intensitas curah hujan. Teknik analisis yang digunakan untuk mengetahui kondisi resapan aktual adalah skoring parameter penggunaan lahan. Teknik analisis yang digunakan untuk menentukan kondisi kekritisan resapan air adalah pembandingan antara kondisi resapan potensial dengan kondisi resapan aktual. Teknik analsisis untuk mengetahui distribusi kekritisan resapan air adalah analisis kualitatif pada peta kekritisan resapan air dan analisis kualitatif terhadap berbagai parameter fisik. Berdasarkan hasil penelitian dapat disimpulkan bahwa (1) Terdapat empat kondisi resapan potensial. Luasan kondisi resapan potensial kecil 158,31 ha (3,05%), kondisi resapan potensial sedang 3892,27 ha (74,94%), kondisi resapan potensial besar 1079,49 ha (20,78%) dan kondisi resapan potensial sangat besar 63,74 ha (1,23%). (2) Terdapat empat kondisi resapan aktual. Luasan kondisi resapan aktual kecil 1285,96 ha (24,76%), kondisi resapan aktual agak kecil 1214, 87 ha (23,39%), kondisi resapan aktual sedang 539,38 ha (10,38%) dan kondisi resapan aktual besar 2153,6 ha (41,46%). (3) Terdapat enam kondisi kekritisan resapan air. Luasan kekritisan resapan air baik 2198,39 ha (42,33 %), kekritisan resapan air normal alami 473,75 ha (9,12%), kekritisan resapan air mulai kritis 1071,92 ha (20,64%), kekritisan resapan air agak kritis 664,54 ha (12,79%), kekritisan resapan air kritis 758,94 ha (14,61%), dan kekritisan resapan air sangat kritis 26,26 ha (0,51%). (4) Sebaran kondisi kekritisan resapan air baik dan nomal alami cenderung berada lahan yang memiliki jenis penggunaan lahan hutan dan semak belukar pada bentuklahan atas. Sebaran kondisi kekritisan resapan air yang mengalami penurunan kualitas (mulai kritis, agak kritis, kritis dan sangat kritis) cenderung berada pada lahan yang memiliki penggunaan lahan tegalan, permukiman dan sawah pada bentuklahan lereng tengah dan lembah. Kata Kunci : Kondisi resapan potensial, kondisi resapan aktual, kekritisan resapan air dan distribusi kekritisan resapan air. Tejo Wijayanto. ANALYSIS OF CRITICAL WATER INFILTRATION OF SAMIN UPSTREAM WATERSHED TAWANGMANGU DISTRICT ON 2013. Thesis, Surakarta: Faculty of Teacher Training and Education, Sebelas Maret University. 2013th July. The purposes of this research is to: (1) know the condition of potential water infiltration area of Samin Upstream Watershed (2) know the condition of actual water infiltration area of Samin Upstream Watershed (3) know the level of critical water infiltration area of Samin Upstream Watershed (4) know the spatial distribution of critical water infiltration area of Samin Upstream Watershed. The method that used in this research is descriptive spatial method. Population in this research are all of the land units of Samin Upstream Watershed Tawangmangu District. The Sample had taken by purposive sampling,that was choosen based on characteristics that could represent a population. Data collection technique that used in this research are documentation analysis, field observation, and laboratory analysis. Analysis technique that used to know the condition of potential water infiltration area is parameter scoring of slope steepness, soil permeability, and rain intensity. Analysis technique that used to know the condition of actual water infiltration area is scoring of landuse parameter. Analysis technique that used to determine the level of critical water infiltration area is matching between the condition of potential water infiltration area with the condition of actual water infiltration area. Analysis technique to know the spatial distribution of critical water infiltration area was using qualitative analysis based on map of critical water infiltartion level and qualitative analysis of all physical parameter. Based on the research, could be concluded that (1) Those are four condition of potential water infiltration area : low potential condition of water infiltration area is 158,31 ha (3,05%), medium potential condition of water infiltration area is 3892,27 ha (74,94%), high potential condition of water infiltration area is 1079,49 ha (20,78%) and very high potential condition of water infiltration area is 63,74 ha (1,23%). (2) Those are four actual condition of water infiltration area: actual condition of low water infiltration area is 1285,96 ha (24,76%), actual condition of less water infiltration area is 1214, 87 ha (23,39%), actual condition of medium water infiltration area is 539,38 ha (10,38%) and actual condition of high water infiltration ara is 2153,6 ha (41,46%). (3) Those are six condition of critical water infiltration area: condition of good critical water infiltration area is 2198,39 ha (42,33 %), condition of naturally normal critical water infiltration area is 473,75 ha (9,12%), condistion of almost critical water infiltration area is 1071,92 ha (20,64%), condition of less critical water infiltration area is ha 664,54 (12,79%), condition of critical water infiltration area is 758,94 ha (14,61%), and condition of very critical water infiltration area is 26,26 ha (0,51%). (4) Spatial distribution of condition of good critical water infiltration and naturally normal critical of water infiltration is tend to be on land with forest and bush as kind of landuse on upper landform. Spatial distribution of almost critical, less critical, critical condition and very critical water infiltration area is tend to be on land with moor, settlement and paddy field as kinds of landuse on middle landform and lowland landform. Keywords : condition of potential water infiltration area, condition of actual water infiltration area, condition of critical water infiltration area, and spatial distribution of critical water infiltration area.

    Item Type: Thesis (Other)
    Subjects: Q Science > QE Geology
    Divisions: Fakultas Keguruan dan Ilmu Pendidikan > Pendidikan Geografi
    Depositing User: Satria Nur Fauzi
    Date Deposited: 05 May 2014 23:15
    Last Modified: 05 May 2014 23:15
    URI: https://eprints.uns.ac.id/id/eprint/14997

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