STUDI DEGRADASI LAHAN DAS BIRU KABUPATEN WONOGIRI TAHUN 2013

Istifarida, Binti (2013) STUDI DEGRADASI LAHAN DAS BIRU KABUPATEN WONOGIRI TAHUN 2013. Other thesis, Universitas Sebelas Maret.

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    Abstract

    Penelitian ini menggunakan metode survai. Populasi penelitian adalah lahan di DAS Biru. Teknik pengambilan sampel dengan cara Purposive Sampling. Teknik pengumpulan data dengan dokumentasi dan observasi. Teknik analisis data untuk penentuan kelas degradasi lahan menggunakan analisis cluster, sedangkan untuk mengetahui faktor yang berpengaruh menggunakan analisis diskriminan.untuk mengetahui hubungan sosial ekonomi terhadap degradasi lahan menggunakan analisis crosstab dengan mengkonversi unit satuan lahan ke unit administrasi dengan teknik dominan, serta untuk menentukan arahan konservasi lahan dilakukan dengan pencocokan (matching). Analisis peta menggunakan aplikasi SIG (Sistem Informasi Geografis). Berdasarkan analisis data, dapat disajikan hasil penelitian sebagai berikut : (1) Kelas degradasi lahan di DAS Biru terbagi membaji dua kelas, yaitu kelas tidak terdegradasi sebesar 742,89 ha dan kelas terdegradasi seluas 1648,55 ha (2) Faktor yang berpengaruh terhadap degradasi lahan yaitu faktor kedalaman efektif tanah dan penggunaan lahan (3) Tidak ada hubungan antara kondisi sosial ekonomi masyarakat terhadap degradasi lahan, hal ini dapat dilihat dari nilai chisquare hitung (3,429) < chi-square tabel maka Ho diterima, (4) Terdapat delapan arahan konservasi lahan DAS Biru berdasarkan kemiringan lereng, kedalaman efektif tanah dan penggunaan lahannya. Konservasi vegetatif menerapkan sistem reboisasi, wanatani, dan hutan rakyat, Reboisasi ini dimaksudkan untuk mendapatkan tutupan lahan yang lebih baik sehingga mampu melindungi tanah dari proses erosi. Peggunaan lahan semak belukar menjadi hutan ini selain memberi keuntungan bagi kelastarian lahan tentunya juga memberikan keuntungan dari segi ekonomi berupa komoditas hasil hutan. Sedangkan untuk konservasi mekanik menerapkan sistem sumbat jurang untuk mengurangi laju erosi, selain itu juga menggunakan saluran pembuangan air dan dam pengendali air, untuk menahan laju aliran permukaan sekaligus manampung hasil erosi dari bagian hulu/ atas supaya tidak menimbulkan sedimentasi. Kata Kunci : Degradasi lahan, diskriminan, kondisi sosial ekonomi, arahan konservasi The purpose of this research is to : (1) Discover land degradation and its expansion, (2) Identify factors which affects land degradation level, (3) Identify the connection between social economic factors and land degradation level and, (4) Identify directives in land conservation policy in DAS Biru. This research employs survey method. The population of this research is an area in DAS Biru. The sampling method used in this research is Purposive Sampling method. The data were collected by observation and documentation method. Cluster analysis is used as data analysis method to determine the land degradation level, discriminant analysis is used to determine the influential factors toward land degradation level. Crosstab analysis is used to identify the connection between social economic factors toward land degradation level by converting land area unit into administrative unit by using dominance technique, and matching technique is used to determine the directions in land conservation policy. Map is analyzed by using SIG (Geographical Information System) application. According to the data analysis, the findings are as follow : (1) That degradation level in DAS Biru is devided into two classes, they are the non degraded class; 742,89 ha, and the degraded class; 1648,55 ha, (2) The factors which affects land degradation level are land efective depth and land utilization, (3 There is not any sigificant connection between people‟s social economic condition and land degradation level, this can be seen from the value of chisquare count (3,429) < chi-square table so that Ho is received, (4) That there are eight directions in land conservation in DAS Biru according to the land slope, land effective depth, and its utilization. Vegetative conservation applies reforestation system, agroforestry, and community forest. Reforestation aims to achieve better land quality coverage so that it can protect the land from erosion process. The utilization of underbrush area into forest not only has the advantage for land preservation but also gives economical value from the forest products commodity. For mechanical conservation, ravine blocks system is applied to reduce erosion force, drainage system and water controlling dams are functioned to restrain the force of surficial water flow and to retain erosion result from the upper course of the river so that it does not cause sedimentation. Key Words : land degradation, discriminant, social economic condition, conservation directives

    Item Type: Thesis (Other)
    Subjects: H Social Sciences > H Social Sciences (General)
    L Education > L Education (General)
    Divisions: Fakultas Keguruan dan Ilmu Pendidikan
    Depositing User: Miftahful Purnanda
    Date Deposited: 03 May 2014 18:21
    Last Modified: 03 May 2014 18:21
    URI: https://eprints.uns.ac.id/id/eprint/14572

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