Browsing by Author "Umar, Iswandi"

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    Model Dinamik Pertumbuhan Penduduk Dan Kualitas Lingkungan Di Kota Padang, Provinsi Sumatera Barat
    (wahyu sari yeni, 2018-08-19) Dewata, Indang; Umar, Iswandi
    Jumlah penduduk yang banyak merupkan masalah utama di banyak negara berkembang. Pertumbuhan penduduk yang tinggi berdampak terhadap kualitas lingkungan. Tujuan penelitian ini mengambarkan permodelan dinamis dan dampak pertumbuhan penduduk terhadap kualitas lingkungan di Kota Padang. Metode yang digunakan dalam permodelan dinamik adalah pendekatan sistem dengan menggunakan software powersim 10. Kota Padang memiliki angka pertumbuhan penduduk sekitar 1,3 persen/tahun pada periode 2000-2016, dan diperkirakan pada tahun 2050 jumlah penduduk meningkat menjadi 951.071 jiwa. Jumlah sampah yang diproduksi setiap tahun sebanyak 2.376 ton/tahun, dan akan meningkat menjadi 2.378 pada tahun 2050. Oleh karena itu, maka perlu adanya peran pemerintah dalam mengontrol pertumbuhan penduduk dan memperbaiki kualitas lingkungan.
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    Penataan Lahan Pertanian Berkelanjutan Pada Lereng Gunung Marapi Provinsi Sumatera Barat
    (wahyu sari yeni, 2019-01-09) Umar, Iswandi
    Land use for agriculture has increased every year. As a result of the increased need for agricultural land causing degradation of agricultural land. The purpose of this study was to conduct structured directives for agricultural land use. To determine the direction of structuring the use of agricultural land using a geographic information system approach. The indicator used in determining the arrangement of sustainable agricultural land use is; slope, soil type, rainfall, geology, and land use. Furthermore, to determine the direction of policy on the use of agricultural land using the ISM approach. The results of the land structuring analysis of the slopes of Mount Marapi show that around 35 percent of agricultural land cannot be utilized for cultivation areas. Actual conditions, around 20 percent of the area has been used for farm land. herefore, as a policy direction for sustainable land use the government must conduct land use counseling in accordance with the carrying capacity of the land
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    Permodelan Dinamis Pengelolaan Zona Rawan Banjir Kabupaten Lima Puluh Kota
    (wahyu sari yeni, 2019-01-03) Barlian, Eri; Dewata, Indang; Umar, Iswandi
    The flood disaster has caused many losses to human life. In an effort to reduce the impact caused by natural disasters, it is necessary to have disaster mitigation. Making maps of flood-prone zones is one form of non-structural mitigation. The purpose of this study was to determine the zoning level of flood vulnerability, design a dynamic model of flood vulnerability, and develop a floodprone area policy in Limapuluh Kota Regency, West Sumatra Province. The method used for the manufacture of flood-prone zones using a geographic information system (GIS) using GIS 10.1 software, then to determine dynamic modeling using a systems approach analyzed with powersim 10. Conclusion 1) Land use for gambir plants (Uncaria Gambir) has a large impact against floods. The mining activities of the excavated land also have a significant effect on the increase in flood disasters. 2) The study area consisted of three flood-prone zones, namely high vulnerability, 6.2% of the total area, prone zones while 50.6% zones were around 43.2% low hazard zones
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    Zona Rawan Longsor Pada Kawasan Permukiman Di Kabupaten Tanah Datar
    (wahyu sari yeni, 2018-08-19) Umar, Iswandi; Dewata, Indang; Barlian, Eri; Hermon, Dedi
    Natural disasters will bring harm to human life, and one of the efforts to minimize that is with disaster mitigation. Determination of landslide hazard zones in settlement areas is part of mitigation efforts in the sustainable use of land resources. The purpose of this study is to map the landslide hazard zone in the settlement area in Tanah Datar District. For the determination of landslide hazard zone, an overlay method is used by scoring technique using geographic information system (GIS). The analysis shows that Tanah Datar District has 35,6 percent of high landslide hazard areas, and about 38 percent of settlement areas are in high landslide hazard zones