Kajian Karakteristik Lahan Kawasan Relokasi Pengungsi Erupsi Gunung Sinabung Kabupaten Karo Sebagai Dasar Penggunaan Lahan Berbasis Pengelolaan DAS

Study of the characteristics of the land in the area of refugee relocation eruption of Mount Sinabung intended as a basis for the use of land-based watershed management in the region has been carried out in November and December 2014. The study was conducted using a survey at the site which is administered in the village of Nagara, Pertibi Lama and Pertibi Tembe Tiga Panah Sub District Karo District. Field observations carried out on the physical characteristics of the land and soil sampling for laboratory testing of physical, chemical and biological soil. The study also conducted bassed secondary data sourced from the analysis of various thematic maps such geological maps, soil type maps, topographic maps and maps of watershed areas. The results showed that the area of Mount Sinabung relocation is in the upstream region of two important watersheds in North Sumatra and Aceh, which Wampu Watershed and Singkil Watershed, the dominant topography sloping to undulating located at a height of more than 1,550 m above sea level. Land in refugee relocation sites Sinabung classified into subgroups Andic andik Dystropept which has properties (smeary or thixotropic), the soil is very loose (BD <0.8 g / cm3) and high content of organic matter in the upper layers of the soil pH suitable for upland crops, and the number (population) microbes are also high