Abstract
This unlicensed gold mining activity (PETI) can have a positive impact on the economy of the community, in the form of increased incomes so that it can improve the welfare of the community. However, besides having a positive impact, PETI's activities will harm the environment around the mining area. The negative impact caused by mining activities is environmental damage in the form of a decrease in land quality as indicated by a decrease in physical, chemical and biological soil quality. The purpose of this study was to determine the nutrient content and the total of microbes in former PETI soils in sub-districts of the Kuantan Singingi Regency. The parameters observed were analysis of nutrient content consisting of analysis of sand, dust, clay, soil pH, C-organic, N-total, P2O5, K2O, interchangeable cations, CEC, a saturation of bases, Aluminum Saturation, and analysis of total soil microbes. The results showed that the Singingi sub-district, Central Kuantan sub-district, Sentoja sub-district, and Logas Tanah Darat sub-district has the texture of sand soil clay to sand, the content of pH H2O Land classified as fertility is very sour, C-Organic (%), Ca-dd, Nitrogen-Total (%), Mg-dd and CEC with very low fertility criteria, C/N Ratio with low to very low fertility criteria, K-dd content with low criteria, Na-dd with moderate to very high criteria, aluminum saturation is very high with wet saturation the fertility criteria are low. The total microbes in the Sub-district of Sentoja Raya and Logas Tanah Darat Sub-district are much higher than Singingi Sub-district and Central Kuantan Sub-district.
Highlights
Kegiatan penambangan adalah salah satu kegiatan pemanfaatan sumberdaya alam
The results showed that the Singingi sub-district, Central Kuantan sub-district, Sentoja sub-district, and Logas Tanah Darat sub-district has the texture of sand soil clay to sand, the content of pH H2O 5,75-6,64 is rather sour, C-Organic 0,07-0,26%, Ca-dd 0,025-0,050 me/100g, Nitrogen-Total 0,02-0,03%, Mg-dd 0,09-0,17 me/100g and CEC 1,39-2,11 me/100g with very low fertility criteria, C/N Ratio 3,50-8,67 with low to very low fertility criteria, K-dd content 0,24-0,31 with low criteria, Na-dd 0,08-1,19 me/100g with moderate to very high criteria, aluminum saturation is very high with wet saturation the fertility criteria are low
Kajian Kesuburan Tanah di Lahan Pasca Penambangan Emas Tanpa Izin (PETI) pada Beberapa Periode Penambangan di Kecamatan Mandor Kabupaten Landak
Summary
Penelitian ini dilaksanakan Kecamatan Singingi, Kecamatan Kuantan Tengah, Kecamatan Sentoja Raya dan Kecamatan Logas Tanah Darat. Bahan yang digunakan dalam penelitian ini adalah tanah dari masing-masing lokasi lahan bekas tambang emas dari Kecamatan Singingi, Kecamatan Kuantan Tengah, Kecamatan Sentoja Raya dan Kecamatan Logas Tanah Darat serta bahan-bahan yang digunakan untuk analisis di laboratorium. Alat yang digunakan dalam penelitian ini adalah GPS, parang, ring tanah (terbuat dari pipa paralon), cangkul, kantong plastik, phiband, timbangan biasa, timbangan digital, Peta lokasi sebaran lahan berkas tambang emas tanpa izin di beberapa kecamatan kabupaten Kuantan Singingi (mulyani, 2018), alat tulis, kamera digital dan alat-alat yang digunakan untuk analisis di laboratorium. Satu plot pada areal yang berkontur miring, dua plot pengambilan contoh tanah lainnya diletakkan pada bagian permukaan tanah yang lebih tinggi dan bagian permukaan tanah yang lebih rendah dari plot pada bagian pusat blok bekas tambang emas dengan jarak minimal 5 m. Metode analisis dan alat ukur untuk analisis tanah bekas tambang emas
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