Perubahan Karakteristik Tanah Dan Penilaian Kerusakan Lingkungan Akibat Penambangan Pasir Di Lahan Pertanian

Fauzan, Muhammad Nur and Dr. Sujarwo,, SP., MP. and Syahrul Kurniawan,, SP., MP., Ph.D. (2022) Perubahan Karakteristik Tanah Dan Penilaian Kerusakan Lingkungan Akibat Penambangan Pasir Di Lahan Pertanian. Magister thesis, Universitas Brawijaya.

Abstract

Pertambangan pasir memiliki peran penting dalam perekonomian. Namun, di sisi lain juga berpotensi memberikan dampak negatif bagi lingkungan. Lokasi penelitian dilakukan di DAS Mikro sumberbulu yang terletak di Desa Bambang, Kecamatan Wajak, Kabupaten Malang. Lahan pertanian di lokasi tersebut termasuk ke dalam kategori lahan kritis. Lahan kritis tersebut disebabkan oleh adanya penambangan pasir yang berlangsung secara illegal. Kegiatan tersebut memiliki pengaruh langsung terhadap lingkungan, yang dibuktikan dengan penurunan kualitas lahan. Parameter yang diamati adalah berat isi tanah, berat jenis tanah, porositas tanah dan C-organik tanah. Penelitian ini bertujuan untuk menilai kerusakan lingkungan akibat kegiatan penambangan pasir dan menganalisis pengaruh kegiatan penambangan pasir terhadap perubahan karakteristik tanah (sifat fisika dan kimia tanah). Metode analisis yang digunakan yaitu Resourve Equivalency Analysis (REA), analisis regresi linier sederhana dan Uji ANOVA. Total luas lahan pertanian yang rusak akibat adanya kegiatan penambangan pasir seluas 16.8 Ha. Hasil analisis statistik menunjukkan bahwa kegiatan penambangan pasir berdampak pada perubahan karakteristik tanah seperti: bobot isi / bulk density, porositas tanah dan C-organik tanah. Tanah yang tidak dilakukan penambangan (lokasi 1) memiliki kesuburan tanah yang relatif lebih baik dibandingkan dengan lokasi lainnya. Hasil REA menunjukkan bahwa total besaran luas lahan yang harus direklamasi sebesar 21.487 ha. Lahan tersebut akan direklamasi dengan dilakukan revegetasi menggunakan tanaman jagung untuk mengembalikan fungsi jasa lingkungan yang hilang, adapun biaya yang harus dikeluarkan untuk mereklamasi sebesar Rp 36,767,500/ha. Oleh karena itu, reklamasi lahan pasca kegiatan penambangan harus lebih digalakkan oleh pemerintah bagi pelaku usaha tambang di Indonesia agar lahan tersebut dapat digunakan kembali seperti sediakala.

English Abstract

Sand mining has an important role in the economy. On the other hand, it also has the potential to have a negative impact on the environment. The research location was conducted in the Sumberbulu Micro Watershed which is located in Bambang Village, Wajak Sub-District, Malang Regency. Agricultural land in this location is included in the category of critical land. The critical land is due to illegal sand mining. These activities have a direct influence on the environment, as evidenced by a deterioration in land quality. Parameters observed were soil bulk density, soil bulk density, soil porosity and soil organic C. This study aims to assess the environmental damage caused by sand mining activities and to analyze the effect of sand mining activities on changes in soil characteristics (physical and chemical properties of the soil). The analytical method used is Resource Equivalency Analysis (REA), simple linear regression analysis and ANOVA test. The total area of agricultural land damaged by sand mining activities is 16.8 hectares. The results of statistical analysis showed that sand mining activities have an impact on changes in soil characteristics such as bulk density, soil porosity, and soil organic C. Soil that is not mined (location 1) has relatively better soil fertility compared to other locations. The REA results show that the total area of land that must be reclaimed is 21.487 ha. The land will be reclaimed by revegetation using corn plants to restore the lost function of environmental services, while the cost of reclamation is 36,767,500 IDR/ha. Therefore, post-mining land reclamation should be encouraged by the government for mining business actors in Indonesia so that the land can be reused as before

Other obstract

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Item Type: Thesis (Magister)
Identification Number: 0422040005
Uncontrolled Keywords: penambangan pasir, degradasi lahan, karakteristik tanah, reklamasi lahan pasca tambang dan resource equivalency analysis (REA),sand mining, land degradation, soil characteristics, post-mining land reclamation and resource equivalency analysis (REA)
Subjects: 300 Social sciences > 338 Production > 338.1 Agriculture
Divisions: S2/S3 > Magister Ekonomi Pertanian, Fakultas Pertanian
Depositing User: Nur Cholis
Date Deposited: 27 Jul 2022 02:13
Last Modified: 27 Jul 2022 02:13
URI: http://repository.ub.ac.id/id/eprint/192758
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