Effect of Land Use Change on Soil Physico-chemical Characteristics in Sungai Batang, east part of caldera Maninjau

Yulnafatmawita Yulnafatmawita, Refdinal Refdinal, Armansyah Armansyah, Zainal Abdul Haris

Abstract


Perubahan penggunaan lahan dari hutan menjadi penggunaan lain akan mempengaruhi sifat fisiko-kimia tanah. Penelitian dilakukan untuk mengidentifikasi sifat-sifat kimia tanah yang dipengaruhi oleh perubahan penggunaan lahan di Sungai Batang timur-selatan kaldera Maninjau. Penelitian ini menggunakan metode survei, pengambilan sampel tanah dilakukan pada empat jenis penggunaan lahan yang berbeda (hutan, semak belukar, kebun campuran, dan tanah sawah) pada kedalaman 0-30 cm dengan tiga kali ulangan. Hasil penelitian menunjukkan bahwa tanah di Sungai Batang dalam masa perkembangan, hal ini ditunjukkan dengan tekstur tanah yang kasar (lempung liat sampai lempung berpasir), dengan partikel pasir 34-55%.Perubahan penggunaan lahan dari hutan menjadi penggunaan lain telah mengubah beberapa sifat fisiko-kimia tanah. Hal ini meningkatkan BD tanah, menurunkan TSP, laju permeabilitas, kandungan SOM, total-N, rasio C/N, dan ketersediaan P. Namun, ada peningkatan seperti KTK tanah, serta Ca- dan Na-tukar. Sedangkan pH tanah (H 2 O), K- dan Mg yang dapat ditukarkan sama. Secara umum alih fungsi lahan dari penggunaan lain sebagian besar lahan mengalami penurunan karakteristik fisiko-kimia tanah yang berasal dari material vulkanik di Sungai Batang. Itu terutama karena penurunan konten SOM.


Keywords


caldera Maninjau; land use change; physico-chemical characteristics; Sungai Batang; volcanic material

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DOI: http://dx.doi.org/10.5400/jts.2022.v27i2.%25p

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