PENGARUH FAKTOR PANJANG KELERENGAN TERHADAP PENENTUAN AWAL EROSI LAHAN
DOI:
https://doi.org/10.30595/sainteks.v11i2.141Abstract
Salah satu faktor penentu dalam analisis erosi lahan adalah faktor panjang kelerengan lahan daerah aliran sungai. Perubahan panjang kelerengan, akan memberikan dampak terhadap besaran erosi lahan tersebut. Penelitian ini dimaksudkan untuk mengkaji pengaruh panjang kelerengan lahan terhadap penentuan awal erosi lahan yang terjadi di Daerah Aliran Sungai Merawu. Kajian diawali dengan penyusunan peta jenis-jenis tanah sesuai dengan kondisi setempat dan tanaguna lahannya untuk menentukan panjang kelerengan lahan. Kajian selanjutnya adalah menentukan besaran erosi lahan dengan formula USLE. Analisis dilakukan menggunakan data peta satuan lahan dan tataguna lahan untuk menentukan faktor C dan K, sedangkan data hujan menggunakan data tahun 1988 sampai dengan 2008. Hasil analisis menunjukkan bahwa variasi kelerengan lahan memberikan pengaruh terhadap penentuan awal erosi lahan pada lokasi penelitian. Berubahnya satuan lahan dan kelerengan lahan akan memberikan perubahan tehadap besaran erosi lahan Kata kunci: DAS Merawu, Karakteristik tanah, erosi lahanReferences
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