Ambang Batas Erosi Pada Suatu Daerah Aliran Sungai (Studi Kasus di DAS Tulis, Banjarnegara, Jawa Tengah)

Beny Harjadi, Inkorena G. S. Sukartono, Etty Hesthiati

Abstract


Watersheds (DAS), which are river basins flowing in one outlet and limited by hills and mountains, often occur in land degradation or erosion. Erosion that occurs is said to be safe if it does not exceed the tolerable erosion or erosion tolerance limits or often called T-values. With regard to problems on sloping land in a watershed, the purpose of this study is to calculate the value of T-values or erosion tolerance limits. Calculation of T-values using the Hammer method (1981), namely by observing the factors of soil depth and effective depth of roots, and resources life of 300 or 400 years. T-value results are classified into 4 classes, namely (tons/ha/year) : (1) very low (<5), (2) low (5-25), (3) high (25-50), and (4) very high (> 50). The research location in the Tulis watershed is 12,750 ha in DTW (Reservoir Catchment Area) Mrica Banjarnegara. From the calculation of the T-value obtained results: very low 0.03% (3.8 ha), low 2.46% (313.7 ha), high 49.31% (6,287 ha), and very high 48.2% (6,145.5 ha).


Keywords


Tolerable erosion; Tulis Watershed; Mrica Reservoir; Erosion; Banjarnegara

Full Text:

PDF

References


Ambarwulan, W. et al. (2014) ‘Land use planning of paddy field using geographic information system and land evaluation in West Lombok , Indonesia’, 4(1).

Cahyono, B. et al. (2015) ‘Penentuan Kecepatan Sedimentasi Waduk Berdasarkan Data Pengukuran Batimetri dan Analisa Kandungan Sedimen Dalam Air’, in, pp. 13–21.

Choudhary, B. K., Majumdar, K. and Datta, B. K. (2016) ‘Effects of Land Use on the Soil Organic Carbon Storage Potentiality and Edaphic Factors in Tripura , Northeast India’, American Journal of Climate Change, 2016, 5, 417-429 Published, (September), pp. 417–429.

Harjadi, B (2009). Monitoring dan Evaluasi Daerah Aliran Sungai dengan Penginderaan Jauh dan Sistem Informasi Geografis. Forum Geografi, Vol. 23, No. 2, Desember 2009: 139 - 152.

Harjadi, B. (2018) ‘Analisis Perhitungan Toleransi Erosi Di Daerah Tangkapan Waduk Kedung Ombo, Boyolali’, Jurnal Hutan Tropis, 5(2), pp. 143–150. doi: 10.20527/jht.v5i2.4368.

Hermon, D. (2018) ‘Prediksi Erosi Yang Diperbolehkan (edp) dan Degradasi Fisik Tanah Daerah Gunung Padang Sumatera Barat’, J. Hidrolitan, 1(September), pp. 18–25.

Pasaribu, P. H. P., Rauf, A. and Slamet, B. (2018) ‘Kajian Tingkat Bahaya Erosi Pada Berbagai Tipe Penggunaan Lahan di Kecamatan Merdeka Kabupaten Karo’, III(1), pp. 279–284.

Riqqi, A., Taradini, J. and Effendi, A. E. (2018) ‘Pemodelan Kualitas Informasi Geospasial Dasar Di Indonesia’, Geomatika, 24(1), pp. 13–20. doi: 10.24895/jig.2018.24-1.773.

Sugandi, D. (2013) ‘The Effect of Socio-economy Towards Consrevation at Citanduy Watershed’, The Indonesian Geographers Association, 45(1), pp. 90–99.

Sunandar, R., Ikhsan, J. and Cahyati, M. D. (2013) Analisis Erosi dan Sedimentasi Bendungan Mrica Banjarnegara (Studi Kasus : Waduk Mrica Banjarnegara).

Sutrisno, N. and Heryani, N. (2013) ‘Teknologi Konservasi Tanah Dan Air Untuk Mencegah Degradasi Lahan Pertanian Berlereng’, Jurnal Litbang Pertanian, 32(2), pp. 122–130.

Timpanometri, D. M. (2012) ‘Erodibilitas Tanah’. Bogor: unpublish, pp. 1–11.




DOI: http://dx.doi.org/10.20527/es.v16i3.9677

Article Metrics

Abstract view : 87 times
PDF - 48 times

Refbacks

  • There are currently no refbacks.


Creative Commons License
EnviroScienteae is licensed under a Creative Commons Attribution 4.0 International License

ISSN : 2302-3708 (Online version)  ISSN : 1978-8096 (Print version)

Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan
Program Pascasarjana Universitas Lambung Mangkurat
Kampus ULM Banjarbaru Gedung 1 Lantai II
Jalan Ahmad Yani Km 36 Banjarbaru Kode Pos 70714
Tel / fax : (0511) 4777055 / (0511) 4777055
email : psdal.unlam@gmail.com