PENGUKURANTINGKATBAHAYABENCANAEROSIDIKECAMATANKOKAP

Authors

  • Suhadi Purwantara
  • Muhammad Nursa'ban

DOI:

https://doi.org/10.21831/gm.v10i1.3603

Abstract

TujuanpenelitianiniyaitumengetahuitingkatbesarerositanahdanpersebarannyadiKecamatanKokapKabupatenKulonprogo
PenelitianinimerupakanpenelitiandeskriptifeksploratifmenggunakanbantuanSistemInformasiGeografis.PopulasipenelitianyaitusemualahandiKecamatanKokapKabupatenKulonprogo.Sampelpenelitiandiperoleh16satuanunitlahanmelaluiteknikpurposiveareasamplingdengancaratumpangsusunpeta;kondisigeologi,jenistanah,kemiringanlerengdantatagunalahan.Metodepengumpulandatamelaluisurveiuntukmemperolehfaktor-faktorpembentukerosimenggunakanmetodeUniversalSoilLossEquation(USLE),perhitunganerositotal,erosidiperbolehkandanbesarantingkatbahayaerosipadasetiapsatuanunitlahan.Teknikanalisisdatadilakukanmelaluianalisislaboratoriumdanoengukuranlapangan,kemudiandideskripsikansesuaikriteriayangdibuat.
HasilpenelitiandiperolehdatabesaranerositanahpermukaandiKecamatanKokapyaiturata-rata3610,13ton/tahunataurata-rata10,50ton/ha/tahun.Rata-ratabesarerositotalyaitu4512,66ton/tahunataurata-rata13,12ton/ha/tahun.Besarerosiyangdiperbolehkanadalahrata-rata2330ton/tahunatau5,22ton/ha/tahun.Hasilerosipermukaanmaupunerositotallebihbesardaripadaerosidiperbolehkansehingga.diprediksikanbahwaerosi-erosipotensialyangterjadidikecamatanKokapakansangatmemberikandampakterhadapkualitastanah.Sebarandaerahpotensialerositanahkategori"ringan"(R)meliputiluas265,23ha(3,59%)padasatuanunitlahanAlIB.Tingkatbahayaerosikategori"sedang"mencakupluas4081,49ha(55,31%)padasatuanunitlahanLtIIIA,ALIA,GRIA,GR1B,GRIIB.Tingkaterosikategori"berat"mencakup32,38%dariluaskeseluruhanlokasipenelitian.Kategori"berat"terdapatpadasatuanunitlahanLtIA,LtIB,LtIIA,LtIIB,LtIIIB,AlIIBdanGRIIA.Tingkaterosikategori"sangatberat"mencakupluas643,84ha(8,72%)padasatuanunitlahanALIIAdanGrIIIA,sertaGRIIIB.
K
ataKunci:erosi,mitigasi,tanah,bencana

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How to Cite

Purwantara, S., & Nursa’ban, M. (2015). PENGUKURANTINGKATBAHAYABENCANAEROSIDIKECAMATANKOKAP. Geo Media: Majalah Ilmiah Dan Informasi Kegeografian, 10(1). https://doi.org/10.21831/gm.v10i1.3603

Issue

Vol. 10 No. 1 (2012): Geo Media: Majalah Ilmiah dan Informasi Kegeografian

Section

Articles

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