Riparian erosion hazard index (EHI) modeling: Deciphering the soil loss discrepancies in mountainous tropical rivers

Syazili, As'ad; Setyaaji, Primayoga Harsana; Bakri, Bakri; Leviana, Leviana; Fadli, Bori Heria; Mas'hum, Halim

doi:10.15243/jdmlm.2026.134.10969

Akses terbuka Jurnal SINTA 1

Riparian erosion hazard index (EHI) modeling: Deciphering the soil loss discrepancies in mountainous tropical rivers

Journal of Degraded and Mining Lands Management · Vol. 13 No. 4 (2026) · hlm. 10969–10981

DOI: 10.15243/jdmlm.2026.134.10969
ISSN: 2502-2458, 2339-076X
Terbit: 2026-10-01
Penerbit: Brawijaya University
Bahasa: eng
Lisensi: creativecommons.org/licenses/by-nc/4.0

Abstrak

Riparian zones in upstream watersheds are important for hydrological stability but increasingly endangered by climate change and human activities. This study quantified the potential erosion hazard along the Way Ilahan and Way Merabung rivers in Lampung by using the Universal Soil Loss Equation (USLE) with 52 sampling points. The parameters considered were rainfall erosion (R), soil erodibility (K), topography (LS), and land management (CP). The mean annual rainfall erosion is 962.12 mm/yr with a high geomorphological asymmetry. On the left edge, the extreme LS value (267.90) indicates soil loss well beyond the tolerable threshold (TSL = 179.20 t/ha/yr). The most significant degradation was observed on the left bank of the Way Merabung River, with an erosion rate of 49,818.95 t/ha/yr and an Erosion Hazard Index (EHI) of 278.01, more than 270 times the natural soil regeneration capacity. Conservation modeling indicated that the combination of forest cover and contour planting on a 20% slope reduced the predicted soil loss to 51.39-427.46 t/ha/yr, changing the hazard classification from “very high” to “low-moderate”. These results highlight land management (CP factor) as a major driver of increased erosion. Urgent interventions such as agroforestry and mechanical contour planting on the vulnerable left bank are essential to reduce severe downstream sedimentation.

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21 penulis · 77 tautan kepenulisan bersama · 21 lintas organisasi

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Sriwijaya University
National Institute of Forestry Science
Politeknik Pertanian Negeri Payakumbuh
Hasanuddin University
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Tampilkan sebagai tabel

Rekan penulis	Organisasi	Artikel bersama
Momon Sodik Imanudin	Sriwijaya University	3
Abdul Madjid	Hasanuddin University	1
Aisyah	Afiliasi tidak diketahui	1
Dedik Budianta	Sriwijaya University	1
Wiwik Hardaningsih	Politeknik Pertanian Negeri Payakumbuh	1
Siti Masreah Bernas	Sriwijaya University	1
Eunho Choi	National Institute of Forestry Science	1
Rujito Agus Suwignyo	Sriwijaya University	1
Adipati Napoleon	Sriwijaya University	1
Muh Bambang Prayitno	Sriwijaya University	1
Bakri Bakri	Sriwijaya University	1
A. Hermawan	Sriwijaya University	1
Z Khoiriyah	Sriwijaya University	1
Hyunyoung Yang	National Institute of Forestry Science	1
Raina Jelita	Sriwijaya University	1

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Sumber metadata: OAI-PMH (metadata jurnal) http://jdmlm.ub.ac.id/index.php/jdmlm/oai, pertama di-harvest 9 Nov 2026, terakhir terlihat 9 Nov 2026.

Metadata asli (oai_dc)

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	<dc:title xml:lang="en-US">Riparian erosion hazard index (EHI) modeling: Deciphering the soil loss discrepancies in mountainous tropical rivers</dc:title>
	<dc:creator>Syazili, As'ad</dc:creator>
	<dc:creator>Setyaaji, Primayoga Harsana</dc:creator>
	<dc:creator>Bakri, Bakri</dc:creator>
	<dc:creator>Leviana, Leviana</dc:creator>
	<dc:creator>Fadli, Bori Heria</dc:creator>
	<dc:creator>Mas'hum, Halim</dc:creator>
	<dc:subject xml:lang="en-US">conservation</dc:subject>
	<dc:subject xml:lang="en-US">erosion hazard index</dc:subject>
	<dc:subject xml:lang="en-US">riparian</dc:subject>
	<dc:subject xml:lang="en-US">soil erosion</dc:subject>
	<dc:subject xml:lang="en-US">USLE</dc:subject>
	<dc:description xml:lang="en-US">Riparian zones in upstream watersheds are important for hydrological stability but increasingly endangered by climate change and human activities. This study quantified the potential erosion hazard along the Way Ilahan and Way Merabung rivers in Lampung by using the Universal Soil Loss Equation (USLE) with 52 sampling points. The parameters considered were rainfall erosion (R), soil erodibility (K), topography (LS), and land management (CP). The mean annual rainfall erosion is 962.12 mm/yr with a high geomorphological asymmetry. On the left edge, the extreme LS value (267.90) indicates soil loss well beyond the tolerable threshold (TSL = 179.20 t/ha/yr). The most significant degradation was observed on the left bank of the Way Merabung River, with an erosion rate of 49,818.95 t/ha/yr and an Erosion Hazard Index (EHI) of 278.01, more than 270 times the natural soil regeneration capacity. Conservation modeling indicated that the combination of forest cover and contour planting on a 20% slope reduced the predicted soil loss to 51.39-427.46 t/ha/yr, changing the hazard classification from “very high” to “low-moderate”. These results highlight land management (CP factor) as a major driver of increased erosion. Urgent interventions such as agroforestry and mechanical contour planting on the vulnerable left bank are essential to reduce severe downstream sedimentation.</dc:description>
	<dc:publisher xml:lang="en-US">Brawijaya University</dc:publisher>
	<dc:date>2026-10-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
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	<dc:identifier>https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/17880</dc:identifier>
	<dc:identifier>10.15243/jdmlm.2026.134.10969</dc:identifier>
	<dc:source xml:lang="en-US">Journal of Degraded and Mining Lands Management; Vol. 13 No. 4 (2026); 10969–10981</dc:source>
	<dc:source>2502-2458</dc:source>
	<dc:source>2339-076X</dc:source>
	<dc:source>10.15243/jdmlm.2026.134</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/17880/2134</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2026 Journal of Degraded and Mining Lands Management</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-nc/4.0</dc:rights>
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