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All Journal GOVERNANCE: Jurnal Ilmiah Kajian Politik Lokal dan Pembangunan West Science Interdisciplinary Studies West Science Interdisciplinary Studies
Kasim, Roland
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Humanities Economics, Econometrics & Finance Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences

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Riparian Buffers, Connectivity, and Water Quality: A Systematic Review of Land‑Use Gradients in Agro‑Urban Watersheds Kasim, Roland; Lihawa, Fitryane; K. Baderan, Dewi Wahyuni
West Science Interdisciplinary Studies Vol. 3 No. 12 (2025): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v3i12.2514

Abstract

Agro‑urban watersheds combine intensive agriculture, expanding settlements, and modified drainage networks that jointly accelerate nutrient, sediment, and thermal pressures on streams. Riparian buffers are widely promoted as nature‑based infrastructure to intercept these pressures, yet reported effectiveness varies because pollutant delivery is mediated by hydrologic and ecological connectivity. This systematic review synthesizes international evidence on how riparian buffer attributes (width, vegetation structure, and integrity) interact with land‑use gradients and connectivity metrics to influence water‑quality indicators (chemical, physical, thermal, and biological). The synthesis shows consistent degradation of water quality with increasing land‑use intensity, but with strong context dependence driven by scale, storm routing, and pathway bypass. Buffers most reliably reduce pollutants when dominant surface and shallow subsurface flowpaths intersect buffer soils; uniform width prescriptions are therefore insufficient without connectivity diagnostics and input‑load context. We further find growing use of graph‑based and hydrologic connectivity measures to prioritize riparian corridors and identify hotspots where restoration can yield the highest water‑quality returns. The review concludes with connectivity‑informed design and planning implications to support water‑quality protection in agro‑urban watersheds.
Riparian Buffers, Connectivity, and Water Quality: A Systematic Review of Land‑Use Gradients in Agro‑Urban Watersheds Kasim, Roland; Lihawa, Fitryane; K. Baderan, Dewi Wahyuni
West Science Interdisciplinary Studies Vol. 3 No. 12 (2025): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v3i12.2514

Abstract

Agro‑urban watersheds combine intensive agriculture, expanding settlements, and modified drainage networks that jointly accelerate nutrient, sediment, and thermal pressures on streams. Riparian buffers are widely promoted as nature‑based infrastructure to intercept these pressures, yet reported effectiveness varies because pollutant delivery is mediated by hydrologic and ecological connectivity. This systematic review synthesizes international evidence on how riparian buffer attributes (width, vegetation structure, and integrity) interact with land‑use gradients and connectivity metrics to influence water‑quality indicators (chemical, physical, thermal, and biological). The synthesis shows consistent degradation of water quality with increasing land‑use intensity, but with strong context dependence driven by scale, storm routing, and pathway bypass. Buffers most reliably reduce pollutants when dominant surface and shallow subsurface flowpaths intersect buffer soils; uniform width prescriptions are therefore insufficient without connectivity diagnostics and input‑load context. We further find growing use of graph‑based and hydrologic connectivity measures to prioritize riparian corridors and identify hotspots where restoration can yield the highest water‑quality returns. The review concludes with connectivity‑informed design and planning implications to support water‑quality protection in agro‑urban watersheds.
DINAMIKA PERUBAHAN TATA RUANG PERTANIAN DAN NON-PERTANIAN DI PROVINSI GORONTALO (2017-2023): ANALISIS DERET WAKTU DAN IMPLIKASINYA TERHADAP KETAHANAN PANGAN Kasim, Roland; Dunggio, Iswan; Rahim, Sukirman
GOVERNANCE: Jurnal Ilmiah Kajian Politik Lokal dan Pembangunan Vol. 12 No. 2 (2025): 2025 Desember
Publisher : Lembaga Kajian Ilmu Sosial dan Politik (LKISPOL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56015/gjikplp.v12i2.640

Abstract

Penelitian ini menganalisis dinamika perubahan tata ruang antara lahan pertanian (sawah) dan lahan bukan pertanian di Provinsi Gorontalo periode 2017–2023 serta implikasinya terhadap ketahanan pangan daerah. Data yang digunakan berupa deret waktu sekunder luas lahan sawah dan luas lahan bukan pertanian yang dihimpun dari statistik resmi Provinsi Gorontalo. Data dianalisis secara deskriptif dan deret waktu sederhana melalui perhitungan perubahan persentase, rata-rata perubahan tahunan, tren linier, serta korelasi Pearson. Hasil penelitian menunjukkan bahwa luas lahan sawah menyusut dari 34.764 ha pada 2017 menjadi 30.112 ha pada 2023, atau turun 13,38% (sekitar 4.652 ha) dengan rata-rata kehilangan 775 ha per tahun. Sebaliknya, lahan bukan pertanian meningkat dari 283.890 ha menjadi 307.873 ha (naik 8,45% atau 23.983 ha) dengan penambahan rata-rata 3.997 ha per tahun. Rasio luas lahan bukan pertanian terhadap sawah yang sekitar delapan kali pada 2017 meningkat menjadi lebih dari sepuluh kali pada 2023. Korelasi Pearson antara kedua seri sebesar –0,31 menunjukkan hubungan negatif sedang, yang mengindikasikan bahwa ekspansi lahan non-pertanian sebagian terjadi melalui konversi lahan sawah. Dengan asumsi produktivitas padi sawah 4,4–5,6 ton/ha, hilangnya 4.652 ha sawah berpotensi menurunkan produksi padi tahunan sekitar 20–26 ribu ton, setara ±8–10% produksi padi Gorontalo tahun 2023. Tren ini dapat melemahkan dimensi ketersediaan (availability) pangan, kecuali diimbangi oleh peningkatan produktivitas, perbaikan infrastruktur irigasi, serta perlindungan ketat terhadap Kawasan/Lahan Pertanian Pangan Berkelanjutan (KP2B/LP2B). Penelitian merekomendasikan penguatan penataan ruang, penegakan zona lindung lahan pangan, dan integrasi indikator ketahanan pangan dalam kebijakan pembangunan daerah.
Co-Authors Dewi Wahyuni K. Baderan Fitryane Lihawa Iswan Dunggio Sukirman Rahim