Nature-Based Solutions for Sustainable Planning: Is the 5% Green Space Guideline for Peri-Urban Residential Development in Thailand Sufficient?
持続可能な計画のための自然基盤ソリューション：タイの都市周辺住宅開発における5%緑地ガイドラインは十分か？ (AI 翻訳)
Sunantana Nuanla-or, Kim N. Irvine, Manat Srivanit, Thongchai Roachanakanan
🤖 gxceed AI 要約
日本語
タイの都市周辺部における5%緑地規制が洪水リスク管理に十分か、GISとPCSWMMモデルで評価。164のゲートコミュニティを分析し、5%基準では5年確率降雨で局所的な洪水が発生することを示した。ハイブリッドなグリーン・グレーインフラが最適で、性能ベースの貯留目標への政策転換を提言。
English
This study evaluates whether Thailand's 5% green space guideline for peri-urban residential development is sufficient for flood risk management. Using GIS and PCSWMM modeling of 164 gated communities, it finds that the 5% baseline is inadequate, with localized flooding expected under a 5-year storm. A hybrid grey-green infrastructure approach is optimal, and policies should shift to performance-based volumetric retention targets.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では都市緑地や雨水貯留の性能基準が議論されており、本研究成果は日本の都市計画や気候適応策に示唆を与える。特に、面積ベースの規制から性能ベースへの転換は、日本の流域治水やグリーンインフラ政策と関連する。
In the global GX context
This paper contributes to global discourse on climate-resilient urban planning by questioning static green space ratios. It provides empirical evidence from Thailand that performance-based stormwater retention targets are more effective, relevant for cities worldwide facing similar peri-urban flood risks.
👥 読者別の含意
🔬研究者:都市洪水モデリングとNbSの有効性評価の方法論を参考にできる。
🏢実務担当者:不動産開発や都市計画担当者は、緑地規制の限界と性能基準の重要性を理解できる。
🏛政策担当者:都市計画規制の見直しに際し、性能ベースの貯留目標への移行を検討する根拠となる。
📄 Abstract（原文）
Rapid peri-urban sprawl is intensifying flood risk by replacing natural landscapes with dense, impervious residential developments. Thailand’s land use regulations require a 5% minimum green space allocation for new housing developments as a measure to promote livability and well-being. Green space also has the potential to sustainably manage stormwater runoff, but for Thailand’s peri-urban development, the question remains whether 5% green space is sufficient to reduce flood risk. As such, this study critically evaluates whether this 5% green space guideline is sufficient for peri-urban runoff and flood management in peri-urban Pathum Thani, particularly given the acceleration of Bangkok’s urban sprawl over the past 30 years. Using a multi-scalar framework, we integrated GIS spatial analysis of 164 gated communities (1995–2025) with site-specific PCSWMM hydrologic modeling to test baseline conditions and Nature-based Solution (NbS) interventions against 5-, 10-, 50-, and 100-year design storms. Findings reveal developers generally adhere to the 5% guideline, thereby addressing policy while maximizing salable land space. PCSWMM simulations show the 5% baseline alone does not adequately manage runoff, with localized residential flooding expected for a 5-year design storm under current baseline conditions. Scenario testing indicates a hybrid grey–green infrastructure approach would optimally manage flooding. Given economic barriers to expanding open space, converting roads to permeable pavements offers a possible optimization strategy. Ultimately, static area-based regulations remain insufficient; policies must transition to performance-based volumetric retention targets to mitigate downstream flooding and foster resilient communities.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/land15081442first seen 2026-08-12 04:53:15
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