DOI: https://doi.org/10.14710/ijpd.10.2.85-95

Assessing the Mainstreaming of Land Subsidence Risk in Spatial and Development Planning: Evidence from Coastal Semarang, Indonesia

*Ferdianta Wahyu N Pratama  -  Department of Public Works and Spatial Planning, Trenggalek Regency, Jl. Supriadi No.2a, Trenggalek 66316, Indonesia, Indonesia
Januarta Dwi Kusmayanti  -  The National Research and Innovation Agency, Gedung BJ Habibie, Jl. M.H. Thamrin No.8, Jakarta 10340, Indonesia, Indonesia
Dapot Andri A. Marpaung  -  Nusantara Capital City Authority, Menara Mandiri II Lantai 5, Jalan Jenderal Sudirman Kav 54-55, Jakarta 12190, Indonesia, Indonesia
Received: 21 Jul 2025; Accepted: 30 Jan 2026; Published: 30 Jan 2026.
Editor(s): Jawoto Setyono
Open Access Copyright (c) 2026 The Indonesian Journal of Planning and Development
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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Abstract

Spatial planning in coastal areas involves balancing economic development with the management of long-term environmental risks. Semarang City’s coastal zone faces severe land subsidence, with rate reaching approximately 10–13 cm per year, exacerbating the impacts of sea-level rise and climate change. This study examines the extent to which land subsidence issue has been incorporated into spatial and development planning policies in Semarang City. Using a qualitative approach based on content analysis of spatial and development planning documents across multiple governance levels, the findings reveal that despite long-standing scientific evidence, land subsidence is not formally designated as a disaster-prone area within spatial planning documents. Effective spatial planning is expected to respond to the disaster risks through adaptive and mitigative policies and programs that reflect environmental carrying capacity and regional support capacity. However, the limited mainstreaming of land subsidence risk has resulted in spatial planning and development practices that insufficiently integrate these environmental considerations. The study highlights a critical gap between scientific knowledge and planning implementation and underscores the need for stronger institutional integration of land subsidence risk to support sustainable coastal urban development.

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Keywords: Coastal Area; Land Subsidence; Mainstreaming; Policy Evaluation; Spatial Planning

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