Spatial Analysis of Water Conservation and Its Driving Factors in an Urban Citarum Tropical Watershed: Geospatial Approach

Irmadi Nahib, Yudi Wahyudin, Wiwin Ambarwulan (), Bono Pranoto, Fadhlullah Ramadhani, Destika Cahyana, Nunung Puji Nugroho, Nawa Suwedi, Jaka Suryanta, Vicca Karolinoerita, Mulyanto Darmawan, Aninda Wisaksanti Rudiastuti, Darmawan Listya Cahya, Bambang Winarno, Teguh Arif Pianto and Harun Idham Akbar
Additional contact information
Irmadi Nahib: Study Program of Natural Resources and Environmental Management Science (NREMS), Graduate School, IPB University, Bogor 16143, Indonesia
Yudi Wahyudin: Faculty of Agriculture, Universitas Djuanda, Jl. Tol Ciawi No. 1, Ciawi, Bogor 16720, Indonesia
Wiwin Ambarwulan: Research Center for Limnology and Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Bogor 16911, Indonesia
Bono Pranoto: Study Program of Natural Resources and Environmental Management Science (NREMS), Graduate School, IPB University, Bogor 16143, Indonesia
Fadhlullah Ramadhani: Research Center for Geoinformatics, National Research and Innovation Agency of Indonesia (BRIN), Kawasan Sains dan Teknologi Samaun Samadikun, Kota Bandung 40135, Indonesia
Destika Cahyana: Research Center for Food Crops, National Research and Innovation Agency, Cibinong, Bogor 16911, Indonesia
Nunung Puji Nugroho: Research Center for Ecology and Ethnobiology, National Research and Innovation Agency of Indonesia (BRIN), Cibinong, Bogor 16911, Indonesia
Nawa Suwedi: Research Center for Limnology and Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Bogor 16911, Indonesia
Jaka Suryanta: Research Center for Limnology and Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Bogor 16911, Indonesia
Vicca Karolinoerita: Research Center for Geoinformatics, National Research and Innovation Agency of Indonesia (BRIN), Kawasan Sains dan Teknologi Samaun Samadikun, Kota Bandung 40135, Indonesia
Mulyanto Darmawan: Research Center for Geoinformatics, National Research and Innovation Agency of Indonesia (BRIN), Kawasan Sains dan Teknologi Samaun Samadikun, Kota Bandung 40135, Indonesia
Aninda Wisaksanti Rudiastuti: Research Center for Conservation of Marine and Inland Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Cibinong, Bogor 16911, Indonesia
Darmawan Listya Cahya: Research Center for Limnology and Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Bogor 16911, Indonesia
Bambang Winarno: Research Center for Limnology and Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Bogor 16911, Indonesia
Teguh Arif Pianto: Research Center for Limnology and Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Bogor 16911, Indonesia
Harun Idham Akbar: Research Center for Limnology and Water Resources, National Research and Innovation Agency of Indonesia (BRIN), Bogor 16911, Indonesia

Resources, 2025, vol. 14, issue 5, 1-23

Abstract: Water conservation (WC) is a vital ecosystem service (ES) that plays an essential role in the sustainable management of water resources and ensures ecological security. This research examines the WC capacity of the Citarum watershed in West Java Province, Indonesia, from 2010 to 2020. The specific objectives of this research are as follows: (1) to assess the 10-year temporal and spatial variations of WC using the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) and topographic index model; (2) to analyze the temporal interchange between WC and its influencing factors through the Spatial Elastic Coefficient Trajectory Model (SECTM); and (3) to determine the driving factors (DFs) affecting WC by applying Multiscale Geographically Weighted Regression (MGWR). Key findings of this study reveal significant trends in WC from 2010 to 2020: the average WC in the Citarum watershed decreased from 513.96 mm/ha to 453.64 mm/ha (11.74%), indicating a concerning decline in ES capacity. This study also noted that regions implementing comprehensive regulations dominated the study area, covering approximately 72.70% of the total area (502,295 hectares). This illustrates that the implementation of rules plays a crucial role in the WC. Lastly, the MGWR analysis found that WC in the Citarum watershed positively correlated with topography, climate, and vegetation while negatively correlating with socioeconomic factors. This indicates that WC levels are generally lower in areas with higher human activity and economic growth, highlighting the impact of anthropogenic pressures on natural resources. This framework helps stakeholders plan to ensure sustainable development in the area, as it provides valuable insights into the interactions between the ecological and socioeconomic factors affecting WC.

Keywords: land-use change; MGWR model; socioeconomic; sustainability; topography (search for similar items in EconPapers)
JEL-codes: Q1 Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2025
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