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Geographic complexity in Queensland irrigation water pricing: Spatial and temporal dynamics revealed by generalized additive models

delete2026-07-28
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OA
AI
J
Jaba Rani Sarker *
J
John Rolfe
D
Delwar Akbar
DOI：10.1016/j.agwat.2026.110659delete
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Abstract

Abstract

En 中文
• GAMs explain 40% of water price variation vs. 15% for linear models in Queensland. • Scheme prices vary 11-fold: $330/ML (Burdekin) to $3600/ML (St George). • Cotton-dominant schemes carry a 258% price premium over baseline schemes. • Real prices rose 115–164% above 2015 baseline following a 2019 structural break. • Horticulture schemes exhibit an 81% price premium reflecting crop water demand.
Keywords:
Water pricing
Spatial analysis
Panel data
Generalized additive models
Agricultural water markets
Regional analysis

Journal

Agricultural Water Management cover
Agricultural Water Management
IF:
6.5
Papers:
8.6K
Citations:
3.5W

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