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https://doi.org/10.17559/TV-20260524003624

Water Accounting Based on Input-Output Model: A Case Study of the Huai River Basin

Shengnan Zhang ; College of Agricultural Science and Engineering, Hohai University, Nanjing, China *

* Dopisni autor.

Sažetak

As a major grain- and manufacturing-producing region, the Huai River Basin faces declining water availability, worsening pollution, and mounting ecological pressure, making more efficient water use essential. This study integrates input-output (IO) analysis with multi-objective optimization to support industrial-structure adjustment in the basin. A non-competitive single-city IO table is compiled from city-scale transaction data, and a hierarchical water-accounting framework is built at three levels, city, sector, and intersectoral network to profile water consumption and grey-water (pollution) discharge through direct, indirect, and total water-use indicators and intensities. On this basis, economic-correlation, water-consumption, and pollution-emission coefficients are computed to classify industries, and structural-adjustment models constraining water quantity, water quality, and both jointly are formulated under the IO equilibrium principle. A system-dynamics model then simulates four scenarios, overall planning, water-saving development, further water conservation, and overall coordination over 2022-2030. Results show that surface water supplies over 70% of demand and agriculture accounts for most water use. The further-water-conservation scenario yields the largest demand reduction (13.72% by 2030), whereas the overall-coordination scenario attains the highest supply-demand ratio (1.008) and sustainability grade; both reach supply-demand balance by 2030, with overall coordination being optimal. Sector accounting shows direct water intensity falling across non-agricultural industries over 2012-2017, while agriculture, electrical-machinery, and communication-equipment manufacturing remain key regulation targets. The framework offers a transferable tool for water-oriented industrial-structure planning.

Ključne riječi

Huai River basin; industrial structure adjustment; input-output analysis; multi-objective planning model; water consumption accounting

Hrčak ID:

350412

URI

https://hrcak.srce.hr/350412

Datum izdavanja:

31.8.2026.

Posjeta: 0 *