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Related Experiment Video

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Detecting the Water-soluble Chloride Distribution of Cement Paste in a High-precision Way

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Published on: November 21, 2017

Lifting China's water spell.

Dabo Guan¹, Klaus Hubacek, Martin Tillotson

¹Water Security Research Centre, School of International Development, University of East Anglia , Norwich, NR4 7TJ, U.K.

Environmental Science & Technology

|September 17, 2014

Summary

This summary is machine-generated.

China faces a water crisis driven by cumulative pollution, not just consumption. While efficiency gains offset some impacts, historical pollution requires vast freshwater resources for cleanup, highlighting a critical environmental challenge.

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Area of Science:

Environmental Science
Environmental Economics
Water Resource Management

Background:

China's water resources are unevenly distributed, with water-stressed North contrasting with the polluted South.
Emerging water crisis driven by consumption and pollution.

Purpose of the Study:

Investigate the driving forces behind China's water crisis from 1992 to 2007.
Analyze the impact of economic growth on water consumption and pollution.

Main Methods:

Structural decomposition analysis using the latest available datasets.
Employed four water indicators: freshwater consumption, COD discharge, cumulative COD, and dilution water requirements.

Main Results:

Water intensity improvements offset annual freshwater consumption and COD discharge linked to GDP growth.
Failed to eliminate cumulative pollution; 225 million tons of COD accumulated between 1992-2007.
Dilution requires 3.2-8.5 trillion m³ of freshwater.

Conclusions:

Cumulative water pollution is a key driver of pollution-induced water scarcity in China.
Urban household consumption, exports, and infrastructure investment contribute significantly to accumulated water pollution since 2000.