Sectorial water use trends in the urbanizing Pearl River Delta, China

Assessing and managing water use is crucial for supporting sustainable river basin management and regional development. The first consistent and comprehensive assessment of sectorial water use in the Pearl River Delta (PRD) is presented by analysing homogenized annual water use data from 2000 to 201...

Full description

Saved in:
Bibliographic Details
Published in:PloS one 2015-02, Vol.10 (2), p.e0115039-e0115039
Main Authors: Yao, Mingtian, Werners, Saskia E, Hutjes, Ronald W A, Kabat, Pavel, Huang, Heqing
Format: Article
Language:English
Subjects:
Agricultural economics
Agricultural management
Agriculture
Analysis
availability
China
Cities
climate-change
demand model
Developing countries
Domestic water
drainage
Economic development
Economic growth
Economic indicators
Environmental Monitoring
Geography
Glucocorticoids
growth
Hydrologic cycle
Hydrology
impacts
Industrial water
Industry
LDCs
Mathematical models
Precipitation
Regional development
Regional planning
River basin management
River basins
Rivers
south china
streams
Sustainable development
system
Trends
Urbanization
Water
Water management
Water quality
Water resources
Water rights
Water shortages
Water supply
Water use
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Assessing and managing water use is crucial for supporting sustainable river basin management and regional development. The first consistent and comprehensive assessment of sectorial water use in the Pearl River Delta (PRD) is presented by analysing homogenized annual water use data from 2000 to 2010 in relation to socio economic statistics for the same period. An abstraction of water use, using the concept of water use intensity, and based on equations inspired by those used in global water resource models, is developed to explore the driving forces underlying water use changes in domestic, industrial and agricultural sectors. We do this at both the level of the region as a whole, as well as for the nine cities that constitute the PRD separately. We find that, despite strong population and economic growth, the PRD managed to stabilize its absolute water use by significant improvements in industrial water use intensities, and early stabilisation of domestic water use intensities. Results reveal large internal differentiation of sectorial water use among the cities in this region, with industrial water use intensity varying from -80 to +95% and domestic water use intensity by +/- 30% compared to the PRD average. In general, per capita water use is highest in the cities that industrialised first. Yet, all cities except Guangzhou are expected to approach a saturation value of per capita water use much below what is suggested in recent global studies. Therefore, existing global assessments probably have overestimated future domestic water use in developing countries. Although scarce and uncertain input data and model limitations lead to a high level of uncertainty, the presented conceptualization of water use is useful in exploring the underlying driving forces of water use trends.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0115039