Spatial correlation and coupling between industrial enterprise agglomeration and water pollutant discharge.
Yazhu Wang1, Yawen Deng2, Xuejun Duan1
1Key Laboratory of Watershed Geographic Sciences, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China.
Chemosphere
|August 12, 2023
Summary
Industrial enterprises in Jiangsu, China, are concentrating and transferring pollution to new areas. This spatial agglomeration of polluting industries drives water pollution, confirming "Pollution Haven" and "Porter Hypothesis" theories.
Area of Science:
- Environmental Science
- Industrial Ecology
- Spatial Analysis
Background:
- Industrial wastewater discharge is a primary driver of water pollution in China.
- The spatial relationship between industrial structure and water pollution remains poorly understood.
Purpose of the Study:
- To analyze spatiotemporal changes in the agglomeration of pollution-intensive industries.
- To examine the evolution of water pollution patterns.
- To determine the correlation between industrial structure and water pollution.
Main Methods:
- Spatio-temporal analysis of industrial enterprise agglomeration.
- Analysis of water pollution patterns and their distribution.
- Correlation analysis between industrial concentration and pollution intensity.
Main Results:
- Polluting enterprises concentrated along the Yangtze River and Taihu Lake Basin, with a trend of transfer to northern Jiangsu.
- Industrial water pollution discharge patterns were observed facing rivers, seas, lakes, and cities.
- The papermaking industry significantly contributes to Chemical Oxygen Demand (COD) and Ammonia Nitrogen (NH3-N) pollution.
- A strong positive spatial coupling (94.95%) exists between polluting enterprise concentration and water pollution intensity.
Conclusions:
- Spatial agglomeration of polluting industries is a key factor in water environment pollution.
- The findings support the existence of the "Pollution Haven" and "Porter Hypothesis" theories.
- Industrial concentration and water pollution exhibit a mutually reinforcing relationship.
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