Abstract
Ecosystem services provided by river ecosystems rely on healthy ecosystem structure and ecological processes. The Bei**g-Tian**-Hebei urban is a typical water-deficient area. As an important part of the urban–rural integration construction, evaluating the health status of the Beiyun River Basin and discovering the weak links in the water environment are the basis for improving the health of the basin. In this study, analytic hierarchy process (AHP) was used to establish an evaluation index system for the Beiyun River Basin from 5 aspects including water quality, biology, ecology, hydrology, and social functions, and the principal component analysis (PCA) was then used to assign weights to the index layer. The evaluation results showed that the health evaluation results of the Beiyun River Basin in 2019 are “sub-healthy,” and the overall health status is getting worse from northwest to southeast. In the middle reaches of the region, the evaluation result is “healthy,” followed by the upstream, and the downstream is the worst. The results showed that areas with less human interference or orderly intervention are in better health. High eutrophication level, low bio-diversity, and low vegetation coverage are the main indicators that leads to poor ecosystem health in the Beiyun River Basin. For the comprehensive management of the Beiyun River, the improvement of water quality and habitat ecological restoration are key actions to the health of the upstream ecosystem. The improvement of the health status of the downstream should focus on equal emphasis on water quality and quantity, restoration of biodiversity, and improvement of the quality of the riparian ecological environment.
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The datasets generated and analyzed during the current study are not publicly available due research item purpose confidentiality but are available from the corresponding author on reasonable request.
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Acknowledgements
This research was supported by the Water Pollution Control and Treatment of the National Science and Technology Major Project (2018ZX07111003).
Funding
This research was supported by the Water Pollution Control and Treatment of the National Science and Technology Major Project (2018ZX07111003).
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Qh Y: conceptualization, methodology, software, investigation, resources, data curation, writing-original draft preparation
Hh W: data curation, writing-original draft preparation, resources, formal analysis, conceptualization
Yq Z: investigation, resources, data curation
Yh Z: investigation, resources, data curation
Y Z: visualization, investigation, project administration
Rh Y: visualization, investigation, project administration, funding acquisition
Wj Y: validation, supervision, conceptualization
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Yuan, Q., Wu, H., Zhao, Y. et al. Ecosystem health of the Beiyun River basin (Bei**g, China) as evaluated by the method of combination of AHP and PCA. Environ Sci Pollut Res 29, 39116–39130 (2022). https://doi.org/10.1007/s11356-021-17616-x
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DOI: https://doi.org/10.1007/s11356-021-17616-x