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eISSN: 2083-5906
ISSN: 1230-1485
ISSN: 1230-1485
ORIGINAL RESEARCH
The Relationship between Water Quality
in the Niyang River During the Flood Season
and Land Use at Different Spatial Scales
1
Xizang Agriculture and Animal Husbandry university, Linzhi 860000, China
2
State Key Laboratory of Water Cycle and Water Security in River Basin, China Institute of Water Resources
and Hydropower Research, Beijing 100038, China
3
Shandong Water Conservancy Management and Service Center of Haihe Huaihe Xiaoqing River Basin,
Jinan 250014, China
Submission date: 2025-02-03
Final revision date: 2025-04-19
Acceptance date: 2025-06-02
Online publication date: 2025-09-29
Corresponding author
Fu Yi-cheng
China Institute of Water Resources and Hydropower Research, A-1 Fuxing Road Haidian District, Beijing, 100038, Beijing, China
China Institute of Water Resources and Hydropower Research, A-1 Fuxing Road Haidian District, Beijing, 100038, Beijing, China
KEYWORDS
TOPICS
ABSTRACT
To examine the relationship between water quality in the Niyang River and its response to land use
at varying spatial scales, we analyzed water quality data from seven monitoring stations along the main
stem of the Niyang River. This study evaluated the current status of water quality and its correlation
with land use structures within buffer zones at different scales, identifying the optimal buffer scale
for assessing the impact of land use on water quality. The results indicate that the water quality of
the Niyang River falls under Class III standards, with chemical oxygen demand (COD) being a key
indicator of potential pollution risk. There is a significant correlation between specific water quality
parameters and land use patterns across different buffer scales. Notably, the 3-kilometer buffer zone
exhibits the highest explanatory power for spatial variability in water quality, making it the optimal
scale for managing water quality in the Niyang River. Forest land within this buffer zone significantly
influences COD and total nitrogen (TN) concentrations. This study underscores the importance
of optimizing land use structure within the 3-kilometer buffer zone, particularly through strategic
allocation of forested areas, to enhance pollutant retention and improve the overall water ecological
environment of the Niyang River.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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| ISSN: | 1230-1485 |
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