Multispatial scale effects of landscape patterns on seasonal water quality in Jiangnan water town under the green and integrated ecological development of the Yangtze River Delta

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2025-06-13 DOI:10.1016/j.ejrh.2025.102519

Ming Zhang , Hao-Rui Li , Yaoyao Fang , Xiaomian Zhang , Xiaojie Yan , Chunlei Yue , Liang-Jie Wang

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引用次数: 0

Abstract

Study region

Jiashan County, Zhejiang Province, a typical Jiangnan water town.

Study focus

This study examined five water quality indices, namely pH, total nitrogen, total phosphorus, ammonia nitrogen, and the permanganate index, assessed landscape patterns at different riparian buffer scales, quantified the impacts of landscape patterns on water quality at different seasonal and spatial scales, and predicted the response of water quality under different landscape scenarios.

New hydrological insights for the region

The results revealed that landscape patterns generally explained more water quality changes in the dry season than in the wet season, although this difference was relatively limited. The 800 m scale had the most significant explanatory power, ranging from 1.38 % to 35.94 % higher than that of the other scales. The total nitrogen concentration did not meet the standard under any of the different scenarios. In the future, the focus should be on monitoring total nitrogen, and the landscape is recommended to reduce fragmentation of cropland and forest land. This study provides information to support the management of riparian zone landscapes and water ecosystems, and promotes the construction of a green ecological integration demonstration area in the Yangtze River Delta.

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长三角绿色综合生态发展下江南水乡景观格局对季节水质的多空间尺度效应

研究区域为浙江省嘉善县一个典型的江南水乡。研究重点研究了pH、总氮、总磷、氨氮、高锰酸盐5个水质指标，评价了不同河岸缓冲带尺度的景观格局，量化了不同季节和空间尺度景观格局对水质的影响，预测了不同景观情景下的水质响应。研究结果表明，景观格局总体上解释了旱季比雨季更多的水质变化，尽管这种差异相对有限。800 m尺度的解释力最显著，比其他尺度高1.38% ~ 35.94%。在不同情况下，总氮浓度均未达到标准。未来的重点应放在监测总氮上，并建议通过景观来减少耕地和林地的破碎化。该研究可为河岸带景观和水生态系统的管理提供信息支持，促进长三角绿色生态一体化示范区的建设。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.