纸质出版:2024
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陈晓艺, 皮玉宇, 张睿麒, et al. Influence of Landscape Factors on Water Quality of Ganjiang River[J]. 2024, 47(S1): 207-213.
陈晓艺, 皮玉宇, 张睿麒, 等. 景观因子对赣江水体水质的影响分析[J]. 环境科学与技术, 2024,47(S1):207-213. DOI: 10.19672/j.cnki.1003-6504.0426.23.338.
陈晓艺, 皮玉宇, 张睿麒, et al. Influence of Landscape Factors on Water Quality of Ganjiang River[J]. 2024, 47(S1): 207-213. DOI: 10.19672/j.cnki.1003-6504.0426.23.338.
流域面源污染对水体水质的影响很难被识别。研究景观因子(土地利用类型和地形因子)对河流水质的影响有助于明晰面源污染对水质的影响以及更好地管理水资源。基于冗余分析方法(RDA)和偏冗余分析方法(pRDA),该研究分析赣江主干丰枯水期水质变化,并分析1 km缓冲区土地利用组成、景观指数和地形因子3类景观因子(环境变量)对水体水质的影响。结果显示,溶解氧和镉浓度季节性差异明显,丰水期明显低于枯水期(P0.05),其余水质指标季节性差异不明显(P0.05),不同水质指标空间变化的异质性较大。各类景观因子对水质的贡献依次为:景观指数(13.9%~14.4%)地形因子(4.0%~15.9%)土地利用组成(3.7%~4.9%),景观因子对水质的影响总体丰水期高于枯水期;最大斑块指数(LPI)、景观形状指数(LSI)和平均斑块形状(SHMN)是影响赣江水质的主要景观指数,高程(HI)是影响水质的主要地形因子,未利用土地(UN)、草地(GRA)、林地(FOR)、建筑用地(BU)是影响水质变化的主要土地类型。研究结果可以为河流水质有效管理提供重要的理论依据。
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