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麻雀坑水流域水土环境磷污染特征及来源分析
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Abstract:
随着经济发展和城市化进程加速，磷污染成为我国河、湖水体污染的主要原因之一，威胁着人民生产生活用水安全。本研究以深圳麻雀坑水流域为例，通过实地采样和化学测量分析，评估了不同来水和土地利用条件下水、土环境介质中的磷污染及其空间分布特征，识别了磷污染的主要来源，得出以下结论：1) 麻雀坑水流域中磷的形态变化易受环境因素影响；2) 磷的赋存形态随空间变化显著；3) 面源污染和湿地内源是造成该流域磷污染的主要原因。
With the acceleration of economic development and urbanization, phosphorus (P) pollution has become one of the main causes of water pollution in rivers and lakes in China, threatening the water safety for production and domestic use. In this study, the characteristics of P pollution in the Maquekeng watershed were studied through field sampling and laboratory chemical analysis, in which the P content and its spatial distribution in the soil and water environment under different water and land use conditions were evaluated and the sources of P pollution were identified. The main conclusions are as follows. 1) The morphological change of P in this watershed is easily affected by environmental factors; 2) The forms of P change significantly with space; 3) Nonpoint source pollution and endogenous pollution (i.e., wetlands) are the main causes of P pollution.
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