摘要大别山西段罗山县被定位为国家级生态水源涵养区。为查清和评价区域水环境质量,考虑研究区水功能区划,在罗山县境内4条主要河流断面布置了99个采样点,选取pH值、化学需氧量(COD)、溶解氧、氨氮、总氮、总磷、铜和氟化物共8种指标进行水质分析,按照单因子和综合指数法对罗山县水环境质量进行评价,结合土壤地球化学调查结果等对影响因素进行分析。结果表明: ①罗山县水质综合污染指数为0.41,属Ⅲ级轻污染,总氮污染指数为1.5,最为严重,总磷、Cu的污染指数接近0,水体未受其污染; ② 7个水功能区中有5个水质达标,总体水环境良好,各水功能区综合污染指数排序:小潢河饮用水源区<竹竿河保留区<小潢河农业用水区<淮河保留区<小潢河源头保护区<浉河农业用水区<小潢河排污控制区; ③水体污染与土地利用类型、土壤侵蚀程度、土壤类型等土壤环境联系密切,局部水质受自然原因和人为保护因素综合影响。研究结果为区内不同流域水环境治理和水生态修复提供了依据。
Abstract：Luoshan County in the Western Dabie Mountain is identified as a national ecological water source conservation area. In order to find out and evaluate the regional water environment quality, with the consideration of water function zoning, the researchers in this paper arranged 99 sampling points from south to north in 4 main river sections in Luoshan County. Eight indexes were selected for water quality analysis, including pH, chemical oxygen demand (COD), dissolved oxygen, ammonia nitrogen, total nitrogen, total phosphorus, copper and fluoride. The water environment quality in Luoshan Country is assessed according to single factor and composite index methods, combing with the soil geochemistry survey results. The results show that ① The comprehensive pollution index of water quality in Luoshan county is 0.41, belonging to light pollution of class III. The total nitrogen pollution index is 1.5, which is the most serious. The total phosphorus and Cu pollution index were close to 0, and the water body is uncontaminated. ② The water quality in the 5 out of 7 water functional zones have reached the standard and the whole water environment is good. The comprehensive pollution index of each water functional area is ranked as Xiaohuang River drinking water source area< Zhugan River reserve area<Xiaohuang River agricultural water use area<Huaihe River reserve area<Xiaohuang River Yuantou protection area<Shihe agricultural water use area<Xiaohuang River sewage control area. ③ Water pollution is closely related to soil environment, such as land use type, soil erosion degree and soil type, and the local water quality is comprehensively affected by natural and man-made protection factors. These results would provide references for water environment management and water ecological restoration in the research area.
黄锦彦, 李新, 吴丰, 罗敏玄, 杨涛, 胡庚辛. 大别山西段罗山县水环境特征及其影响因素分析[J]. 中国地质调查, 2022, 9(6): 76-83.
HUANG Jinyan, LI Xin, WU Feng, LUO Minxuan, YANG Tao, HU Gengxin. Analysis of water environment characteristics and influencing factors in Luoshan County of Western Dabie Mountain. , 2022, 9(6): 76-83.
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