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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Impacts of Anthropogenic Changes on the Mun River Water: Insight from Spatio-Distributions and Relationship of C and N Species in Northeast Thailand
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Impacts of Anthropogenic Changes on the Mun River Water: Insight from Spatio-Distributions and Relationship of C and N Species in Northeast Thailand

机译：人为变化对孟河水的影响：从泰国东北部的碳氮物种的空间分布及其相互关系中获得的启示

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摘要

C and N species, including dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), dissolved organic nitrogen (DON), NO3− and NH4+ contents in 57 river water samples collected from the Mun River of Thailand were measured to determine the relationships between these dissolved load species and their impacts on the environment. DOC values varied between 1.71 and 40.08 mg/L, averaging 11.14 mg/L; DON values ranged from 0.20 to 1.37 mg/L, with an average value of 0.48 mg/L; NO3−-N values averaged 0.18 mg/L; and NH4+-N values averaged 0.15 mg/L. DOC contents increased while DON and NO3− values decreased along the flow direction. The concentrations of NH4+ maintained the same level in the whole watershed. DOC and DON values exhibited clearly higher concentrations in comparison with other rivers worldwide and were inextricably linked with anthropogenic inputs. The relationships of DOC, DON, and anthropogenic ions imply that there are two different anthropogenic sources (industrial activities and agricultural activities) of the dissolved load in the Mun River watershed. The limited correlations between the DON, NO3−, and NH4+ indicate that the N species are not dominated by a single factor, and reciprocal transformations of riverine N pool are complex. Based on the environmental water quality standard reported by the EC (European Communities) and the World Health Organization, assessments of the water quality using the parameters of pH, dissolved oxygen (DO), NO3−, NH4+, and TN (total nitrogen) in the Mun River were conducted. The results demonstrate that the river water faces potential environmental pollution, and anthropogenic inputs endanger local water quality and the aquatic community. Therefore, the local government should restrict and reduce the anthropogenic inputs discharged in to rivers, and launch long-term monitoring of water quality.
机译：57条河流中的C和N种类，包括溶解有机碳（DOC），溶解无机碳（DIC），溶解有机氮（DON），NO3 -和NH4 + 含量测量了从泰国芒河收集的水样，以确定这些溶解的负荷物质与其对环境的影响之间的关系。 DOC值在1.71至40.08 mg / L之间变化，平均为11.14 mg / L； DON值在0.20至1.37 mg / L的范围内，平均值为0.48 mg / L； NO3 - -N平均值为0.18 mg / L; NH4 + -N平均值为0.15 mg / L。 DOC含量增加，而DON和NO3 -值沿流动方向降低。在整个流域中，NH4 + 的浓度保持相同的水平。与全球其他河流相比，DOC和DON值的浓度明显更高，并且与人为投入有着千丝万缕的联系。 DOC，DON和人为离子之间的关系表明，芒河流域的溶解负荷有两种不同的人为来源（工业活动和农业活动）。 DON，NO3 -和NH4 + 之间的相关性有限，这表明N种不是由一个单一因素主导的，河流N库的倒数转换是复杂的。根据EC（欧洲共同体）和世界卫生组织报告的环境水质标准，使用pH，溶解氧（DO），NO3 -，NH4 <在芒河中进行了sup> + 和TN（总氮）的测定。结果表明，河水面临潜在的环境污染，人为输入危害当地水质和水生社区。因此，地方政府应限制和减少排入河流的人为投入，并对水质进行长期监测。

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