Spatial variability of nitrate pollution and its sources in a hilly basin of the Yangtze River based on clustering.

ABSTRACT: Nitrate (NO₃^-) pollution is a serious global problem, and the quantitative analysis of its sources contributions is essential for devising effective water-related environmental-protection policies. The Shengjin Lake basin, located in the middle to lower reaches of the Yangtze River in China was selected as the research area in our study. We first grouped 29 surface water samples and 33 groundwater samples using cluster analysis, and then analyzed potential nitrate sources for each dataset of δ¹⁵N-NO₃^- and δ¹⁸O-NO₃^- isotope values by applying a Bayesian isotope-mixing model. Our results show that the nitrogen pollution in the surface-ground water in the study area seriously exceeded to class V of the Env

SUBMITTER: Cui Y 

PROVIDER: S-EPMC8373962 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature