Landscape Characteristics Affecting Spatial Patterns of Water Quality Variation in a Highly Disturbed Region.

ABSTRACT: Spatial patterns of water quality trends for 45 stations in control units of the Shandong Province, China during 2009-2017 were examined by a non-parametric seasonal Mann-Kendall's test (SMK) for dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), permanganate index (CODMn), total phosphorus (TP) and ammonia nitrogen (NH3-N). The DO concentration showed significant upward trends at approximately half of the stations, while other parameters showed significant downward trends at more than 40% of stations. The stations with downward trends presented significant spatial autocorrelation, and were mainly concentrated in the northwest and southwest regions. The relationship between the landscape characteristics and water quality was explored using stepwise multip

SUBMITTER: Hu X 

PROVIDER: S-EPMC6617499 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature