Notice of Retraction: Primary Study on Response of Water Quality to Land Use Pattern in a Medium-Sized Watershed, Southeast of China

Abstract

Geoinformations technology and multivariate statistical analysis method were coupled to reveal the response of water quality to land use pattern in Jiulong river watershed, the second largest watershed of Fujian province with intensive agricultural activities. The study results obtained show that in entire watershed level, arable land (ALU) is the most important factor influencing DO in stream, moreover, buildup land (ULU) is the important predictor for BOD5, CODMN , NH3-N. In the buffer-zone level, BOD5 and NH3-N are positive correlated to ULU, and negative correlative to waterbody area, DO is positive correlated to natural land use (NLU), and negative correlated to ALU, which all are similar to the results obtained at entire watershed scale. To great extent, buffer zone of land use pattern can predict river water quality in study watershed. Multiple regression of relationship between land use pattern and water quality in different spatial levels enable us to improve comprehensive understanding of the relationship between land use pattern and land use in a medium-sized watershed in southeast of China.