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[1]GAO Hai-feng,BAI Jun-hong,WANG Qing-gai,et al.Distribution of Soil pH Values and Soil Water Contents in Floodplain Wetlands in the Lower Reach of Huolin River[J].Research of Soil and Water Conservation,2011,18(01):268-271.

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Distribution of Soil pH Values and Soil Water Contents in Floodplain Wetlands in the Lower Reach of Huolin River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 01 Page number: 268-271 Column: Public date: 2011-02-20

Title:: Distribution of Soil pH Values and Soil Water Contents in Floodplain Wetlands in the Lower Reach of Huolin River

Author(s):: GAO Hai-feng¹, BAI Jun-hong¹, WANG Qing-gai², HUANG Lai-bin¹, XIAO Rong¹; 1. State Key Lab of Water Environment Stimulation, School of Environment, Beijing Normal University, Beijing 100875, China;
2. Appraisal Center for Environment and Engineering, Ministry of Environmental Protection, Beijing 100012, China

Keywords:: floodplain wetland; soil water content; pH value; linear regression; nonlinear regression

CLC:: S153;S152.7

DOI:: -

Abstract:: Spatial distributions of soil pH values and water contents in July and September were investigated using grid sampling method and their correlations were also discussed in Erbaifangzi floodplain wetland in the lower reach of the Huolin River. The results showed that soil water contents and pH values were obviously different in July compared to September. Soil water contents were higher in July than in September, but soil pH values were lower in July compared to September. Soil basified obviously in September, especially the subsurface soil. Both soil water contents and pH values showed spatial distribution patterns of stripes and patches, with higher spatial variability in September. Soil water content and pH value had strong negative correlation, i.e. the patterns with higher soil water contents had lower soil pH values. The regression analysis showed that nonlinear regression was more suitable than linear regression to describe the significant negative correlation between soil water content and pH value when pH > 8.8.

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