Conversion relationships between the chemical parameters in saturated and in 1∶5 soil/water extracts of saline and alkaline soils in Songnen Plain of Northeast China.

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Conversion relationships between the chemical parameters in saturated and in 1∶5 soil/water extracts of saline and alkaline soils in Songnen Plain of Northeast China.

CHI Chun-ming^1,2;WANG Zhi-chun¹

¹Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, China; ²Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Received:2008-04-25 Revised:1900-01-01 Online:2009-01-10 Published:2009-01-10

Abstract

Abstract: Ninety-four saline and alkaline soil samples were collected from the Songnen Plain of Northeast China, and their electrical conductivity (EC), sodium adsorption ratio (SAR), total cation concentration (TCC), and major cations (Na⁺, Ca²⁺, Mg²⁺, K⁺) concentrations in saturated and in 1∶5 soil/water extracts were determined. The EC, SAR, TCC, and Na⁺ concentration in saturated and in 1∶5 soil/water extracts had significant correlations, and the established regression equations could be used to convert these parameters in the two extracts. However, no correlations were observed between the K⁺, Ca²⁺ and Mg²⁺ concentrations in saturated and in 1∶5 soil/water extracts.

Key words: Small town, Land-use change, Ecological effect, Biodiversity

CHI Chun-ming^1,2;WANG Zhi-chun¹. Conversion relationships between the chemical parameters in saturated and in 1∶5 soil/water extracts of saline and alkaline soils in Songnen Plain of Northeast China.[J]. cje.

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Conversion relationships between the chemical parameters in saturated and in 1∶5 soil/water extracts of saline and alkaline soils in Songnen Plain of Northeast China.

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