COEFFICIENT OF LINEAR EXTENSIBILITY OF SALT-AFFECTED SOILS AND ITS RELATIONS TO SOIL CHEMICAL PROPERTIES

被引：0

作者：

Jiang Xuyu ^{[1
]}

Yang Hongtao ^{[2
]}

Wang Zhichun ^{[1
]}

Yang Fan ^{[1
]}

An Fenghua ^{[1
]}

机构：

[1] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China

[2] Yichun Univ, Yichun 336000, Peoples R China

来源：

FRESENIUS ENVIRONMENTAL BULLETIN | 2022年 / 31卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Saline-sodic soils; Coefficient of linear extensibility; Soil chemical properties; ORGANIC-MATTER; SONGNEN PLAIN; SHRINKAGE; BEHAVIOR; CRACKING; CLAY; STABILITY; CAPACITY; DYNAMICS; GENESIS;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The coefficient of linear extensibility (COLE) of soils that undergo volumetric changes due to soil moisture fluctuation; is an inherent property that is used to estimate soil extensibility. Many works on the COLE have been performed with fen peat soils, puddled soils and clayey soils; however, there is limited information regarding the COLE of saline-sodic soils. In this study, soil samples were collected from a hard saline-sodic soil region in the Songnen plain, northeast China, to determine the COLE of this soil and its relation to soil chemical properties. The results show that the COLE of the saline-sodic soils varied from 0.044 to 0.201 cm/cm, with an average of 0.117 cm/cm. Moreover, significant correlations (vertical bar r vertical bar = 0.491 similar to 41793, P < 0.01) were observed between the COLE and soil chemical properties. In addition, the COLE of saline-sodic soils can be predicted on the basis of soil pH, EC and SAR, and 67.2% of the variance in the COLE can be attributed to soil pH, EC and SAR. This work was carried out to investigate the COLE of saline-sodic soils, which will improve our understanding of the COLE of saline-sodic soils and the relationship between the COLE and soil chemical properties.

引用

页码：2117 / 2125

页数：9

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