Quantitative Assessment of Soil Physical Quality in Northern China Based on S-theory
Quantitative Assessment of Soil Physical Quality in Northern China Based on S-theory
复制标题
基于S理论的中国北方土壤物理质量定量评价
DOI：
10.1590/01000683rbcs20150030
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发表时间：
2015-09
期刊：
影响因子：
--
通讯作者：
雷少刚
中科院分区：
文献类型：
--
作者：
杨德军;卞正富;张科峰;熊集兵;雷少刚
Quantitative assessment of soil physical quality is of great importance for eco-environmental pollution and soil quality studies. In this paper, based on the S-theory, data from 16 collection sites in the Haihe River Basin in northern China were used, and the effects of soil particle size distribution and bulk density on three important indices of theS-theory were investigated on a regional scale. The relationships between unsaturated hydraulic conductivityKi at the inflection point and S values (S/hi) were also studied using two different types of fitting equations. The results showed that the polynomial equation was better than the linear equation for describing the relationships between -log Ki and -logS, and -log Kiand -log (S/hi)2; and clay content was the most important factor affecting the soil physical quality index (S). The variation in the S index according to soil clay content was able to be fitted using a double-linear-line approach, with decrease in the S index being much faster for clay content less than 20 %. In contrast, the bulk density index was found to be less important than clay content. The average S index was 0.077, indicating that soil physical quality in the Haihe River Basin was good.
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DOI：
--
发表时间：
2001
期刊：
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影响因子：
--
作者：
Z. Xi;C. Land
通讯作者：
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影响因子：
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作者：
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通讯作者：
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DOI：
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发表时间：
2006
期刊：
China Rural Water and Hydropower
影响因子：
--
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DOI：
10.1016/j.eswa.2010.05.061
发表时间：
2010-12
期刊：
Expert Syst. Appl.
影响因子：
--
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通讯作者：
S. Weng;G. Huang;Y. Li