Study on Crust Development and Its Influences on Soil Physicochemical Properties in Horqin Sand

GUO Yi-rui; ZHAO Ha-lin; ZHAO Xue-yong; ZUO Xiao-an; LI Yu-qiang

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Study on Crust Development and Its Influences on Soil Physicochemical Properties in Horqin Sand

更新时间：2024-11-07

- Study on Crust Development and Its Influences on Soil Physicochemical Properties in Horqin Sand
- Vol. 21, Issue 1, Pages: 135-139(2007)
- 作者机构：
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  CLC： S158.2
- Published：2007
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GUO Yi-rui, ZHAO Ha-lin, ZHAO Xue-yong, et al. Study on Crust Development and Its Influences on Soil Physicochemical Properties in Horqin Sand[J]. 2007, 21(1): 135-139.
DOI：

GUO Yi-rui, ZHAO Ha-lin, ZHAO Xue-yong, et al. Study on Crust Development and Its Influences on Soil Physicochemical Properties in Horqin Sand[J]. 2007, 21(1): 135-139. DOI：

摘要

通过野外取样和室内分析

初步研究了科尔沁沙地植被恢复过程中结皮的理化性质及其结皮发育对下层土壤特性的影响。结果表明

半流动、半固定和固定沙丘分别发育了物理、地衣及苔藓结皮

结皮的厚度、紧实度、水分、粘粉粒含量及各种全效、速效养分随沙漠化逆转趋势依次增加。同时

结皮的存在增加了其下层土壤的容重值

提高了颗粒组成中的极细砂和粘粉粒含量

富集了结皮下土壤的有机质、全N、全P、速效N、速效P等养分

随着结皮的发育

结皮对下层土壤的上述影响作用从半流动沙丘到半固定、固定沙地呈逐渐增长的趋势。沙漠化逆转过程中

结皮对土壤养分的富集在0-5 cm范围内

由表及里呈递减趋势。同一沙丘结皮下0-2.5 cm层土壤的容重、粘粉粒含量、养分含量均高于2.5-5 cm层及对照无结皮层相对应的值。

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