ISWC OpenIR  > 水保所知识产出(1956---)
土壤胶结物质分布特征及其对黄土大团聚体稳定性的影响
王子龙1; 胡斐南1,2; 赵勇钢3; 谭文峰1,4; 赵世伟1,2
2016
Source Publication水土保持学报
Volume30Issue:5Pages:331-336
Abstract

通过对子午岭林区顶级植被辽东栎群落0—100cm土层有机无机胶结物质的含量与类型、土壤大团
聚体稳定性进行野外调查采样与室内测定,对胶结物质含量与分布及其对大团聚体稳定性的影响进行了
研究,探讨了不同胶结物质对大团聚体稳定性的影响。结果表明:(1)土壤有机碳和碳酸钙含量在剖面上
呈现出完全相反的分布规律。有机碳含量随土层的加深而降低,其中0—20cm土层中有机碳含量显著高
于20—100cm土层;而碳酸钙含量随土层的加深而增加,其中20—100cm 土层中碳酸钙含量显著高于
0—20cm土层。土壤黏粒含量随土层的加深逐渐增加,但总体上变化不明显。(2)土壤大团聚体稳定性随
土层的加深而降低,其中在20—70cm土层中大团聚体稳定性随土壤深度的增加变化最为剧烈(与0—20
cm土层相比,破坏率增加了581.00%)。40—100cm土层中大团聚体破坏率是0—20cm土层中的7.25
倍,表明表层大团聚体稳定性远远高于底层。(3)黄土大团聚体稳定性的提高主要取决于土壤有机碳含
量。而在有机碳组分中,矿物结合态有机碳对大团聚体稳定性的提高起最直接作用。研究结果揭示了黄
土主要胶结物质在土壤剖面中的分布特征,明确了矿物结合态有机碳是直接影响黄土大团聚体稳定性最
强烈的胶结物质,这为培育良好的土壤结构体提供了一定的科学依据。

Other Abstract

Abstract:In order to investigate the influence of different cementing materials on the stability of macro-aggregate,
this study investigated the content and types of organic and inorganic cementation materials and
macro-aggregate stability in the 0—100cm soil profile of Quercus wutaishansea community in the Ziwuling
forest region by field investigation and laboratory test,and analyzed the relationships between distribution of
cementing material and its effect on macro-aggregate stability.The results showed:(1)Organic carbon and
calcium carbonate showed completely opposite distribution in profile,and the content of organic carbon decreased
with soil depth.The content of organic carbon in 0—20cm soil layer was significantly higher than
that in 20—100cm soil layers.The content of calcium carbonate increased with soil depth,and the content in
the 20—100cm was significantly higher than 0—20cm soil layers.(2)The aggregate stability decreased withthe soil depth.The 20—70cm layer had the most dramatic changes(compared with the 0—20cm soil layers,
the destruction rate increased by 581.00%).The proportion of aggregate destruction of 40—100cm soil layer
was 7.25times larger than that of 0—20cm soil layer,so the aggregate stability of surface was significantly
higher than the bottom.While the clay content increased gradually with the increasing of soil depth,
but the change was not obvious.(3)The improvement of macro-aggregate stability mainly depended on the
content of soil organic carbon.Mineral-associated organic carbon had the most direct effect on the stability of
macro-aggregate in the organic carbon fractions.The results of this study revealed the distribution characteristics
of main cementing materials and made clear that the mineral bound organic carbon was the most powerful
cementing material which had a direct impact on the stability of the macro-aggregate of the loess.It provided
a scientific basis for the cultivation of fine aggregate structure.

Keyword辽东栎群落 胶结物质 大团聚体稳定性 有机碳组分 矿物结合态有机碳
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8689
Collection水保所知识产出(1956---)
Affiliation1.中国科学院水利部水土保持研究所
2.西北农林科技大学水土保持研究所
3.山西师范大学生命科学学院
4.华中农业大学资源与环境学院
First Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
王子龙,胡斐南,赵勇钢,等. 土壤胶结物质分布特征及其对黄土大团聚体稳定性的影响[J]. 水土保持学报,2016,30(5):331-336.
APA 王子龙,胡斐南,赵勇钢,谭文峰,&赵世伟.(2016).土壤胶结物质分布特征及其对黄土大团聚体稳定性的影响.水土保持学报,30(5),331-336.
MLA 王子龙,et al."土壤胶结物质分布特征及其对黄土大团聚体稳定性的影响".水土保持学报 30.5(2016):331-336.
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