坡位与坡向对岩石边坡人工土壤腐殖质组分及有机质的影响  

Effects of Slope Position and Aspect on Humus Component and Organic Matter of the Synthetic Soil on the Rock Slope

作　　者：高宏英[1] 艾应伟[1] 王克秀[1] 陈朝琼[1] 潘丹丹[1] 李传人[1] 李伟[2] 

机构地区：[1]四川大学生命科学学院,生物资源与生态环境教育部重点实验室,成都610064 [2]中国科学院成都山地灾害与环境研究所,成都610041

出　　处：《水土保持学报》2013年第6期244-248,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(41171175)

摘　　要：针对遂渝铁路遂宁站附近的典型岩石边坡,以临近的自然边坡为对照,就坡位与坡向对岩石边坡人工土壤腐殖质组分及有机质的影响进行研究。结果表明:岩石边坡人工土壤富啡酸和有机质含量均表现为坡中>坡上>坡下,胡敏酸含量表现为坡中>坡下>坡上,腐殖酸比表现为坡中=坡下>坡上。在同一坡位,岩石边坡人工土壤有机质含量均低于自然边坡。岩石边坡与自然边坡土壤中富啡酸含量均以坡中最高。在岩石边坡坡向上,西坡的人工土壤胡敏酸含量显著低于东坡、南坡、北坡,但东坡、南坡、北坡之间的人工土壤胡敏酸含量没有显著差异,不同坡向之间的人工土壤富啡酸含量差异不明显,腐殖酸比表现为南坡=北坡>东坡>西坡。岩石边坡富啡酸、胡敏酸与土壤理化性质有着显著的相关性,它们之间存在着紧密的联系。Effects of slope position and aspect on humus component and organic matter on the rock slope near the Suiyu railway was studied, and set the natural slope as control. The results showed that： The SOM and fulvic acid content of rock slope followed the law of mid-slope 〉top-slope 〉bottom-slope. Humic acid con- tent followed mid-slope 〉bottom-slope 〉top-slope. Humic acid ratio followed mid-slope =bottom-slope top-slope. The organic matter content of rock slope soil was lower than that of natural slope on the same po- sition. In addition, both rock slope and natural slope had highest fulvic acid content in mid-slope. Among the different rock slope aspects, the humic acid content in synthetic soil of west slope was significantly lower than that of east slope, south slope and north slope. But there were no significant differences among east slope, south slope and north slope. Humic acid ratio followed the law of south slope = north slope 〉east slope 〉west slope. And there was no significant difference among fulvic acid content of different slopes. The analysis of correlation indicated that humic acid or fulvic acid content were significant positive correlated with physical or chemical properties of soil, so there was a close relationship between them.

关 键 词：岩石边坡 人工土壤 腐殖质 坡位 坡向 有机质 

分 类 号：S153.621[农业科学—土壤学] S153.622[农业科学—农业基础科学]