期刊论文

Study on the Composition and Spatial Distribution of Humus in Ancient Paddy Soils of Liyang Plain

中文

腐植酸

1671-9212

2015

2

9-14+38

10.19451/j.cnki.issn1671-9212.2015.02.004

国家自然科学基金（项目编号:41371288）；

本校为第一机构

为了探明埋藏古水稻土的腐殖质组分特征以及空间分布规律,采用野外采样和室内分析相结合的方法,以澧阳平原杉龙岗遗址古水稻土为材料,选取3处剖面（PA、PB、PC）,比较分析了各剖面中现代耕作水稻土层和埋藏古水稻土层的有机碳、胡敏酸（HA）、富里酸（FA）和胡敏素（HU）等含量变化情况。结果表明:杉龙岗遗址古水稻土腐殖质各组分含量为胡敏素>胡敏酸>富里酸;随着土层深度的增加,在现代耕作水稻土中各组分含量表现为波动性降低趋势,而在埋藏古水稻土中呈现微幅增加趋势;现代耕作水稻土中耕作层腐殖质累积速度较快,从上到下的迁移量相对较大,而埋藏古水稻土中各形态腐殖质含量变化相对较小,并且朝...

For fully understanding the composition and spatial distribution characters of Humus form in buried ancient paddy soil, field sampling and laboratory analysis were used to study ancient paddy soil in Sanlonggang village, Liyang plain. Three profiles were select to determine the content change of organic carbon, humic acid(HA), fulvic acid(FA) and humin(HU). Contrastive analysis was conducted on humus components changes in modern farming paddy soil and buried ancient paddy soil. The results showed that the humus composition of ancient paddy soils in Sanlonggang village site was humin > humic ac...