Relationship on Dark2brown Soil Humus Distribution and Soil Structure in Three Parallel Rivers Area

WANG Jing; HE Zhong-jun; WANG Li-dong; LONG Xing-zhi; HE Shun-rong; WANG Jian-zhong; HONG Chang-qing

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Relationship on Dark2brown Soil Humus Distribution and Soil Structure in Three Parallel Rivers Area

- Relationship on Dark2brown Soil Humus Distribution and Soil Structure in Three Parallel Rivers Area
- Bulletin of Soiland Water Conservation Vol. 29, Issue 1, Pages: 53-58(2010)
- 作者机构：
  
  1. 云南农业大学资源与环境学院,云南,昆明,650201
  2. 云南省丽江市土壤肥料工作站,云南,丽江,674100
  3. 云南省迪庆州土壤肥料工作站,云南,迪庆,674400
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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WANG Jing, HE Zhong-jun, WANG Li-dong, et al. Relationship on Dark2brown Soil Humus Distribution and Soil Structure in Three Parallel Rivers Area[J]. Bulletin of Soiland Water Conservation, 2010, 29(1): 53-58.
DOI：

WANG Jing, HE Zhong-jun, WANG Li-dong, et al. Relationship on Dark2brown Soil Humus Distribution and Soil Structure in Three Parallel Rivers Area[J]. Bulletin of Soiland Water Conservation, 2010, 29(1): 53-58. DOI：

摘要

采用野外调查与室内分析相结合的方法

研究了"三江并流区"5个典型暗棕壤剖面腐殖质特性及其与土壤结构的关系

以期为该区土地资源的保护提供有利依据。结果表明

腐殖质含量与有机碳的分布规律一致

即腐殖质层>淋溶层>淀积层>母质层。腐殖质组成中

以胡敏素(HA)占绝大多数。HA分子复杂程度较高

化学稳定性较强。土壤腐殖化程度与富里酸FA分子复杂程度和化学稳定性一致

随年降雨量的增加而降低

依次为哈巴雪山>千湖山>梅里雪山>云岭>高黎贡山。1～0.5mm粒径团聚体含量居多

且粒径含量与腐殖酸含量均随年均温的升高而降低

依次为高黎贡山>梅里雪山>千湖山>哈巴雪山>云岭。研究结果表明

表层有机碳与1～0.5mm粒径含量相关

胡敏酸和富里酸与1～0.5

0.5～0.25mm粒径含量呈显著相关。

Abstract

Properties of humus and soil structure of five typical dark brown soil profile in“Three Parallel Rivers Area”were studied in the lab and through field survey as well to gain a better knowledge to protect the land resources in the view and provide a favorable basis.Results show that the content of humus and the distribution rule of organic carbon is the same

that is humus layer>leached layer>deposition layer>parent layers.Humin takes the major part in the Humus composition.HA have a higher degree of molecular complexity and chemical stability strong.The degree of soil humus and the complexity of the FA molecules and the chemical stability is the same

with the increase in annual rainfall decreases

followed by Haba Snow Mountain>Qianhu Mountain>Meili Snow Mountain>Yunling>Gaoligongshan.The content of water-stable aggregate are mostly content of 1～0.5 mm diameter

and the size of content and humic acid levels were elevated with the annual average temperature decreases

followed by Gaoligongshan>Meili Snow Mountain>Qianhu Mountain>Haba Snow Mountain>Yunling.Surface organic carbon is related to the content of the 1～0.5 mm size

humic acid and fulvic acid are also significantly related to particle size of 1～0.5 mm

0.5～0.25 mm content.

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