广东省赤红壤区土壤团聚体有机碳和铁氧化物特征及稳定性

唐贤; 黄伟濠; 卢瑛; 李博; 王超; 董玉清

doi:10.13870/j.cnki.stbcxb.2021.02.027

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广东省赤红壤区土壤团聚体有机碳和铁氧化物特征及稳定性

更新时间：2025-03-12

- 广东省赤红壤区土壤团聚体有机碳和铁氧化物特征及稳定性
- Characteristics and Stability of Organic Carbon and Ferric Oxidein in Soil Aggregates and Aggregate Stability in Lateritic Red Soil Region, Guangdong Province
- 水土保持学报 2021年35卷第2期页码：200-209
- 作者机构：
  
  华南农业大学资源环境学院,广州,510642
- 作者简介：
  
  [ "唐贤(1992—),男,在读博士研究生,主要从事水土保持生态修复与环境保护研究。E-mail:18910711250@163.com" ]
- 基金信息：
  
  NSFC-广东省联合基金集成项目（U1901601）
- DOI：10.13870/j.cnki.stbcxb.2021.02.027
  中图分类号： S151.9;S152.4
- 纸质出版：2021
- 稿件说明：
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唐贤, 黄伟濠, 卢瑛, 等. 广东省赤红壤区土壤团聚体有机碳和铁氧化物特征及稳定性[J]. 水土保持学报, 2021,35(2):200-209.

TANG Xian, HUANG Weihao, LU Ying, et al. Characteristics and Stability of Organic Carbon and Ferric Oxidein in Soil Aggregates and Aggregate Stability in Lateritic Red Soil Region, Guangdong Province[J]. 2021, 35(2): 200-209.
唐贤, 黄伟濠, 卢瑛, 等. 广东省赤红壤区土壤团聚体有机碳和铁氧化物特征及稳定性[J]. 水土保持学报, 2021,35(2):200-209. DOI： 10.13870/j.cnki.stbcxb.2021.02.027.

TANG Xian, HUANG Weihao, LU Ying, et al. Characteristics and Stability of Organic Carbon and Ferric Oxidein in Soil Aggregates and Aggregate Stability in Lateritic Red Soil Region, Guangdong Province[J]. 2021, 35(2): 200-209. DOI： 10.13870/j.cnki.stbcxb.2021.02.027.

摘要

通过野外采样和室内分析相结合，以广东省赤红壤区花岗岩（G）、第四纪红土（Q）和砂页岩（S）母质发育的林地（FL）、水田（PF）和旱地（UL）土壤为研究对象，分析了土壤团聚体有机碳及其组分和不同形态铁氧化物含量，探究了其对土壤团聚体稳定性的影响及贡献。结果显示：（1）3种母质发育的3种利用方式土壤团聚体均以>0.25 mm为主，2~5 mm团聚体以花岗岩母质发育林地土壤最高（58.51%），0.25~2 mm团聚体以花岗岩（62.93%）和第四纪红土（59.21%）母质发育水田和旱地土壤最高；土壤团聚体平均重量直径（MWD）和几何平均直径（GMD）以砂页岩母质发育林地土壤最高；（2）3种母质发育林地土壤团聚体有机碳及其组分主要分布在2~5 mm粒径中，水田和旱地土壤团聚体有机碳及其组分主要分布在<0.053 mm粒径中；3种母质发育林地土壤团聚体铁氧化物含量主要分布在<0.053，0.25~2 mm粒径中，水田和旱地土壤团聚体铁氧化物含量主要分布在<0.053 mm粒径中。（3）相关分析和主成分分析表明，MWD、GMD与团聚体HAC、HAC/FAC、Fefr和Feco呈显著相关（P<0.05）；不同母质和利用方式以砂页岩母质发育的林地土壤团聚体胶结能力最好。研究表明，不同母质和利用方式土壤团聚体HAC、HAC/FAC、Fefr和Feco含量分布差异显著，进而影响了土壤团聚体分布和稳定性，同时砂页岩母质发育的林地土壤团聚体结构较稳定。

Abstract

Soils derived from granite (G)

quaternary red earth (Q)

and sand shale (S) with forestland (FL)

paddy field (PF)

and upland (UL) were collected in Guangdong lateritic red soil region. The content of ferric oxide

organic carbon and its fractions in soil aggregate were analyzed

and the differences of soil aggregate stability and the factors affecting the aggregate stability were explored. The results showed that:(1) Aggregates larger than 0.25 mm in soil dominated under three land use types with three parent materials; 2~5 mm aggregates was the highest (58.51%) in forestland soil derived from granite; 0.25~2 mm aggregates was the highest in paddy field and upland soils derived from granite (62.93%) and quaternary laterite (59.21%). Geometric mean diameter (GMD) and mean weight diameter (MWD) of soil aggregates were highest in forestland with sand shale parent materials. (2) The soil organic carbon (SOC) and component content in forest land soil were mainly distributed in 2~5 mm aggregates derived from three parent materials

and that in paddy and upland soils were mainly distributed in <0.053 mm aggregates. The ferric oxide form content in forestland soil were mainly distributed in <0.053 and 0.25~2 mm aggregates derived from three parent materials

and that in paddy and upland soils were mainly distributed in <0.053 mm aggregate. (3) Correlation analysis and principal component analysis showed that the MWD and GMD had significant correlations with HAC

HAC/FAC

Fefr

and Feco. Forestland soil aggregates derived from sand shale parent materials had the best cementing ability among different land use types and parent materials. The results showed that the influence of parent materials and utilization modes on the stability of aggregates was significant

mainly due to the differences of HAC

HAC/FAC

Fefr

and Feco. At the same time

forestland soil aggregates with sand shale parent materials had higher structural stability.

关键词

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