Effects of Sepiolite on the Stability of Aggregate and Content of Organic Carbon in Cd Contaminated Soils

WANG Runlong1; 2; WANG Nong2; 3; XU Yingming2; 3; SUN Yuebing2; 3

doi:10.13870/j.cnki.stbcxb.2017.06.029

您当前的位置：

首页 >

文章列表页 >

Effects of Sepiolite on the Stability of Aggregate and Content of Organic Carbon in Cd Contaminated Soils

更新时间：2025-03-12

- Effects of Sepiolite on the Stability of Aggregate and Content of Organic Carbon in Cd Contaminated Soils
- Vol. 31, Issue 6, Pages: 176-182(2017)
- 作者机构：
  
  1. 东北农业大学资源与环境学院,哈尔滨,150030
  2. 农业部环境保护科研监测所，农业部产地环境污染防控重点实验室,天津,300191
  3. 农业部环境保护科研监测所，天津市农业环境与农产品安全重点实验室,天津,300191
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.06.029
  CLC： S152.4
- Published：2017
- 稿件说明：
移动端阅览
WANG Runlong1, 2, WANG Nong2, et al. Effects of Sepiolite on the Stability of Aggregate and Content of Organic Carbon in Cd Contaminated Soils[J]. 2017, 31(6): 176-182.
DOI：

WANG Runlong1, 2, WANG Nong2, et al. Effects of Sepiolite on the Stability of Aggregate and Content of Organic Carbon in Cd Contaminated Soils[J]. 2017, 31(6): 176-182. DOI： 10.13870/j.cnki.stbcxb.2017.06.029.

摘要

通过大田试验，研究了在镉污染菜地原位钝化修复过程中海泡石对土壤团聚体组成和稳定性以及有机碳含量影响。结果表明，与对照相比，施用海泡石后整体上减少了5～8 mm和＜0.25 mm级别团聚体的数量，而2～5，1～2，0.5～1，0.25～0.5 mm级别团聚体数量则不同程度增加，且随着海泡石施用量增加，其数量呈显著增加（P＜0.05）。在0—15 cm土层中，土壤团聚体的平均质量直径（MWD）和几何平均直径（GMD）随海泡石施加浓度增加呈现先增加后降低，而在15—20 cm土层中则有所降低。施用低浓度海泡石（0.5%）时，土壤有机碳（SOC）含量有所减少，最大降低了21.1%，而当海泡石添加剂量达到1%（H1）和1.5%（H1.5）后，土壤有机碳含量整体上有所提高，较对照相比，最大增幅分别达到2.9%和70.3%。与对照相比，施用海泡石后增加了大团聚体中土壤有机碳的贡献率。

Abstract

Field experiments were conducted to investigate the effects of sepiolite on the composition and stability of soil aggregates and soil organic carbon content during the processes of in situ immobilization remediation for Cd contaminated vegetable field. The results showed that the amounts of 5～8 mm and ＜0.25 mm aggregates under the sepiolite treatments were decreased compared with the control. However

the contents of 2～5 mm

1～2 mm

0.5～1 mm and 0.25～0.5 mm soil aggregates were all significantly increased with the increment of sepiolite (P＜0.05). In 0—15 cm soil layers

mean weight diameter (MWD) and geometrical mean weight (GMD) of soil aggregates increased first and then decreased with the increase of the amount of sepiolite

whereas it was reduced in 15—20 cm soil layers. The concentration of soil organic carbon was reduced under the application of 0.5% sepiolite

with the maximum reduction up to 21.1%

while it was increased when the treatments of spiolite was 1% (H1) and 1.5% (H1.5)

with the maximum increase of 2.9% and 70.3%

respectively

when compared with the control. The soil organic carbon contribution rate in 5～8 mm

2～5 mm and 1～2 mm of soil aggregates was enhanced under different treatments of sepiolite.

关键词

Keywords

references

Views

1521

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Comparative Analysis of Differences， Improvement Effects， and Implications of Aggregates in Saline-Alkali Soils and Non-Saline-Alkali Soils

Impacts of Vegetation Restoration on Soil Aggregates and Soil Organic Carbon on the Terrace Wall of

Effects of Continuous Straw Returning and No-tillage on Soil Aggregates and Organic Carbon

Effects of Different Fertilization Regimes and Fertilization Ages on Size Distribution and Stability of Soil Aggregates

Study on Distribution and Stability of Soil Aggregate Under Vegetation at Different Elevations in Helan Mountains

Related Author

CAI Jinghui

HUANG Lihua

LIU Baishun

HUANG Guangzhi

LIANG Yanping

JIANG Xiaotong

WU Jin

LIU Yaojun

Related Institution

Northeast Institute of Geography and Agroecology， Chinese Academy of Sciences

University of Chinese Academy of Sciences

Jilin Da′an National Field Observation and Research Station of Agroecosystem， Da′an

School of Geographic Sciences, Hunan Normal University

Jiangxi Academy of Water Science and Engineering

⁰