Distribution Characteristics and Soil Organic Carbon of Soil Water-Stable Aggregates with Different De-Farming Patterns

HE Shu-qin; ZHENG Zi-cheng; GONG Yuan-bo

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Distribution Characteristics and Soil Organic Carbon of Soil Water-Stable Aggregates with Different De-Farming Patterns

更新时间：2024-11-07

- Distribution Characteristics and Soil Organic Carbon of Soil Water-Stable Aggregates with Different De-Farming Patterns
- Vol. 25, Issue 5, (2011)
- 作者机构：
  
  1. 四川农业大学林学院林业生态工程省级重点实验室
  2. 四川农业大学资源环境学院
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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HE Shu-qin, ZHENG Zi-cheng, GONG Yuan-bo. Distribution Characteristics and Soil Organic Carbon of Soil Water-Stable Aggregates with Different De-Farming Patterns[J]. 2011, 25(5).
DOI：

HE Shu-qin, ZHENG Zi-cheng, GONG Yuan-bo. Distribution Characteristics and Soil Organic Carbon of Soil Water-Stable Aggregates with Different De-Farming Patterns[J]. 2011, 25(5). DOI：

摘要

采用野外调查和室内分析相结合的方法

对退耕还茶地和退耕还林地土壤水稳性团聚体及其有机碳分布特征进行研究。结果表明:(1)不同土层退耕还茶地土壤各粒径水稳性团聚体占总团聚体的比例均以<0.25mm的含量最大

且与其他粒径间存在极显著差异;除2～1mm粒径外

退耕还茶地土壤与退耕还林地同粒级水稳性团聚体含量差异不显著。(2)0-20cm土层

团聚体的平均重量直径和平均几何直径表现为退耕还林较退耕还茶大

虽退耕还茶地破坏率与退耕还林的差异不显著

但退耕还茶地土壤团聚体破坏率高于退耕还林地的;20-40cm土层结果与之相反。(3)0-20cm土层

退耕还茶地随着水稳性团聚体粒径的减小土壤有机碳含量呈先减少

再增加

然后减少

最后增加的变化

且退耕还茶地土壤有机碳含量较退耕还林的高;20-40cm土层

退耕还茶地随着水稳性团聚体粒径的减小土壤有机碳含量呈先减少

再增加

最后减少的变化

除0.5～0.25mm和>5mm这2个粒级外

退耕还茶地土壤有机碳含量较退耕还林的低。

Abstract

The distribution characteristics of soil water-stable aggregates in the conversion of farmland to tea plantations and the organic carbon contents in soil water-stable aggregates were studied by the combinative means of field investigation and laboratory analysis.The results showed that:(1)Soil water stable aggregates of the total proportion of aggregates were dominated by <0.25 mm particle size

and the particle size and the other were significant differences.Except for 2~1 mm particle size

the same size par...

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Related Institution

南京农业大学农业资源与生态环境研究所

TANG Guang-mu1,XU Wan-li1,GE Chun-hui1,MA Hai-gang1,ZHENG Jin-wei2,LI Lian-qing2,PAN Gen-xing2(1.Institute of Soil and Fertilizer & Agricultural Sparing Water,Xinjinag Academy of Agricultural Science,Urumqi 830091,2.Institute of Resource,Ecosystem and Environment of Agriculture,Nanjing Agricultural University,,)

Zhejiang Key Laboratory of Soil Remediation and Quality Improvement

Institute of Environment Resource and Soil Fertilizer， Zhejiang Academy of Agricultural Sciences

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