Effects of Soil Structure Stability of Different Land Cover Types on Nitrogen and Phosphorus Sediment Loss

YU Xing-xiu; MA Qian; LIU Qian-jin

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Effects of Soil Structure Stability of Different Land Cover Types on Nitrogen and Phosphorus Sediment Loss

更新时间：2024-11-07

- Effects of Soil Structure Stability of Different Land Cover Types on Nitrogen and Phosphorus Sediment Loss
- Vol. 25, Issue 4, (2011)
- 作者机构：
  
  1. 临沂大学化学与资源环境学院山东省水土保持与环境保育重点实验室
  2. 华中农业大学资源与环境学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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YU Xing-xiu, MA Qian, LIU Qian-jin. Effects of Soil Structure Stability of Different Land Cover Types on Nitrogen and Phosphorus Sediment Loss[J]. 2011, 25(4).
DOI：

YU Xing-xiu, MA Qian, LIU Qian-jin. Effects of Soil Structure Stability of Different Land Cover Types on Nitrogen and Phosphorus Sediment Loss[J]. 2011, 25(4). DOI：

摘要

以沂蒙山区的棕壤为例

利用野外原位模拟降雨试验

在分析比较5种典型覆被土壤结构稳定性的基础上

探讨不同土地覆被土壤结构稳定性对侵蚀泥沙全氮(N)、全磷(P)流失的影响。结果表明

土壤结构稳定性以山楂园和侧柏林较好

金银花和荒草地次之

花生地最差。不同土地覆被类型泥沙全N、全P流失特征差异明显

泥沙流失率与其全N、全P流失参量间具有显著的相关关系。土壤结构稳定性通过调节侵蚀产沙进而影响泥沙中N、P的流失特征

山楂园等土壤结构稳定性较好

侵蚀过程中更多地选择性搬运粘粒及精细颗粒

致使泥沙全N、全P流失量较少且含量和富集率较高;而花生地土壤结构稳定性较差

侵蚀过程中更多搬运砂粒及大团聚体破碎分散的细粒

使得泥沙全N、全P流失量较高且含量和富集率较低。泥沙全N、全P富集率在降雨过程中呈逐渐降低的变化

随着不同土地覆被类型土壤结构稳定性的降低

径流过程中泥沙全N富集率较全P的变化剧烈且下降幅度大。

Abstract

Difference structure stability were detected for brown soil collected from five typical land covers in the Yimeng mountainous area

and then the effect of soil structure stability on the sediment loss of total nitrogen(N) and phosphorus(P) were investigated for different land covers with the aid of field in-situ rainfall simulation tests.Results showed that

the soil structure stability was the strongest for hawthorn and arborvitae

moderate for weeds and honeysuckle

and the weakest for peanut.There were signi...

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