Effects of Caragana microphylla Communities on Protection and Improvement of Soils in Horqin Sandy Land

HE Shan-feng; WANG Juan; QIU Lan-lan; JIANG De-ming; LUO Yong-ming

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Effects of Caragana microphylla Communities on Protection and Improvement of Soils in Horqin Sandy Land

- Effects of Caragana microphylla Communities on Protection and Improvement of Soils in Horqin Sandy Land
- Bulletin of Soiland Water Conservation Vol. 28, Issue 3, Pages: 73-77(2009)
- 作者机构：
  
  1. 中国科学院地理科学与资源研究所,北京,100101
  2. 中国科学院研究生院辽宁,沈阳,110016
  3. 中国石油集团安全环保技术研究院,北京,100039
  4. 中国科学院沈阳应用生态研究所,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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HE Shan-feng, WANG Juan, QIU Lan-lan, et al. Effects of Caragana microphylla Communities on Protection and Improvement of Soils in Horqin Sandy Land[J]. Bulletin of Soiland Water Conservation, 2009, 28(3): 73-77.
DOI：

HE Shan-feng, WANG Juan, QIU Lan-lan, et al. Effects of Caragana microphylla Communities on Protection and Improvement of Soils in Horqin Sandy Land[J]. Bulletin of Soiland Water Conservation, 2009, 28(3): 73-77. DOI：

摘要

以流动沙丘和不同恢复年限的人工和天然小叶锦鸡儿群落为研究对象，从植被重建前后土壤理化性质变化方面分析了小叶锦鸡儿群落保育土壤的作用。结果表明，6 a生、11 a生和22 a生人工小叶锦鸡儿群落对土壤理化性质均有明显的改善作用，且总体上土壤改良效果与恢复年限成正相关。建立人工植被后，土壤中微沙(0.05~0.1 mm)和黏粒(&lt；0.05 mm)的含量增加，表层(0—10 cm)土壤容重减小，孔隙度和饱和含水率增大，土壤持水能力提高；土壤有机碳、全氮、碱解氮、全磷、有效磷和有效钾含量均有不同程度增加，尤以表层增加幅度最大，并且灌丛对养分有明显的富集效应。

Abstract

Effects of Caragana microphylla communities with different ages on protection and improvement of soils were studied.Results showed that with establishment and development of vegetation

soil physical and chemical characteristics of C.microphylla communities were improved obviously and there was a positive correlation between soil improvement effects and restoration time.Porosity and percentage of tiny sand (0.05～0.1 mm) and clay particle ( < 0.05 mm) increased

bulk density of top soil (0—10 cm) decreased

and saturated water holding capacity improved.The co ntents of organic C

total N

total P

alkaline N

available P and available K increased to some extent

especially in the topsoil

and C.microphylla exhibited a significant enrichment effect on higher nutrients under their canopies.

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