干旱荒漠区人工梭梭林土壤碳氮磷密度与生态化学计量特征

魏亚娟; 汪季; 党晓宏; 韩彦隆; 高岩; 段晓婷; 金山

doi:10.13870/j.cnki.stbcxb.2022.03.037

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干旱荒漠区人工梭梭林土壤碳氮磷密度与生态化学计量特征

更新时间：2026-04-09

- 干旱荒漠区人工梭梭林土壤碳氮磷密度与生态化学计量特征
- Soil Carbon, Nitrogen and Phosphorus Densities and Ecological Stoichiometry Characteristics of
- 水土保持学报 2022年36卷第3期页码：259-266
- 作者机构：
  
  1. 内蒙古农业大学沙漠治理学院,呼和浩特,010018
  2. 内蒙古杭锦荒漠生态系统国家定位观测研究站,内蒙古,鄂尔多斯,017400
  3. 中盐内蒙古化工股份有限公司盐碱分公司资源保护站,内蒙古,阿拉善,750336
- 作者简介：
  
  [ "魏亚娟(1994-),女,博士研究生,主要从事荒漠化防治研究。E-mail:weiyajuan0305@163.com" ]
- 基金信息：
  
  国家自然科学基金项目(4196700)
- DOI：10.13870/j.cnki.stbcxb.2022.03.037
  中图分类号： S153.6
- 网络首发：2022-05-27，
  
  纸质出版：2022
- 稿件说明：
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魏亚娟, 汪季, 党晓宏, 等. 干旱荒漠区人工梭梭林土壤碳氮磷密度与生态化学计量特征[J]. 水土保持学报, 2022,36(3):259-266.

WEI Yajuan, WANG Ji, DANG Xiaohong, et al. Soil Carbon, Nitrogen and Phosphorus Densities and Ecological Stoichiometry Characteristics of[J]. 2022, 36(3): 259-266.
魏亚娟, 汪季, 党晓宏, 等. 干旱荒漠区人工梭梭林土壤碳氮磷密度与生态化学计量特征[J]. 水土保持学报, 2022,36(3):259-266. DOI： 10.13870/j.cnki.stbcxb.2022.03.037.

WEI Yajuan, WANG Ji, DANG Xiaohong, et al. Soil Carbon, Nitrogen and Phosphorus Densities and Ecological Stoichiometry Characteristics of[J]. 2022, 36(3): 259-266. DOI： 10.13870/j.cnki.stbcxb.2022.03.037.

摘要

为了阐明人工梭梭林土壤碳氮磷密度及其生态化学计量特征演变规律

以吉兰泰荒漠区不同林龄(3

16年)人工梭梭林为研究对象

分析0—20

20—40

40—60 cm土层土壤有机碳(SOC)、全氮(TN)、全磷(TP)密度和生态化学计量特征。结果表明:(1)4种林龄人工梭梭林0—60 cm土层SOC、TN含量及其密度随林龄增加而升高

而TP含量及其密度随林龄增加而降低。其中

6年梭梭林SOC、TN含量及其密度随土层深度增加而升高

TP含量及其密度则与之相反;11

16年梭梭林SOC、TN、TP含量及其密度随土层深度增加而降低。(2)4种林龄梭梭林土壤C∶N、C∶P、N∶P分别为2.24~9.21

1.59~7.05

0.56~0.81

均属于中等变异水平

且变异系数随林龄和土层深度增加逐渐减小

说明土壤C∶N、C∶P、[JP]N∶P趋于平稳状态。(3)林龄、土层深度及其交互作用显著影响SOC含量、SOC密度、C∶N、C∶P

对TN含量、TP含量、TN密度、TP密度、N∶P无显著影响。(4)土壤孔隙度(STP)与SOC密度呈显著正相关关系(P＜0.05)

说明土壤孔隙度增加有助于SOC密度增加

提高土壤肥力。在干旱荒漠区建植梭梭林有利于提高土壤肥力

改善干旱荒漠区土壤环境。

Abstract

To investigate the evolution of planting years on soil carbon

nitrogen

phosphorus densities

and eco-chemical stoichiometry in Halaxylon ammodendron plantations

an age sequence of H. ammodendron stands (3

11 and 16 years) were selected in desert area of Jilantai

densities and stoichiometry characteristics of soil organic carbon (SOC)

total nitrogen (TN)

total phosphorus (TP) at soil depths of 0-20

20-40

40-60 cm were measured. The results showed that:(1) The contents and densities of SOC and TN in 0-60 cm soil increased with the increase of stand age

whereas the content and density of TP decreased with the increase of stand age. The SOC and TN contents and densities increased with the increase of soil depth in 3-year and 6-year plantations

and the content and density of TP were moving in exactly the opposite direction. The contents and densities of SOC

TN and TP increased with the increase of soil depth in 11-year and 16-year plantations. (2) The C:N

C:P and N:P ratios were 2.24~9.21

1.59~7.05 and 0.56~0.81 with moderate spatial variation

and the coefficient of variation decreased with the stand age and soil depth

indicating that soil C:N

C:P and N:P ratios tended to remain stable. (3) Stand age

soil depth

and their interaction had a significant effect on SOC content

SOC density

C:N and C:P ratios

but had no significant effect on the N:P ratio and the contents and densities of TN and TP. (4) Soil porosity (STP) had a significant positive correlation with SOC density (P<0.05)

indicating that the increase of soil porosity is helpful to increase SOC density and improve soil fertility. Plantation of H. ammodendron can improve soil fertility and soil environment in arid desert area.

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Keywords

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