Soil Nutrient Characteristic of Typical Shelterbelt in Hobq Desert

WANG Tao; MENG Zhongju; DANG Xiaohong; HE Lijuan; JIA Ruiting; LI Jiamin; SHI Shiling

doi:10.13870/j.cnki.stbcxb.2022.01.041

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Soil Nutrient Characteristic of Typical Shelterbelt in Hobq Desert

更新时间：2025-03-12

- Soil Nutrient Characteristic of Typical Shelterbelt in Hobq Desert
- Vol. 36, Issue 1, Pages: 325-331(2022)
- 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, 内蒙古杭锦旗,017400
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.01.041
  CLC： S151.9
- Published：2022
- 稿件说明：
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WANG Tao, MENG Zhongju, DANG Xiaohong, et al. Soil Nutrient Characteristic of Typical Shelterbelt in Hobq Desert[J]. 2022, 36(1): 325-331.
DOI：

WANG Tao, MENG Zhongju, DANG Xiaohong, et al. Soil Nutrient Characteristic of Typical Shelterbelt in Hobq Desert[J]. 2022, 36(1): 325-331. DOI： 10.13870/j.cnki.stbcxb.2022.01.041.

摘要

以库布齐沙漠典型防护林为研究对象

通过测定不同防护林的土壤理化性状

评估该防护林系统的土壤改良效益

为库布齐沙漠防护林的管理与养护提供理论依据。结果表明: (1)库布齐沙漠防护林营建15年后

在植被改良的作用下

原有的流沙质量发生了明显改变。与流沙环境相比

研究区土壤的碱解氮(AN)、速效磷(AP)、速效钾(AK)、有机质(SOM)、全氮(TN)、全磷(TP)、全钾(TK)含量分别提高了243.95%

37.89%

108.84%

138.71%

118.77%

42.41%

45.77%。与其他类型植被相比

沙枣防护林SOM、AK、TN含量的增长幅度最大

增幅分别为188.36%

151.84%

158.67%。樟子松防护林AN含量的增长幅度最大

增幅为481.86%。土壤物理性状随土层的增加规律各异

与流沙环境相比

土壤含水量(SWC)与孔隙度(PV)变化较显著。(2)研究区土壤的C/N变化范围为7.46~27.22;C/P变化范围为2.11~14.17;N/P变化范围为0.07~0.62。植被类型、土壤深度及二者的交互作用均极显著的影响土壤质量及化学计量特征

植被恢复主要受氮含量的限制。(3)通过冗余分析可知

土壤含水量和孔隙度与防护林土壤养分及化学计量特征相关性较显著

也是影响库布齐沙漠防护林土壤养分和化学计量特征的主要环境因子。研究结果可为评价库布齐沙漠防护林体系土壤改良效益提供数据支撑。

Abstract

Taking the typical shelter forest in Hobq Desert as the object

the physical and chemical properties of soil in different forests were measured to evaluate the soil improvement benefits of the shelter forest system and provide theoretical support for the management and maintenance of shelter forest in Hobq Desert. The results showed that: (1) 15 years after the establishment of the Hobq Desert Shelter Forest

the original quicksand texture had changed significantly due to the effect of vegetation improvement. Compared with the quicksand environment

the contents of soil AN

SOM

TP and TK increased by 243.95%

37.89%

108.84%

138.71%

118.77%

42.41% and 45.77%

respectively. Compared with other types of vegetation

the contents of SOM

AK and TN in Elaeagnus angustifolia shelter forest increased the most

with the increase of 188.36%

151.84% and 158.67%

respectively. The AN content in Pinus sylvestris var. mongolica shelterbelt had the largest increase

with an increase of 481.86%. The physical properties of soil showed different rules with the increasing of soil layers. Compared with the quicksand environment

soil water content (SWC) and porosity (PV) changed significantly. (2) The variation ranges of C/N

C/P and N/P in this area were 7.46~27.22

2.11~14.17 and 0.07~0.62

respectively. Vegetation type

soil depth and the interaction between them significantly affected soil quality

and vegetation restoration process in this study area was mainly limited by nitrogen content. (3)The redundancy analysis showed that the SWC and PV had significant correlation with the soil nutrients and stoichiometric characteristics of the shelter forest

and they were also the main environmental factors that affected the soil nutrients and stoichiometric features of the Hobq Desert Shelterbelt. These results could provide data support for evaluating the soil improvement benefits of the Shelter Forest System in Hobq Desert.

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