Grain Size Distributions and Erosibility of Sandy Soils in Northwestern Shanxi Province

LIU Rong; SU Zhizhu; MA Yijuan; LIANG Aimin; WANG Guoling; YANG Xiongbing

doi:10.13961/j.cnki.stbctb.2018.06.001

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Grain Size Distributions and Erosibility of Sandy Soils in Northwestern Shanxi Province

- Grain Size Distributions and Erosibility of Sandy Soils in Northwestern Shanxi Province
- Bulletin of Soiland Water Conservation Vol. 38, Issue 6, Pages: 1-8(2018)
- 作者机构：
  
  1. 太原师范学院地理科学学院,山西,晋中,030619
  2. 山西大学历史文化学院,山西,太原,030006
  3. 中国科学院西北生态环境资源研究院,甘肃,兰州,730000
  4. 山西大学环境与资源学院,山西,太原,030006
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2018.06.001
  CLC：
- Published：2018
- 稿件说明：
移动端阅览
LIU Rong, SU Zhizhu, MA Yijuan, et al. Grain Size Distributions and Erosibility of Sandy Soils in Northwestern Shanxi Province[J]. Bulletin of Soiland Water Conservation, 2018, 38(6): 1-8.
DOI：

LIU Rong, SU Zhizhu, MA Yijuan, et al. Grain Size Distributions and Erosibility of Sandy Soils in Northwestern Shanxi Province[J]. Bulletin of Soiland Water Conservation, 2018, 38(6): 1-8. DOI： 10.13961/j.cnki.stbctb.2018.06.001.

摘要

[目的] 对晋西北沙化土地粒度特征及其可蚀性进行研究，为该区合理利用土地和有效防控风蚀沙化提供基础数据和科学依据。[方法] 选取晋西北沙化土地区的撂荒地、玉米地、人工林地、裸地4种地类0—20 cm的土壤作为研究对象，对不同地类土壤样品进行粒度分析，并采用粒级—标准偏差法对各地类易蚀颗粒进行提取。[结果] ①晋西北沙化土地区的土壤粒度组成均以极细砂（0.125～0.063 mm）、粉砂（0.063～0.002 mm）为主，含量占总粒级的70%以上。②不同地类中，撂荒地、玉米地和人工林地均以粉砂为优势粒级，其含量分别为52.86%，48.81%和43.52%，裸地以极细砂为优势粒级，其含量为45.64%。③撂荒地的易蚀颗粒（0.25～0.056 mm）最少，为47.18%，其次为玉米地（49.67%），这Ⅱ种地类的可蚀性均为中等，裸地的易蚀颗粒最多（68.80%），人工林地（55.83%）次之，可蚀性强。[结论] 土地利用方式会影响土壤颗粒的级配特征，使土壤性质发生变化，并导致土壤可蚀程度存在差异。裸地是该区今后土壤风蚀防控的重点地类，应采取地表覆盖等保护措施以降低风蚀程度。

Abstract

[Objective] The grain size distributions and erosibilities of sandy soils in Northwestern Shanxi Province were studied to provide basic data and scientific evidence for rational utilization of land and effective prevention to control wind erosion.[Methods] We studied 0-20 cm surface soils of different land use patterns in Northwestern Shanxi Province by extracting all types of potential erosive particles. Land use included abandoned land

corn field

artificial forest and bare land.[Results] ① Soil particle size of sandy land in northwest of Shanxi Province were mainly composed of very fine sand (0.125~0.063 mm) and silty sand (0.063~0.002 mm)

which were more than 70% of the total sand. ② The silty sand contents of abandoned land

corn land and artificial forest were 52.86%

48.81% and 43.52% respectively. Bare land has a high fine sand content of 45.64%. ③ The contents of erodible particle (0.25~0.056 mm) of the four land types increased in the following order:abandoned land (47.18%) < corn field (49.67%) < artificial forest (55.83%) < bare land (68.80%).[Conclusion] Different land use patterns would affect soil particles' grain size distributions and make changes in soil properties. Eventually these changes would lead to different soil wind erosion possibility. Bare land was the main field which should pay more attention to prevent wind erosion. Protection measures such as surface cover should be taken to reduce wind erosion.

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