基于CT扫描技术的土柱孔隙结构及其抗侵蚀能力研究——以种植百喜草为例

张亭; 施明明; 李鑫; 王新军; 曹龙熹

doi:10.13961/j.cnki.stbctb.2023.05.018

您当前的位置：

首页 >

文章列表页 >

基于CT扫描技术的土柱孔隙结构及其抗侵蚀能力研究——以种植百喜草为例

试验研究

- 基于CT扫描技术的土柱孔隙结构及其抗侵蚀能力研究——以种植百喜草为例
- A Study on Pore Structure and Erosion Resistance of Soil Column Based on CT Scanning Technology —Taking Bahiagrass Plantation as an Example
- 水土保持通报 2023年43卷第5期页码：148-155
- 作者机构：
  
  1. 成都理工大学生态环境学院,四川,成都,610059
  2. 成都理工大学地球科学学院,四川,成都,610059
  3. 交通运输部科学研究院,北京,100029
- 作者简介：
- 基金信息：
  
  国家重点研发计划项目“陆路交通基础设施与生态环境协调机制研究及集成示范”(2021YFB2600105)
- DOI：10.13961/j.cnki.stbctb.2023.05.018
  中图分类号： S157;S154.4
- 纸质出版：2023
- 稿件说明：
移动端阅览
张亭, 施明明, 李鑫, 等. 基于CT扫描技术的土柱孔隙结构及其抗侵蚀能力研究——以种植百喜草为例[J]. 水土保持通报, 2023,43(5):148-155.

Zhang Ting, Shi Mingming, Li Xin, et al. A Study on Pore Structure and Erosion Resistance of Soil Column Based on CT Scanning Technology —Taking Bahiagrass Plantation as an Example[J]. Bulletin of Soiland Water Conservation, 2023, 43(5): 148-155.
张亭, 施明明, 李鑫, 等. 基于CT扫描技术的土柱孔隙结构及其抗侵蚀能力研究——以种植百喜草为例[J]. 水土保持通报, 2023,43(5):148-155. DOI： 10.13961/j.cnki.stbctb.2023.05.018.

Zhang Ting, Shi Mingming, Li Xin, et al. A Study on Pore Structure and Erosion Resistance of Soil Column Based on CT Scanning Technology —Taking Bahiagrass Plantation as an Example[J]. Bulletin of Soiland Water Conservation, 2023, 43(5): 148-155. DOI： 10.13961/j.cnki.stbctb.2023.05.018.

摘要

[目的] 分析百喜草土柱孔隙结构与土壤抗侵蚀能力之间的联系，为水土保持植物措施的优化布设以及效益评估提供科学依据。[方法] 依托植物土柱长期微区试验，通过CT扫描技术研究种植百喜草的土柱孔隙指标(孔隙长度密度、体积密度、表面积密度和孔隙数密度)，开展边坡水槽冲刷试验。设置3个坡度(10°，20°和30°)和5个流量(0.8，1.6，2.4，3.2，4.0 L/s)组合量化土壤抗侵蚀能力，分析孔隙指标与抗侵蚀能力因子之间的关系。[结果] 百喜草土柱孔隙发育程度随生长时间不断增强，而随土层深度减弱；4个孔隙结构指标在0—5 cm土层的数值远大于5—10 cm土层，且表层0—5 cm的平均土壤细沟可蚀性(0.026 s/m)和临界水流剪切力(7.0 Pa)分别是下层5—10 cm的0.33，1.54倍。[结论] 植物根系发育的孔隙指标能够表征土壤抗侵蚀能力变化，CT扫描获取的4个孔隙结构指标与细沟可蚀性等因子显著相关，其中孔隙表面积密度与土壤抗侵蚀能力指标关系最为密切。

Abstract

[Objective] The relationship between soil column pore structure and soil erosion resistance for soil columns with Bahiagrass was analyzed in order to provide a scientific basis for the optimal arrangement of plants for soil and water conservation and to assess the benefits of planting Bahiagrass. [Methods] This study was conducted using long-term experiments of Bahiagrass grown in soil columns. Four pore indicators (pore length density

bulk density

surface area density

and pore number density) of Bahiagrass soil columns were quantified by CT scanning technology. Flushing tests using a flume with variable slopes were carried out to quantify soil erosion resistance at three slopes (10°

20°

and 30°) and five runoff rates (0.8

1.6

2.4

3.2

and 4.0 L/s). The relationships between pore structure characteristics and erosion resistance factors were then determined. [Results] Bahiagrass root system development increased during the growth period

but decreased with soil depth. The values of four pore structure indicators in 0—5 cm soil layer were much higher than those in 5—10 cm soil layer

and the average soil rill erodibility (0.026 s/m) and critical shear stress (7.0 Pa) in 0—5 cm surface layer were 0.33 and 1.54 times the values of those respective parameters in 5—10 cm lower soil layer. [Conclusion] The pore characteristics of plant root development indicated soil erosion resistance. The four pore structure indicators obtained by CT scanning were significantly related to factors such as rill erodibility. The pore surface area density was most closely related to the erosion resistance factors.

关键词

Keywords

references

袁仁文,刘琳,张蕊,等.植物根际分泌物与土壤微生物互作关系的机制研究进展[J].中国农学通报,2020,36(2):26-35.

刘均阳,周正朝,苏雪萌.植物根系对土壤团聚体形成作用机制研究回顾[J].水土保持学报,2020,34(3):267-273.

刘定辉,李勇.植物根系提高土壤抗侵蚀性机理研究[J].水土保持学报,2003(3):34-37.

Knapen A, Poesen J, Govers G, et al. Resistance of soils to concentrated flow erosion: a review [J]. Earth-Science Reviews, 2007,80(1/2):75-109.

郁耀闯,王长燕.黄土丘陵区须根系作物地土壤分离季节变化研究[J].土壤,2016,48(5):1015-1021.

郁耀闯,王长燕.黄土区大豆和马铃薯田土壤临界剪切力季节动态[J].干旱地区农业研究,2018,36(1):50-55.

Peth S, Chenu C, Leblond N, et al. Localization of soil organic matter in soil aggregates using synchrotron-based X-ray microtomography [J]. Soil Biology and Biochemistry, 2014,78:189-194.

李宗超,胡霞.小叶锦鸡儿灌丛化对退化沙质草地土壤孔隙特征的影响[J].土壤学报,2015,52(1):242-248.

周虎,李文昭,张中彬,等.利用X射线CT研究多尺度土壤结构[J].土壤学报,2013,50(6):1226-1230.

周虎,李保国,吕贻忠,等.不同耕作措施下土壤孔隙的多重分形特征[J].土壤学报,2010,47(6):1094-1100.

高宙,胡霞.基于CT扫描研究灌丛根系对土壤大孔隙的影响[J].水土保持研究,2020,27(3):315-319.

祁子寒,王云琦,王玉杰,等.根系对浅表层土大孔隙分布特征及饱和渗透性的影响[J].水土保持学报,2021,35(5):94-100.

徐泽荣,陈世平,徐泽堂,等.百喜草的特性与应用前景[J].草业与畜牧,2014(1):25-33.

Luo Lifang, Lin H, Li Shuangcai. Quantification of 3D soil macropore networks in different soil types and land uses using computed tomography [J]. Journal of Hydrology, 2010, 393(1/2):53-64.

Zhang Zhongbin, Liu Kailou, Zhou Hu, et al. Linking saturated hydraulic conductivity and air permeability to the characteristics of biopores derived from X-ray computed tomography [J]. Journal of Hydrology, 2019,571:1-10.

房昊天,翁白莎,常文娟,等.高寒草甸根系分布特征及与土壤温湿度关系的研究[J].草地学报,2022,30(3):612-621.

Doube M, Klosowski M M, Arganda-Carreras I, et al. BoneJ: free and extensible bone image analysis in ImageJ [J]. Bone, 2010,47(6):1076-1079.

Nearing M A, Bradford J M, Parker S C. Soil detachment by shallow flow at low slopes [J]. Soil Science Society of America Journal, 1991,55(2):339.

刘斌涛,宋春风,史展,等.西南土石山区土壤流失方程坡度因子修正算法研究[J].中国水土保持,2015(8):49-51.

伍冰晨,齐实,郭郑曦,等.西南山区林地空间格局和微地形对坡面地表产流的影响[J].农业工程学报,2021,37(8):108-116.

张光辉.冲刷时间对土壤分离速率定量影响的实验模拟[J].水土保持学报,2002(2):1-4.

Cao Longxi, Zhang Keli, Zhang Wei. Detachment of road surface soil by flowing water [J]. Catena, 2009,76(2):155-162.

Katuwal S, Norgaard T, Møldrup P, et al. Linking air and water transport in intact soils to macro-porosity by combining laboratory measurements and X-ray computed tomography [J]. Geoderma, 2012:9-20.

于师,李珍玉,王梦珂,等.不同种植间距对香根草植物边坡优先流发育特征的影响[J].水土保持通报,2022,42(3):49-56.

王长燕.黄土区直根系作物地土壤分离生长季动态[J].宝鸡文理学院学报(自然科学版),2016,36(3):52-58.

蒋敏,孙博瑞,周少梁,等.不同灌水深度条件下枣树根系空间分布及土壤水分研究[J].北方园艺,2022(6):77-83.

Ghidey F, Alberts E E. Plant root effects on soil erodibility, splash detachment, soil strength, and aggregate stability [J]. Transactions of the Asae, 1997,40(1):129-135.

Nearing M A, Foster G R, Lane L J, et al. A process-based soil erosion model for USDA: water erosion prediction project technology [J]. Transactions of the Asae, 1989,32(5):1587-1593.

Zhang G H, Liu G B, Tang K M, et al. Flow detachment of soils under different land uses in the Loess Plateau of China [J]. Transactions of the Asabe, 2008,51(3):883-890.

Knapen A, Poesen J, De Baets S. Seasonal variations in soil erosion resistance during concentrated flow for a loess-derived soil under two contrasting tillage practices [J]. Soil and Tillage Research, 2007,94(2):425-440.

尚永泽,马波,李占斌,等.黄土丘陵沟壑区不同草灌植被土壤分离速率及其主导因素[J].水土保持通报,2022,42(2):46-52.

张晓艳,周正朝.黄土高原地区草地植被调控土壤水蚀机理的研究进展[J].草业科学,2015,32(1):64-70.

雷俊山,杨勤科,郑粉莉.黄土坡面细沟侵蚀试验研究及土壤抗冲性评价[J].水土保持通报,2004(2):1-4.

Zhang Baojun, Zhang Guanghui, Yang Hanyue, et al. Soil resistance to flowing water erosion of seven typical plant communities on steep gully slopes on the Loess Plateau of China [J]. Catena, 2019,173:375-383.

浏览量

603

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

含盐铁尾矿砂在机械沙障中的固化性能

2000—2024年黄河源园区生态环境质量变化及其驱动因素

不同雨强和坡度下新安江流域典型土壤坡面的产流产沙特征

数字经济对长江经济带农业生态产品价值转化效率的影响

基于kNDVI与结构方程模型的洞庭湖区植被覆盖时空变化及驱动机制分析