LI Hongbin,ZHANG Xu,YAO Chen,et al.Study on Root Tensile Mechanical Properties of Six Typical Plants in the Loess Area of Northern Shaanxi[J].Research of Soil and Water Conservation,2023,30(04):122-129.[doi:10.13869/j.cnki.rswc.2023.04.042.]
陕北黄土区不同植物根系抗拉力学特性研究
- Title:
- Study on Root Tensile Mechanical Properties of Six Typical Plants in the Loess Area of Northern Shaanxi
- 文章编号:
- 1005-3409(2023)04-0122-08
- Keywords:
- loess area; tensile strength; mechanical properties; tensile test; single root
- 分类号:
- S157.1
- 文献标志码:
- A
- 摘要:
- [目的]单根抗拉力学特性是植物发挥固土护坡作用的重要因素,乡土植物分布广泛对区域固土护坡起主要作用,研究比较不同植物单根抗拉力学特性,对坡陡沟深、滑塌频发的黄土区护坡植物选择具有重要意义。[方法]以陕北黄土区的截叶铁扫帚、猪毛蒿、大针茅、铁杆蒿、茭蒿和细叶薹草6种常见乡土植物为研究对象,通过室内单根拉伸试验,比较分析了以上6种植物不同根径单根抗拉力、单根抗拉强度和单根延伸率等力学特性。[结果](1)在根径范围内,6种植物单根抗拉力与根径呈幂函数形(y=axb,b>0)正相关关系,植物单根抗拉强度与根径呈幂函数形(y=axb,b<0)负相关关系; 6种植物单根延伸率随着根径的增加呈现出增大趋势,但单根延伸率与根径之间未呈现出显著的相关性。(2)在试验根径0.05～0.60 mm范围内,植物种类对单根抗拉力、单根抗拉强度和单根延伸率的影响都达到显著水平,6种植物平均单根抗拉力关系为:细叶薹草(10.20 N)>大针茅(7.39 N)>铁杆蒿(6.87 N)>茭蒿(6.44 N)>猪毛蒿(6.34 N)>截叶铁扫帚(3.37 N); 平均抗拉强度关系为:茭蒿(148.44 MPa)>铁杆蒿(141.96 MPa)>大针茅(132.95 MPa)>细叶薹草(132.68 MPa)>猪毛蒿(115.07 MPa)>截叶铁扫帚(85.86 MPa); 平均单根延伸率关系为:细叶薹草(32.37%)>猪毛蒿(17.01%)>大针茅(13.60%)>铁杆蒿(13.15%)>茭蒿(13.09%)>截叶铁扫帚(6.98%)。[结论]细叶薹草根系的单根抗拉力学性能优于其他植物,本研究结果可为陕北黄土区水土保持研究提供一定的科学依据。
- Abstract:
- [Objective] The tensile mechanical properties of a single root are the important factors for plants to play the role in soil consolidating and slope protection, the wide distribution of native plants plays a major role in regional soil consolidating and slope protection. It is of great significance to study and compare the tensile mechanical properties of different plant root systems for the selection of slope protection plants in loess areas with steep slopes, deep grooves and frequent landslides. [Methods] The six native plants(Lespedeza cuneata, Artemisia scoparia, Stipa grandis, Artemisia sacrorum, Artemisia giraldii and Carex duriuscula subsp. stenophylloides)in the loess region of northern Shaanxi were selected as the study samples. Through indoor single root tensile test, the mechanical properties of single root tensile force, single root tensile strength and single root extensile rate of the above six plants with different root diameters were compared and analyzed. [Results](1)Within the root diameter range, with the increase of root diameter, the single root tensile forces and single root tensile strengths of 6 plant species followed the increase pattern of a power function e(y=axb,b>0)and the decrease pattern of a power function, respectively(y=axb,b<0); moreover, the single root limit extensile rates of the 6 plant species increased with the increasing of the root diameter, but there was no significant correlation relationship between them.(2)In the range of 0.05～0.60 mm of root diameter, the influences of plant species on single root tensile force, single root tensile strength and single root extensile rate reached the significant level, and the average tensile forces of the six species decreased in the order: Carex duriuscula subsp. Stenophylloides (10.20 N)>Stipa grandis (7.39 N)>Artemisia sacrorum (6.87 N)>Artemisia giraldii (6.44 N)>Artemisia scoparia (6.34 N)>Lespedeza cuneata (3.37 N); the average tensile strength ranked as Artemisia giraldii (148.44 MPa)>Artemisia sacrorum (141.96 MPa)>Stipa grandis (132.95 MPa)>Carex duriuscula subsp. Stenophylloides (132.68 MPa)>Artemisia scoparia (115.07 MPa)>Lespedeza cuneata (85.86 MPa); the single root extensile rate was in order as Carex duriuscula subsp. Stenophylloides (32.37%)>Artemisia scoparia (17.01%)>Stipa grandis (13.60%)>Artemisia sacrorum (13.15%)>Artemisia giraldii(13.09%)>Lespedeza cuneata (6.98%). [Conclusion] The tensile mechanical properties of the single root of Carex duriuscula subsp. Stenophylloides are better than those of other plants. The results of this study can provide a certain scientific basis for the study of soil and water conservation in the loess area of northern Shaanxi.
参考文献/References:
[1] 山仑.从水土保持到水土资源高效利用[J].中国水利,2000(8):57.
[2] 李永红,高照良.黄土高原地区水土流失的特点、危害及治理[J].生态经济,2011(8):148-153.
[3] 穆兴民,徐学选,陈国良.黄土高原降雨量的地理地带性研究[J].水土保持通报,1992,12(4):27-32.
[4] 彭建兵,王启耀,庄建琦,等.黄土高原滑坡灾害形成动力学机制[J].地质力学报,2020,26(5):714-730.
[5] Zhou J X, Zhu C Y, Zheng J M, et al. Landslide disaster in the loess area of China[J]. Journal of Forestry Research, 2002,13(2):157-161.
[6] 高德彬.公路黄土路堑高边坡稳定性研究[D].西安:长安大学,2008.
[7] 梁亚红.黄土山区公路滑坡稳定性分析与防治研究[J].建材与装饰,2020(12):238-239.
[8] 潘天辉,杜峰,王月.陕北黄土区护坡植物根系分布和抗剪增强分析[J].水土保持研究,2020,27(3):357-363,371.
[9] 周跃.植被与侵蚀控制:坡面生态工程基本原理探索[J].应用生态学报,2000,11(2):297-300.
[10] 苏雪萌,刘俊娥,周正朝,等.黄土丘陵区不同植物根系抗拉力学特性[J].水土保持研究,2019,26(3):259-264.
[11] 张兴玲,胡夏嵩,毛小青,等.植物根系固土护坡力学机理研究现状与进展[J].人民黄河,2009,31(6):88-90,92.
[12] 余芹芹,乔娜,胡夏嵩,等.植物根-土复合体固坡力学效应及模型研究现状与进展[J].中国水土保持,2011(7):51-54,69.
[13] 曹波,曹志东,王黎明,等.植物根系固土作用研究进展[J].水土保持应用技术,2009(1):26-28.
[14] 郑力文,刘小光,余新晓,等.油松根系直径对根—土界面摩擦性能的影响[J].北京林业大学学报,2014,36(3):90-94.
[15] 刘子壮,高照良,杜峰,等.黄土高原高速公路护坡植物根系分布及力学特性研究[J].水土保持学报,2014,28(4):66-71.
[16] 栗岳洲,付江涛,余冬梅,等.寒旱环境盐生植物根系固土护坡力学效应及其最优含根量探讨[J].岩石力学与工程学报,2015,34(7):1370-1383.
[17] 童冉,陈庆标,周本智,等.毛竹和雷竹地下系统结构及生物力学性质[J].生态学报,2020,40(7):2242-2251.
[18] 刘艳琦.5种植物两个生长时期根系生物力学特性的研究[D].呼和浩特:内蒙古农业大学,2018.
[19] 李宁,陈丽华,杨苑君.油松、华北落叶松根系抗拉特性的影响因素[J].北京林业大学学报,2015,37(12):77-84.
[20] 杨路,杜峰,秦晶晶,等.黄土区3种优势灌木根土复合体的抗剪强度研究[J].水土保持研究,2022,29(1):295-300,310.
[21] 徐文秀,杨玲,鲍玉海,等.大型水库消落带2种典型耐淹草本植物单根抗拉力学特性[J].水土保持研究,2020,27(5):259-264,272.
[22] 刘亚斌,李淑霞,余冬梅,等.西宁盆地黄土区典型草本植物单根抗拉力学特性试验[J].农业工程学报,2018,34(15):157-166.
[23] 王月,杜峰,周敏,等.陕北林草混交根土复合体抗剪强度研究[J].水土保持研究,2018,25(2):213-219.
[24] 刘国彬,蒋定生,朱显谟.黄土区草地根系生物力学特性研究[J].土壤侵蚀与水土保持学报,1996,2(3):21-28.
[25] 张玉,朱海丽,张珂,等.3种滨河植物单根抗拉特性与其微观结构关系[J].干旱区研究,2022,39(2):572-583.
[26] 张乔艳,唐丽霞,廖华刚,等.多花木蓝根截面微观结构对其抗拉特性的影响[J].植物生态学报,2019,43(8):709-717.
[27] 张乔艳,唐丽霞,潘露,等.基于根系化学组成的抗拉力学特性分析[J].南京林业大学学报:自然科学版,2020,44(1):186-192.
[28] Hathaway R L, Penny D. Root strength in some Populus and Salix Clones[J]. New Zealand Journal of Botany, 1975,13:333-344.
[29] 韩立亮,宋桂龙.护坡木本植物根系的力学特性及其与细胞壁成分的关系[J].北京林业大学学报,2015,37(11):120-127.
[30] 赵丽兵,张宝贵.紫花苜蓿和马唐根的生物力学性能及相关因素的试验研究[J].农业工程学报,2007,23(9):7-12.
[31] 李长暄.林木单根力学性能及其影响因素研究[D].北京:北京林业大学,2014.
[32] 张超波.林木根系固土护坡力学基础研究[D].北京:北京林业大学,2011.
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备注/Memo
收稿日期:2022-06-24 修回日期:2022-07-14
资助项目:国家自然科学基金(42177458,41771322); 国家重点研发计划项目(2017YFC0504504)
第一作者:李宏斌(1992—),男,河南南阳人,在读硕士研究生,主要从事水土保持与荒漠化防治研究。E-mail:1832929992@qq.com
通信作者:杜峰(1971—),男,内蒙古乌兰察布人,博士,副研究员,主要从事水土保持和群落生态的研究。E-mail:dufeng@ms.iswc.ac.cn