全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
冰川冻土  2012 

青藏铁路沱沱河取土场草本植物固土力学强度与化学元素含量特征

, PP. 1190-1199

Keywords: 寒旱环境,沱沱河,取土场,草本植物,根系固土强度,化学元素

Full-Text   Cite this paper   Add to My Lib

Abstract:

以青藏铁路沱沱河取土场草本植物种植区为例,在野外和室内分别对生长期为5a的6种草本做了原位拉拔试验、室内拉伸试验和剪切试验,分别得到了试验区梭罗草、碱茅、冷地早熟禾、赖草、垂穗披碱草、星星草等6种草本根系抗拔力为187.34~57.89N、抗拉力为4.44~2.99N,抗剪力为4.33~3.85N.同时,对取土场试验区6种草本地上茎叶、地下根系15种化学元素进行了分析.结果表明,地上茎叶和地下根系主要含有Al、Ca、Mg、K、Fe、Sr、Zn、Mn等8种元素,其中Al、Ca、Mg、K等4种元素较其余元素含量显著;此外,6种草本其根系所含Ca、Fe、Zn、Sr、Ni、Cu等6种元素含量均显著大于相应草本种的茎叶部分.试验区6种草本抗拔力由大至小依次为梭罗草、赖草、冷地早熟禾、垂穗披碱草、碱茅、星星草,6种草本其根系所含的其中前8种主要化学元素依次为Al、Ca、Mg、K、Fe、Zn、Mn、Sr等元素,这说明了取土场试验区6种草本根系固土力学强度与根系所含化学元素具有一定的关系.

References

[1]  Chen Guichen, Zhou Guoying, Sun Jing, et al. Application of Kengyilia thoroldiana to vegetation restoration in gravel-soil-taken field along the Qinghai-Tibet railway[J]. Journal of Glaciology and Geocryology, 2006, 28(4): 506-511. [陈桂琛, 周国英, 孙菁, 等. 梭罗草在青藏铁路取土场植被恢复中的应用研究[J]. 冰川冻土, 2006, 28(4): 506-511.]
[2]  Chen Guichen, Zhou Guoying, Song Jing, et al. Test study on the application of Elymus nutans to the vegetation restoration in the gravel-soil-taken field along Qinghai-Tibet Railway[J]. China Railway Science, 2008, 29(5): 134-137. [陈桂琛, 周国英, 孙菁, 等. 采用垂穗披碱草恢复青藏铁路取土场植被的试验研究[J]. 中国铁道科学, 2008, 29(5): 134-137.]
[3]  Zhao Yonghua, Du Erji, Liu Guangyue, et al. Study of soil methane production rate from marsh meadow in permafrost regions on Tibetan Plateau[J]. Journal of Glaciology and Geocryology, 2011, 33(5): 999-1005. [赵拥华, 杜二计, 刘广岳, 等. 青藏高原多年冻土区沼泽草甸土壤CH4产生速率研究[J]. 冰川冻土, 2011, 33(5): 999-1005.]
[4]  Shi Yunjing, Ma Wei. A probability analysis for forecasting the thaw depth in Tuotuohe, Tibetan Plateau[J]. Journal of Glaciology and Geocryology, 2011, 33(1): 126-131. [石云静, 马巍. 青藏高原沱沱河地区冻土融化深度预测的概率分析[J]. 冰川冻土, 2011, 33(1): 126-131.]
[5]  Feng Wenjie, Sun Zhizhong, Li Guoyu, et al. Radiation effect of shading board on embankment side slope on Tibetan Plateau[J]. Journal of Glaciology and Geocryology, 2011, 33(4): 778-783. [冯文杰, 孙志忠, 李国玉, 等. 青藏高原路堤边坡遮阳措施辐射影响分析[J]. 冰川冻土, 2011, 33(4): 778-783.]
[6]  Wang Kejun, Lee C F. Brief mechanical analysis of bioengineering techniques for slope protection[J]. Chinese Journal of Rack Mechanics and Engineering, 1998, 17(6): 687-691. [王可钧, 李焯芬. 植物固坡的力学简析[J]. 岩石力学与工程学报, 1998, 17(6): 687-691.]
[7]  Operstein V, Frydman S. The influence of vegetation on soil strength[J]. Ground Improvement, 2000(4): 81-89.
[8]  Zhou Yue, Chen Xiaoping, Li Yuhui, et al. Preliminary study of tractive effect of lateral roots of Pinus yunnanensis on shallow soil mass[J]. Acta Phytoecologica Sinica, 1999, 23(5): 458-465. [周跃, 陈晓平, 李玉辉, 等. 云南松侧根对浅层土体的水平牵引效应的初步研究[J]. 植物生态学报, 1999, 23(5): 458-465.]
[9]  Zhu Haili, Hu Xiasong, Mao Xiaoqing, et al. Relationship between mechanical characteristics and anatomical structures of slope protection plant root[J]. Transactions of the CSAE, 2009, 25(5): 40-46. [朱海丽, 胡夏嵩, 毛小青, 等. 护坡植物根系力学特性与其解剖结构关系[J]. 农业工程学报, 2009, 25(5): 40-46.]
[10]  Yang Yongbing, Shi Bing. The method of vegetation for slope protection in slope treatment[J]. Shanghai Geology, 2001(4): 41-44.
[11]  Pang Qiangqiang, Zhao Lin, Li Shuxun. Influences of local factors on ground temperatures in permafrost regions along the Qinghai-Tibet Highway [J]. Journal of Glaciology and Geocryology, 2011, 33(2): 349-356. [庞强强, 赵林, 李述训. 局地因素对青藏公路沿线多年冻土区地温影响分析[J]. 冰川冻土, 2011, 33(2): 349-356.]
[12]  Xiao Dongsheng. Theory of improving slope strength by vegetation[J].Basis of Foundation, 2004, 24(1): 63-65. [肖东升. 护坡增加边坡抗剪强度的量化理论[J]. 地基基础, 2004, 24(1): 63-65.]
[13]  Genet M, Stokes A, Salin F, et al. The influence of cellulose content on tensile strength in tree roots[J]. Plant and Soil, 2005, 278: 1-9.
[14]  Cheng Hong, Yan Chuansheng, Li Jianqing, et al. An experimental study on mechanical performance and mechanism of soil-reinforcement by herb root system[J].Research of Soil and Water Conservation, 2006, 13(1): 62-65. [程洪, 颜传盛, 李建庆, 等. 草本植物根系网的固土机制模式与力学试验研究[J]. 水土保持研究, 2006, 13(1): 62-65.]
[15]  Wu Tien H, Watson Alex. In situ shear tests of soil blocks with roots[J]. Can. Geotech. J., 1998, 35: 579-590.
[16]  Nilaweera N S, Nutalaya P. Role of tree roots in slope stabilization[J]. Bull Eng Geol Env, 1999, 57: 337-342.
[17]  Yang Yachuan, Mo Yongjing, Wang Zhifang, et al. Experimental study on anti-water erosion and shear strength of soil-root composite [J]. Journal of China Agricultural University, 1996, 1(2): 31-38. [杨亚川, 莫永京, 王芝芳, 等. 土壤-草本植被根系复合体抗水蚀强度与抗剪强度的试验研究[J].中国农业大学学报, 1996, 1(2): 31-38.]
[18]  Zhao Libing, Zhang Baogui. Experimental study on root bio-mechanics and relevant factors of Medicago sativa and Digitaria sanguinalis[J]. Transactions of the Chinese Society of Agricultural Engineering, 2007, 23(9): 7-12. [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.]
[19]  Liu Guobin, Jiang Shusheng, Zhu Xianmo. Study on grasses root biomechanics in Loess Plateau[J]. Journal of Soil and Water Conservation, 1996, 2(3): 21-28. [刘国彬, 蒋定生, 朱显谟. 黄土区草地根系生物力学研究[J]. 土壤侵蚀与水土保持学报, 1996, 2(3): 21-28.]
[20]  Zhu Qingke, Chen Lihua, Zhang Dongsheng, et al. Mechanical of soil-reinforcement by roots in forest ecological systems in Gongga Mountain[J]. Journal of Beijing Forestry University, 2002, 24(2): 64-67. [朱清科, 陈丽华, 张东升, 等. 贡嘎山森林生态系统根系固土力学机制研究[J]. 北京林业大学学报, 2002, 24(4): 64-67.]
[21]  Zhu Haili, Hu Xiasong, Mao Xiaoqing, et al. Study on mechanical characteristics of shrub roots for slope protection in loess area of Qinghai-Tibetan Plateau[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(supp.2): 3445-3452. [朱海丽, 胡夏嵩, 毛小青, 等. 青藏高原黄土区护坡灌木植物根系力学特性研究[J].岩石力学与工程学报, 2008, 27(增2): 3445-3452.]
[22]  Waldron L J, Akessin S D. Soil reinforcement by roots: Calculation of increased soil shear resistance from root properties[J]. Soil Science, 1981, 132(6): 427-435.
[23]  Liu Zhifei, Wang Chengshan, Jin Wei, et al. Oligo-Miocene depositional environment of the Tuotuohe basin, Central Tibetan Plateau[J]. Acta Sedimentologica Sinica, 2005, 23(2): 210-217. [刘志飞, 王成善, 金玮. 青藏高原沱沱河盆地渐新-中新世沉积环境分析[J]. 沉积学报, 2005, 23(2): 210-217.]
[24]  Li Guorong, Hu Xiasong, Mao Xiaoqing, et al. A study of the mechanical effects of shrub roots for slope protection in frigid and arid-semiarid loess area[J]. Hydrogeology and Engineering Geology, 2008, 35(1): 94-97. [李国荣, 胡夏嵩, 毛小青, 等. 寒旱环境黄土区灌木根系护坡力学效应研究[J]. 水文地质工程地质, 2008, 35(1): 94-97.]
[25]  Li Tiancai, Chen Guichen, Cao Guangmin, et al. Characteristics of mineral elements K, Ca, Mg in degraded grassland and enclosure grassland on the north bank of Qinghai Lake[J]. Acta Agrestia Sinica, 2011, 19(5): 752-759. [李天才, 陈桂琛, 曹广民, 等. 青海湖北岸退化草地和封育草地中钾、 钙、 镁等矿质常量元素特征[J]. 草地学报, 2011, 19(5): 752-759.]
[26]  Liu Guobin, Jiang Dingsheng, Zhu Xianmo. Study on grasses root bio-mechanics in Loess Plateau[J]. Journal of Soil Erosion and Soil Water Conservation, 1996, 2(3): 21-28. [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.]
[27]  Wang Jian, Zhu Jinmao, Ling Qingqing, et al. Impacts of structure and cell wall of wheat stem on its compressive strength[J]. Chinese Bulletin of Science, 2006, 51(6): 679-685. [王健, 朱锦懋, 林青青, 等. 小麦茎秆结构和细胞壁化学成分对抗压强度的影响[J]. 科学通报, 2006, 51(6): 679-685.]
[28]  Wang Zhong. Plant Physiology[M]. Beijing: China Agriculture Press, 2000.
[29]  Mo Dalun, Wu Jianxue. A study on the characteristics of the chemical composition and the inter-elationship between the elements in the plants of 86 species in Hannan Island[J]. Journal of Plant Ecology, 1988(1): 51-62.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133