Vertical root distribution characteristics of Amorpha fruticosa on southern Mu Us Sandy Land

doi:10.11686/cyxb20140215

Abstract

Abstract: 60-year, 35-year, 28-year and 6-year old Amorpha fruticosa growing on southern Mu Us Sandy Land were sampled using the total strain mining method. Aboveground morphological characteristics, soil moisture, root biomass, specific root length, root fraction, root volume, root surface area and root length density were studied to reveal the ecological adaptability of A. fruticosa in a sandy habitat. Results indicated that with increasing soil depth, the root biomass, root volume and root surface area of A. fruticosa of all ages declined exponentially in the form Y=ae^-bx. Root extinction coefficient analysis showed that roots were concentrated close to the soil surface. Parameters of root distribution showed different degrees of correlation: Soil moisture was significantly correlated with above ground biomass, root biomass, and specific root length. Soil moisture was also positively related to root surface area. The root distribution parameters, moisture control factor and framework factor, were confirmed by principal component analysis. With increasing years, A. fruticosa did not show an aging phenomenon since its roots had the ability to self-thin and update constantly, adapting to the changes in the environment.

CLC Number:

DU Ming-xin, ZHOU Xiang-rui, ZHOU Zhi-yu, LU Xin, LIANG Kun-lun, ZHOU Yuan-yuan, TAO Xiao-hui. Vertical root distribution characteristics of Amorpha fruticosa on southern Mu Us Sandy Land[J]. Acta Prataculturae Sinica, 2014, 23(2): 125-132.

References

[1] 周心澄. 紫穗槐的固沙效益[J]. 中国沙漠, 1985, 5(1): 46-51.
[2] 梁坤伦, 姜文清, 周志宇, 等. 青藏高原紫穗槐主要形态特征变异分析[J]. 生态学报, 2012, 32(1): 311-318.
[3] 邹丽娜, 周志宇, 颜淑云, 等. 盐分胁迫对紫穗槐幼苗生理生化特性的影响[J]. 草业学报, 2011, 20(3): 84-90.
[4] 刘畅, 姜泓, 张建逵, 等. GC-MS法测定紫穗槐果实挥发油中的化学成分[J]. 中华中医药学刊, 2008, 26(1): 213-214.
[5] 周艳松, 王立群, 张鹏, 等. 大针茅根系构型对草地退化的响应[J]. 草业科学, 2011, 28(11): 1962-1966.
[6] 余爱, 杨帆, 张宇, 等. 不同施磷浓度对柱花草和黑籽雀稗根系分布的影响[J]. 草业学报, 2011, 20(3): 219-224.
[7] 王学臣, 任海云, 娄成后, 等. 干旱胁迫下植物根与地上部间的信号传递[J]. 植物生理学报, 1992,(6): 397-402.
[8] 任伟, 周志宇, 詹媛媛, 等. 阿拉善荒漠灌木根际中、微量元素含量特征[J]. 生态学报, 2009, 29(7): 3759-3767.
[9] 黄建辉, 韩兴国, 陈灵芝, 等. 森林生态系统根系生物量研究进展[J]. 生态学报, 1999, 19(2): 269-277.
[10] 胡建忠, 郑佳丽, 沈晶玉, 等. 退耕地人工植物群落根系生态位及其分布特征[J]. 生态学报, 2005, 25(3): 481-489.
[11] 单立山, 张希明, 花永辉, 等. 塔克拉玛干沙漠腹地梭梭幼苗根系分布特征对不同灌溉量的响应[J]. 植物生态学报, 2007, 31(5): 769-776.
[12] Gale M R, Gragal D E. Vertical root distribution of northern tree species in relation to successional status[J]. Plant Ecology, 1987, 17: 829-834.
[13] 黄刚. 科尔沁沙地几种草本植物和灌木根系形态与分布规律[D]. 兰州: 中国科学院寒区旱区环境与工程研究所, 2006.
[14] Dube O P, Pickup G. Effects of rainfall variability and communal and semi-commercial grazing on land cover in southern African range lands[J]. Applied Soil Ecology, 2001, 17(2): 195-208.
[15] Pregitzer K S, Deforest J L, Burton A J, et al. Fine root architecture of nine North American trees[J]. Ecological Monographs, 2002, 72(2): 293-309.
[16] 胡宗培, 邱玉舫. 适宜盐碱地、干旱和半旱地区种植的优良灌木树种四翅滨藜[J]. 中国水土保持, 2004, (6): 40.
[17] Keyes M R, Grier C C. Above and below-ground net production in 40 -year-old Douglas-fir stands on low and high productivity sites[J]. Canadian Journal of Chemistry, 1981, 11: 599-605.
[18] Mckay H M, Malcolm D C. A comparison of the fine root component of a pure and mixed Coniferous stand[J]. Canadian Journal of Forestry Research, 1988, 18: 1416-1426.
[19] 周梦华, 程积民孙, 万惠娥, 等. 云雾山本氏针茅群落根系分布特征[J]. 草地学报, 2008, 16(3): 267-271.
[20] Wilson J B. A review of evidence on the control of shoot: root ratio in relation to model[J]. Annals of Botany, 1988, 61: 433-449.
[21] Jackson R B, Canadell J R, Mooney H A. A global analysis of root distribution for terrestrial biomass[J]. Oecologla, 1996, 108(3): 389-411.
[22] Burton A J, Pregitzer K S, Headrick R L. Relationships between fine root dynamics and nitrogen availability in Michigan northern hardwood forests[J]. Oecologia, 2000, 125(3): 389-399.
[23] 王文全, 王世绩, 刘雅荣, 等. 粉煤灰复田立地上杨、柳、榆、刺槐根系的分布和生长特点[J]. 林业科学, 1994, 30(1): 25-33.
[24] Casper B B, Jackson R B. Plant competition underground[J]. Annual Review of Ecology and Systematic, 1997, 28: 545-570.
[25] Schenk H J, Jackson R B. The global biogeography of roots[J]. Ecological monographs, 2002, 72: 311-328.
[26] Coile T S. Distribution of forest tree roots in North Carolina Piedmont soils[J]. Journal of Forestry, 1936, 35: 247-257.
[27] Lawlor D W. Carbon and nitrogen assimilation in relation to yield: mechanisms are the key to understanding production systems[J]. ExpBot, 2002, 53: 773-787.
[28] Mamo M, Bubenzene G D. Detachment rate, soil erodibility, and soil strength as influenced by living plant roots[J]. Field Study, Transactions of the ASAE, 2001, 44: 1175-1181.
[29] 冯燕, 王彦荣, 胡小文. 水分胁迫对两种荒漠灌木幼苗生长与水分利用效率的影响[J]. 草业学报, 2011, 20(4): 293-298.