基于细根解剖特征的树种耐旱性解析

doi:10.16843/j.sswc.2018.03.004

Abstract
Figure/Table
References (0)
Related Citation (1)

Download: PDF (942 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract [Background] The selection of tree species is critical for the soil and water conservation and vegetation restoration in arid-barren mountainous areas. There are 40% areas in Shandong province belonging to mountain area, where water is one of important environment factors limiting vegetation restoration. Thus, it is very important to choose tree species with developed roots. The examination on the anatomical characteristics of tree roots would be helpful for the tree species selection.[Methods] The study site is located in Xueye county of Laiwu city, belonging to typical arid-barren mountainous areas of Shandong province. After afforestation, ten common tree species were selected and all the roots of trees for each species were sampled. According to the branching orders, the roots were grouped into five classes, and root traits (i.e., the root diameter, cortex thickness, stele diameter, ratio of vascular cylinder to root diameter, vessel diameter, and vessel density) were examined by paraffin sectioning, Nikon Eclipse E200 microscopy and Scope Image 9.0 software. The differences of root anatomical traits among tree species were analyzed and clustered by One-way ANOVA and SPSS 19.0 with Excel.[Results] The fine root diameter of tree species increased with the root order. The first order roots showed larger diameter in conifer trees than in those deciduous trees. The diameters of deciduous shrub roots were smaller than those arbor and vines; however, the difference among species was not significant (P<0.05).The stele diameters of fine roots demonstrated similar changes with the average diameter of fine roots. The cortex thickness of the first and second order roots in the deciduous trees was large. However, the root vessel diameter of all the tree species increased with the increase of root order, the vessel diameters in vines roots (i.e., Lonicera japonica and Euonymus fortunei) were smaller than those in arbors and shrubs roots. The vessel diameters in deciduous trees were larger than those of other tree species. The changes of vessel density were opposite to that of root diameter. Based on the anatomical characteristics of fine roots, the 10 species were clustered into three categories, the first one was the thin cortex and compacted transport tissue, including L. japonica, Lespedeza bicolor, Vitex negundo var. heterophylla, Amorpha fruticosa and Pinus thunbergii; the second one was the thin cortex and loose transport tissue, including E. fortunei, Cotinus coggygria, Robinia pseudoacacia and Platycladus orientalis; the third one was the thick cortex and loose transport tissue, including Gleditsia sinensis.[Conclusions] The anatomical structure of tree root in arid habitat is related to its life type, which is the ecological adaptability in the process of long-term tree species evolution. Root's anatomical structure is a key index to explore the survival strategy of tree species in drought stress environment.

Key words： fine root order anatomical traits drought resistance arid-barren mountain species selection

Received: 04 September 2017

PACS:

S718.5

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LIU Mengling
	ZHU Qiliang
	LI Jiamei
	ZHANG Guangcan
	WANG Yanping

Cite this article:

LIU Mengling,ZHU Qiliang,LI Jiamei, et al. The arid-tolerance of trees based on the anatomical characteristics of fine roots[J]. SSWC, 2018, 16(3): 26-33.

URL:

http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2018.03.004 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2018/V16/I3/26

[1]	GORDON W S, JACKSON R B. Nutrient concentrations in fine roots[J]. Ecology, 2000, 81:275.
[2]	李金航, 齐秀慧, 徐程扬, 等. 华北4产地黄栌幼苗根系形态对干旱胁迫的短期响应[J]. 北京林业大学学报,2014, 36(1):48. LI Jinhang, QI Xiuhui, XU Chengyang, et al. Short-term responses of root morphology to drought stress of Cotinus coggygria seedlings from four varied locations in northern China[J]. Journal of Beijing Forestry University, 2014, 36(1):48.
[3]	MARINE Z, CATHERINE P C, ANNETTE M B, et al. What functional strategies drive drought survival and recovery of perennial species from upland grassland[J]. Annals of Botany. 2015,116:1001.
[4]	MACFALL J S, JOHNSON G A, KRAMER P J. Comparative water uptake by roots of different ages in seedlings of loblolly pine (Pinus taeda L.)[J]. New Phytologist, 2010, 119(4):551.
[5]	李正理, 李荣敖. 我国甘肃九种旱生植物同化枝的解剖观察[J]. 植物学报, 1981, 23(3):181. LI Zhengli, LI Rongao. Anatomical observation of assimilating branches of nine xerophytes in Gansu[J]. Acta Botanica Sinica, 1981, 23(3):181.
[6]	PREGITZER K S, KUBISKE M E, YU C K. Relationships among root branch order, carbon, and nitrogen in four temperate species[J]. Oecologia, 1997, 111:302.
[7]	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.
[8]	FITTER A H. Functional significance of root morphology and root system architecture[J]. Special publication. of the British Ecological Society, 1985:87.
[9]	HISHI T. Heterogeneity of individual roots within the fine root architecture:Causal links between physiological and ecosystem functions[J]. Journal of Forest Research, 2007, 12(2):126.
[10]	GUO D L, XIA M X, WEI X, et al. Anatomical traits associated with absorption and mycorrhizal colonization are linked to root branch order in twenty-three Chinese temperate tree species[J]. New Phytologist, 2008, 180(3):673.
[11]	HUANG G, ZHAO X Y, ZHAO H L, et al. Linking root morphology, longevity and function to root branch order:A case study in three shrubs[J]. Plant & Soil, 2010, 336(1/2):197.
[12]	王月海, 房用, 隋日光, 等. 山东石灰岩山地荒山植被恢复技术的研究[J]. 水土保持研究, 2006, 13(4):239. WANG Yuehai, FANG Yong, SUI Riguang, et al. Studies on the technology of vegetation restoration in barren hill of limestone mountainous region of Shandong[J]. Research of Soil and Water Conservation, 2006, 13(4):239.
[13]	王惠, 房用, 王仁卿, 等. 山东省济南市石灰岩山地植物群落演替特征[J]. 东北林业大学学报, 2009, 37(5):54. WANG Hui,FANG Yong,WANG Renqing, et al. Succession characteristics of plant community in limestone mountainous region of Jinan in Shandong province[J]. Journal of Northeast Forestry University, 2009, 37(5):54.
[14]	FAHEY T J, ARTHUR M A. Further studies of root decomposition following harvest of a northern hardwood forest[J]. Forest Science, 1994, 40(4):618.
[15]	宋凤斌, 刘胜群. 不同耐旱性玉米根系解剖结构比较研究[J]. 吉林农业大学学报, 2008, 30(4):337. SONG Fengbin, LIU Shengqun. The comparative study on root anatomical structure of maize genotypes different in tolerance to drought[J]. Journal of Jilin Agricultural University, 2008, 30(4):337.
[16]	卫星, 刘颖, 陈海波. 黄波罗不同根序的解剖结构及其功能异质性[J]. 植物生态学报, 2008, 32(6):1238. WEI Xing, LIU Ying, CHEN Haibo. Anatomical and functional heterogeneity among different root orders of Phellodendron amurense[J]. Journal of Plant Ecology, 2008, 32(6):1238.
[17]	许坛, 王华田, 朱婉芮, 等. 连作杨树细根根序形态及解剖结构[J]. 林业科学, 2015, 51(1):119. XU Tan, WANG Huatian, ZHU Wanrui, et al. Morphological and anatomical traits of poplar fine roots in successive rotation plantations[J]. Scientia Silvae Sinicae, 2015, 51(1):119.
[18]	许维宏, 吴宁, 吴福忠.干旱条件下植物生长适应策略研究进展[J]. 世界科技研究与发展, 2010, 32(2):176. XU Weihong,WU Ning, WU Fuzhong. Progress of plant adaptive strategies to the drought environment[J]. World Science and Technology Research and Development, 2010, 32(2):176.
[19]	李莹, 曾晓琳, 游明鸿, 等. 5种川西北沙化地草本植物生态适应策略的差异性[J]. 草业科学, 2016, 33(5):843. LI Ying, ZENG Xiaolin, YOU Minghong, et al. Differences of ecological adaptation strategies of 5 herbs from the desertified grassland in the northwest Sichuan[J]. Pratacultural Science, 2016, 33(5):843.
[20]	许景伟, 李传荣, 马履一, 等. 沿海防护林造林树种抗旱性的比较[J]. 北京林业大学学报, 2007, 29(1):166. XU Jingwei, LI Chuanrong, MA Lüyi, et al. Comparison in drought resistance of tree species in coastal protective forests[J]. Journal of Beijing Forestry University, 2007, 29(1):166.
[21]	李吉跃. 太行山区主要造林树种耐旱特性的研究(Ⅴ):耐旱生产力[J]. 北京林业大学学报, 1991,13(增刊3):251. LI Jiyue. Studies on drought tolerance of some main tree species used in afforestation in Taihang Mountain region(V):Productivity at drought toleranee[J]. Journal of Beijing Forestry University, 1991, 13(s3):251.
[22]	TYREE M T, ZIMMERMANN M H. Xylem structure and the ascent of sap[J]. Quarterly Review of Biology, 2002, 222(4623):500.
[23]	蔡鲁, 朱婉芮, 王华田, 等. 鲁中南山地6个造林树种根系形态的比较[J]. 中国水土保持科学, 2015, 13(2):83. CAI Lu, ZHU Wanrui, WANG Huatian, et al. Root morphology of six tree species in mountain area of middle south Shandong[J]. Science of Soil and Water Conservation, 2015, 13(2):83.
[24]	郭连生, 田有亮. 9种针阔叶幼树的蒸腾速率、叶水势与环境因子关系的研究[J]. 生态学报, 1992, 12(1):47. GUO Liansheng, TIAN Youliang. Transpiration rate of coniferous and broadleaf young trees as a function of water potential of their leaves and of environmental factors[J]. Acta Ecologica Sinica, 1992, 12(1):47.