喀斯特区3种灌木根系构型及其生态适应策略

doi:10.16843/j.sswc.2019.01.012

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Abstract [Background] Ecological environment in the karst area is very fragile and the soil erosion is serious.Plant roots play an important role in controlling shallow landslides, consolidating soils, and preventing soil erosion.Root architecture is one of the important factors affecting the function of soil fixation. Therefore, studying the unique root architecture of shrubs in this area is of great significance for evaluating the soil and water conservation effects of plant roots.[Methods] In this study,the whole plant root system was excavated by stepwise mining, and the diameter, height, crown width, root diameter, root length and root angle were measured. The topological index, root connection length and root branching rate of three shrub roots in Karst area of central Guizhou were analyzed, and the horizontal distribution characteristics and root bending characteristics of roots were discussed.[Results] 1)The three shrubs adopt similar adaptive strategies to the limited living space of karst, and the topological index TI is close to 1, that is, they all tend to the herringbone structure. 2)The total root connection length of the three shrubs was longer,which was characterized by Cassia bicapsularis (597.17 cm) > Indigofera amblyantha (589.23 cm) > Pyracantha fortuneana (567.53 cm),but the difference between the species was not significant (P>0.05). In addition there was no significant difference between the root connection lengths of the tertiary and fourth roots (P>0.05), and there was a extremely significant difference between the root lengths of the other levels (P<0.01). 3)The total root branching rate of Pyracantha fortuneana (2.314) > Indigofera amblyantha (1.747) > Cassia bicapsularis (1.541), that is, the root branching ability of Pyracantha spinosa was the strongest. 4)The root systems of three shrubs distribute unevenly in horizontal direction, and there is uncertainty. In addition, shrub roots also exhibit a unique entangled and curved shape in the search for growth space.[Conclusions] In order to adapt to the karst fragile habitat, the shrub root system adopts the development of the herringbone structure, increases the length of root connection, reduces the branching rate of the root system, and grows in a curved winding manner, and the root system is unevenly distributed horizontally and is explored by the external habitat and the root itself. The common impact of the mechanism.

Key words： Karst area shrub root architecture adaptation strategy

Received: 07 May 2018

PACS:

Q142.9

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	Articles by authors
	HUANG Tongli
	TANG Lixia
	CHEN Long
	ZHANG Qiaoyan

Cite this article:

HUANG Tongli,TANG Lixia,CHEN Long, et al. Root architecture and ecological adaptation strategy of three shrubs in karst area[J]. SSWC, 2019, 17(1): 89-94.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2019.01.012 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2019/V17/I1/89

[1]	刘济明, 何跃军, 杨祖文, 等. 喀斯特退化生态系统柚木林植被恢复特征[J]. 西南大学学报(自然科学版), 2007, 29(4):116. LIU Jiming, HE Yuejun, YANG Zuwen, et al. Characteristics of Vegetation Restoration in Tectona grandis Forest in a Karst Degraded Ecosystem[J]. Journal of Southwest University(Natural Science Edition), 2007, 29(4):116.
[2]	朱守谦. 喀斯特森林生态研究Ⅱ[M]. 贵阳:贵州科技出版社, 1997:1. ZHU Shouqian. Ecological research on karst forest Ⅱ[M].Guiyang:Guizhou Science and Technology Publishing House, 1997:1.
[3]	陈洪松, 王克林. 西南喀斯特山区土壤水分研究[J]. 农业现代化研究, 2008, 29(6):734. CHEN Hongsong, WANG Kelin. Soil water research in Karst mountain area of Southwest China[J]. Research of Agricultural Modernization, 2008, 29(6):734.
[4]	李阳兵, 侯建筠, 谢德体. 中国西南岩溶生态研究进展[J]. 地理科学, 2002, 22(3):365. LI Yangbing, HOU Jianjun, XIE Deti. The recent development of research on Karst Ecology in southwestern China[J]. Scientia Geographica Sinica, 2002, 22(3):365.
[5]	ZWIENIECKI M A, NEWTON M. Roots growing in rock fissures:Their morphological adaptation[J]. Plant and Soil, 1994, 172(2):181.
[6]	HUANG Y Q, ZHAO P, ZHANG Z F, et al. Transpiration of Cyclobalanopsis glauca (syn. Quercus glauca) stand measured by sap-flow method in a karst rocky terrain during dry season.[J]. Ecological Research, 2009, 24(4):791.
[7]	聂云鹏, 陈洪松, 王克林. 土层浅薄地区植物水分来源研究方法[J]. 应用生态学报,2010,21(9):2427. NIE Yunpeng, CHEN Hongsong, WANG Kelin. Methods for determining plant water source in thin soil region:A review[J]. Chinese Journal of Applied Ecology, 2010, 21(9):2427.
[8]	单立山, 李毅, 董秋莲, 等. 红砂根系构型对干旱的生态适应[J]. 中国沙漠, 2012, 32(5):1283. SHAN Lishan, LI Yi, DONG Qiulian, et al. Ecological adaptation of Reaumuria soongorica root system architecture to arid enironment[J]. Journal of Desert Research, 2012, 32(5):1283.
[9]	何广志, 陈亚宁, 陈亚鹏,等. 柽柳根系构型对干旱的适应策略[J]. 北京师范大学学报(自然科学版), 2016, 52(3):277. HE Guangzhi, CHEN Yaning, CHEN Yapeng, et al. Adaptation strategies of tamatrix spp root architecture in and enironment[J]. Journal of Beijing Normal University(Natural Science), 2016, 52(3):277.
[10]	杨小林, 张希明, 李义玲, 等. 塔克拉玛干沙漠腹地几种植物根系分形特征[J]. 干旱区地理, 2009, 32(2):249. YANG Xiaolin, ZHANG Ximing, LI Yiling,et al. Root fractal characteristics at the hinterland of Taklimakan Desert[J]. Arid Land Ceogerphy,2009, 32(2):249.
[11]	单立山, 李毅, 任伟, 等. 河西走廊中部两种荒漠植物根系构型特征[J]. 应用生态学报, 2013, 24(1):25. SHAN Lishan, LI Yi, REN Wei,et al. Root architecture of two desert plants in central Hexi Corridor of Northwest China[J]. Chinese Journal of Applied Ecology, 2013, 24(1):25.
[12]	郭京衡, 曾凡江, 李尝君, 等. 塔克拉玛干沙漠南缘三种防护林植物根系构型及其生态适应策略[J].植物生态学报, 2014, 38(1):36. GUO Jingheng, ZENG Fanjiang, LI Changjun, et al. Root architecture and ecological adaptation strategies in three shelterbelt plant species in the southern Taklimakan Desert[J]. Chinese Journal of Plant Ecology, 2014, 38(1):36.
[13]	沈蕊, 白尚斌, 周国模, 等. 毛竹种群向针阔林扩张的根系形态可塑性[J]. 生态学报, 2016, 36(2):326. SHEN Rui, BAI Shangbin, ZHOU Guomo, et al. The response of root morphological plasticity to the expansion of a population of Phyllostachys edulis into a mixed needle-and broad-leaved forest[J]. Acta Ecologica Sinica, 2016, 36(2):326.
[14]	GLIMSKÄR A. Estimates of root system topology of five plant species grown at steady-state nutrition[J]. Plant and Soil, 2000, 227(1/2):249.
[15]	STRAHLER A N. Hypsometric (area-altitude) analysis of erosional topography[J]. Geological Society of America Bulletin, 1952, 63(11):1117.
[16]	FITTER A H, STICKLAND T R, HARVEY M L, et al. Architectural analysis of plant root systems of Architectural correlates of exploitation efficiency[J]. New Phytologist, 1991, 118(3):375.
[17]	OPPELT A L, KURTH W, GODBOLD D L. Topology, scaling relations and Leonardo's rule in root systems from African tree species[J]. Tree Physiology, 2001,21(2/3):117.
[18]	BIONDIN, M E, GRYGIEL C E. Landscape distribution of organisms and the scaling of soil resources[J]. American Naturalist, 1994, 143(6):1026.
[19]	陈丽华, 余新晓, 张东升. 整株林木垂向抗拉试验研究[J]. 资源科学, 2004, 26(S1):39. CHEN Lihua,YU Xinxiao,ZHANG Dongsheng.Experimental study on vertically tensile strength of whole tree[J].Resources Science, 2004, 26(S1):39.
[20]	BOUMA T J, NIELSEN K L, VANHAL J, et al. Root system topology and diameter distribution of species from habitats differing in inundation frequency[J]. Functional Ecology, 2001, 15(3):360.
[21]	FITTER A H. An architectural approach to the comparative ecology of plant root systems[J]. New Phytologist, 1987,106(1):61.