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...
中国沙漠  2012 

红砂根系构型对干旱的生态适应

Keywords: 拓扑指数,分形维数,分形丰度,生态适应,根系构型

Full-Text   Cite this paper   Add to My Lib

Abstract:

对西北干旱、半干旱区不同生境条件下红砂(Reaumuriasoongorica)根系构型参数进行了分析,以探讨红砂根系构型对干旱的生态适应性。结果表明:①不同生境条件下红砂根系的拓扑指数均较小,根系分支模式接近叉状分支模式,但在干旱的河西走廊风沙区和戈壁区红砂根系拓扑指数均逐渐增加,表明干旱有使红砂根系分支向鱼尾分支模式发展。②干旱的河西走廊风沙区和戈壁区红砂根系分形维数均较小,分别为1.1778、1.1169,分形特征不是很明显;而半干旱的黄土丘陵沟壑区分形维数较大,根系具有很好的分形特征。③干旱的河西走廊红砂根系总分支率均比半干旱的黄土丘陵沟壑区要小,表明在半干旱的黄土丘陵沟壑区红砂根系分支能力相对较强,随着干旱的增加其分支能力有所减弱。④不同生境条件下红砂根系的连接长度都较大,但不同生境却表现出明显差异,其中干旱风沙区根系平均连接长度最长。红砂为适应干旱的环境通过减少根系次级分支和根系的重叠、增加根系连接长度,使其根系的分支模式向鱼尾分支模式发展以降低根系内部对营养物质的竞争,提高根系对营养物质的吸收效率,保证植物有效的营养空间,从而在资源贫瘠的环境中吸收足够的水分和营养来保证其正常生理需求。

References

[1]  孙栋元,赵成义,王丽娟,等.荒漠植物构型研究进展[J].水土保持研究,2011,18(5):281-287.
[2]  Lynch J.Root architecture and plant productivity[J].Plant Physiology,1995,109(1):7-13.
[3]  周艳松,王立群.星毛委陵菜根系构型对草原退化的生态适应[J].植物生态学报,2011,35(5):490-499.
[4]  Tsakaldimi M,Tsitsoni T,Ganatsas P,et al.A comparison of root architecture and shoot morphology between naturally regenerated and container-grown seedlings of Quercus ilex[J].Plant and Soil,2009,324(1-2):103-113.
[5]  陈世鍠,张昊,王立群,等.中国北方草地植物根系[M].长春:吉林大学出版社,2001.
[6]  王义琴,张慧娟,白克智,等.分形几何在植物根系研究中的应用[J].自然杂志,1999,21(3):143-145.
[7]  杨培岭,罗远培.冬小麦根系形态的分形特征[J].科学通报,1994,39(20):1911-1913.
[8]  马新明,席磊,熊淑萍,等.大田期烟草根系构型参数的动态变化[J].应用生态学报,2006,17(3):373-376.
[9]  冯斌,杨培岭.植物根系的分形及计算机模拟[J].中国农业大学学报,2000,5(2):96-99.
[10]  王政权,郭大力.根系生态学[J].植物生态学报,2008,32(6):1213-1216.
[11]  Glimskr A.Estimates of root system topology of five plant species grown at steady-state nutrition[J].Plant and Soil,2000,227(1-2):249-256.
[12]  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):360-369.
[13]  杨小林,张希明,李义玲,等.塔克拉玛干沙漠腹地3种植物根系构型及其生境适应策略[J].植物生态学报,2008,32(6):1268-1276.
[14]  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):249-254.
[15]  杨小林,张希明,单立山,等.塔克拉玛干沙漠腹地塔克拉玛干柽柳根系构筑型研究[J].干旱区研究,2008,25(5):660-667.
[16]  Martínez-Sánchez J J,Ferrandis P,Trabaud L,et al.Comparative root system structure of post-fire Pinus halepensis Mill.and Cistus monspeliensis L.saplings[J].Plant Ecology,2003,168(2):309-320.
[17]  陈鹏,潘晓玲.河西走廊地区植物的区系特征[J].植物研究,2001,21(1):24-29.
[18]  刘家琼,邱明新,蒲锦春,等.我国荒漠典型超旱生植物——红砂[J].植物学报,1982,24(5):485-488.
[19]  马茂华,孔令韶.新疆呼图壁绿洲外缘的琵琶柴生物生态学特性研究[J].植物生态学报,1998,22(3):237-244.
[20]  黄培祐,聂湘萍.准噶尔盆地中部琵琶柴群落的生境研究[J].新疆大学学报,1988,5(3):66-71.
[21]  种培芳,李毅,苏世平,等.红砂3个地理种群的光合特性及其影响因素[J].生态学报,2010,30(4):914-922.
[22]  种培芳,李毅,苏世平.荒漠植物红砂叶绿素荧光参数日变化及其与环境因子的关系[J].中国沙漠,2010,3(30):539-544.
[23]  周海燕,谭会娟,张志山,等.红砂和珍珠对极端环境的生理响应与调节机制[J].中国沙漠,2012,32(1):24-32. 浏览
[24]  周生荟,刘玉冰,谭会娟,等.荒漠植物红砂在持续干旱胁迫下的光保护机制研究[J].中国沙漠,2010,30(1):69-73. 浏览
[25]  Oppelt A L,Kurth W,Dzierzonb H,et al.Structure and fractal dimensions of root systems of four co-occurring fruit tree species from Botswana[J].Annals of Forest Science,2000,57(5-6):463-475.
[26]  Oppelt A L,Kurth W,Godbold D L.Contrasting rooting patterns of some arid-zone fruit tree species from Botswana-Ⅱ.Coarse root distribution[J].Agro Forestry Systems,2005,64(1):13-24.
[27]  Fitter A H.The topology and geometry of plant root systems:Influence of watering rate on root system topology in Trifolium pratense[J].Annals of Botany,1986,58(1):91-101.
[28]  Fitter A H.An architectural approach to the comparative ecology of plant root systems[J].New Phytologist,1987,106(1):61-77.
[29]  Fitter A H,Stickland T R,Harvey M L,et al.Architectural analysis of plant root systems 1.Architectural correlates of exploitation efficiency[J].New Phytologist,1991,118(3):375-382.
[30]  Fitter A H,Sticklabd T R.Architectural analysis of plant root systems 2.Influence of nutrient supply on architectural contrasting plant species[J].New Phytologist,1991,118(3):383-389.
[31]  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):117-128.
[32]  Atsumi J,Yamauchi A,Kono Y.Fractal analysis of plant root systems[J].Annals of Botany,1989,64(5):499-503.
[33]  Ketipearachchi K W,Tatsumi J.Local fractal dimension and multifractal analysis of the root system of legumes[J].Plant Production Science,2000,3(3):287-295.
[34]  Berntson G M.The Characterization of topology:A comparison of four topological indices for rooted binary trees[J].Journal of Theoretical Biology,1995,177(3):271-281.
[35]  Strahler A N.Hypsometric (area altitude) analysis of erosional topology[J].Geological Society of America Bulletin,1952,63(11):1117-1142.
[36]  汪洪,金继运,山内章.以分维数法分形分析水稻根系形态特征及初探其与锌吸收积累的关系[J].作物学报,2008,34(9):1637-1643.
[37]  Quijano-Guerta C,Kirk G J D,Portugal A M,et al.Tolerance of rice germplasm to zinc deficiency[J].Field Crops Research,2002,76(2):123-130.
[38]  Berntson G M.Topological scaling and plant root system architecture:Developmental and functional hierarchies[J].New Phytologist,1997,135(4):621-634.
[39]  廖成章,余翔华.分形理论在植物根系结构研究中的应用[J].江西农业大学学报,2001,23(2):192-196.
[40]  杨培岭,任树梅,罗远培.分形曲线度量与根系形态的分形表征[J].中国农业科学,1999,32(1):89-92.
[41]  高照全,张显川,王小伟.不同水分条件下桃树根系的分形特征[J].天津农业科学,2006,12(3):20-22.
[42]  陈吉虎,余新晓,有祥亮,等.不同水分条件下银叶椴根系的分形特征[J].中国水土保持科学,2006,4(2):71-74.
[43]  Kai L N,Carter R M,Douglas B,et al.Fractal geometry of root systems:Field observations of contrasting genotypes of common bean (Phaseolus vulgaris L.) grown under different phosphorus regimes[J].Plant and Soil,1999,206(2):181-190.
[44]  木巴热克·阿尤普,陈亚宁,李卫红,等.极端干旱环境下的胡杨细根分布与土壤特征[J].中国沙漠,2011,31(6):1449-1458. 浏览
[45]  张晓蕾,曾凡江,刘波,等.塔干沙漠南缘骆驼刺幼苗根系生长和分布对不同灌溉量的响应[J].中国沙漠,2011,31(6):1459-1466. 浏览
[46]  刘健,贺晓,包海龙,等.毛乌素沙地沙柳细根分布规律及与土壤水分分布的关系[J].中国沙漠,2010,30(6):1362-1366. 浏览

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133