科尔沁沙地典型生境下芦苇的生长特征分析

摘要/Abstract

摘要：

对科尔沁沙地两类典型生境下芦苇根茎生长及生物量等特性进行了分析研究。结果表明,固定样地芦苇株高、分蘖株数、不定芽数、根茎节数及根茎总长均大于半流动样地。从半流动样地到固定样地,芦苇根茎表现出节间长度缩短,节间直径变粗的趋势。固定样地芦苇叶长、叶宽明显大于半流动样地,并且固定样地芦苇叶间距是半流动样地上的近3倍。与半流动样地相比,固定样地根茎生物量在总生物量中所占比例有所增加,而地上生物量所占比例减小。芦苇根茎生长及生物量分配在两类样地间的变化特征与土壤质地、紧实度以及养分含量等因素有密切的联系,同时也反映了芦苇对不同沙生生境的适应对策。

关键词: 芦苇, 典型沙生生境, 无性系植物, 根茎生长, 生物量

Abstract:

The rhizomes growth and biomass allocation of Phragmites australis in two typical sandy habitats in Horqin Sandy Land were studied in this paper. The results were as follows: compared to the Phragmites australis on semi-mobile sand dunes, those on the fixed sand dunes had higher height, larger tillers number, longer rhizomes, more adventitious buds and more internodes. The length of internodes became shorter and the diameter of internodes became greater from the semi-mobile sand dune to the fixed sand dune. The leaf length, leaf width and the length between leaves of Phragmites australis were greater on fixed sand dunes than those on semi-mobile sand dunes. Compared to Phragmites australis on the semi-mobile sand dunes, those on fixed sand dunes allocated more biomass to rhizomes and less biomass to aboveground parts. Those growth changes in Phragmites australis were closely associated with the soil texture, soil hardness and nutrient content in different habitats, and it showed the plant adaptation strategies to different environments.

Key words: Phragmites australis, typical sandy habitat, clonal plant, growth of rhizomes, biomass

中图分类号:

Q945

何玉惠;赵哈林;刘新平;赵学勇. 科尔沁沙地典型生境下芦苇的生长特征分析[J]. 中国沙漠, 2009, 29(2): 288-292.

HE Yu-hui;ZHAO Ha-lin;LIU Xin-ping;ZHAO Xue-yong. Growth Characteristics of Phragmites australis in Typical Habitats of Horqin Sandy Land[J]. JOURNAL OF DESERT RESEARCH, 2009, 29(2): 288-292.

参考文献

[1]张勇,薛林贵,高天鹏,等.荒漠植物种子萌发研究进展[J].中国沙漠,2005,25（1）:106-112.
[2]张景光,王新平,李新荣,等.荒漠植物生活史对策研究进展与展望[J].中国沙漠,2005,25（3）:306-314.
[3]刘爽,高玉葆,陈世苹,等.科尔沁沙地白草、赖草无性系生长及适应对策的初步研究[J].中国沙漠,1999,19(增刊1):75-78.
[4]任安芝,高玉葆,王金龙.农牧交错区弃耕地生境中白草无性系的形态可塑性研究[J].中国沙漠,2000,20(增刊):33-37.
[5]杨允菲,张宝田,张春华.松嫩平原赖草无性系构件的形成与空间扩展实验[J].应用生态学报,2007,18(5):977-982.
[6]杨允菲,郎惠卿.不同生态条件下芦苇无性系种群调节分析[J].草业学报,1998,7(2):1-6.
[7]Haslam S M.The performance of Phragmites communis Trin. in relation to temperature[J].Ann Bot,1975,39:881-888.
[8]杨允菲,李建东.松嫩平原不同生境芦苇种群分株的生物量分配与生长分析[J].应用生态学报,2003,14 (1):30-34.
[9]赵哈林,苏永中,张华,等.灌丛对流动沙地土壤特性和草本植物的影响[J].中国沙漠,2007,17(3):385-390.
[10]Newton P C D, Hay M J M.Clonal growth of white clover:factors influencing the viability of axillary buds and the outgrowth of a viable bud to form a branch[J].Annals of Botany,1996,78(1):111-115.
[11]董鸣.资源异质性环境中的植物克隆生长:觅食行为[J].植物学报,1996,38(10):828-835.
[12]沈彦,张克斌,边振,等.人工封育区土壤紧实度对植被特征的影响——以宁夏盐池为例[J].水土保持研究,2007,14(6):81-84.
[13]常学礼,崔步礼,陈雅琳,等.流动沙丘土壤紧实度对沙米生长状况的影响[J].自然资源学报,2006,21（2）:238-244.
[14]李鸣岗.沙土疏松或紧实度对植物根系生长的影响[J].科学通报,1960(7):218-219.
[15]Slade A J,hutchings M J,et al.The effects of nutrient availability on foraging in the clonal herb Glechoma hederacea[J].J Ecol, 1987,75:95-112.
[16]李芳兰,包维楷.植物叶片形态解剖结构对环境变化的响应与适应[J].植物学通报,2005,22(增刊):118-127.
[17]陈世苹,高玉葆,任安芝,等.科尔沁沙地农田-沙丘交错区白草无性系的生态适应性分析[J].应用生态学报,2002,13(1):45-49.
[18]刘庆, 钟章成.斑苦竹无性系生长与水分供应及其适应对策的研究[J].植物生态学报,1996,20(3):245-254.
[19]刘左军,杜国祯,陈家宽.不同生境下黄帚橐吾个体大小依赖的繁殖分配[J].植物生态学报,2002,26(1):44-50.