不同生境条件下羊草种群无性系和有性生殖特征的比较研究

应用生态学报 ›› 2001, Vol. ›› Issue (3): 379-383.

不同生境条件下羊草种群无性系和有性生殖特征的比较研究

王仁忠

中国科学院植物研究所植被数量生态学开放研究实验室, 北京 100093

收稿日期:2000-04-21 修回日期:2000-07-25 出版日期:2001-05-25
基金资助:
国家自然科学基金项目(39899370)和国家教委跨世纪优秀人才培养计划项目资助.

Comparative study on clonal and sexual reproductive traits of Leymus chinensis populations in different habitats

WANG Renzhong

Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093

Received:2000-04-21 Revised:2000-07-25 Online:2001-05-25

摘要/Abstract

摘要： 比较研究了东北草原不同生境条件下4个羊草种群无性系和有性生殖数量特征的差异,结果表明,由于各种群所处立地的资源差异(特别是土壤水分),导致各种群在无性系(包括营养枝和根茎芽密度)和有性生殖(生殖枝密度、生殖枝分化率、生殖贡献)等数量特征方面差异显著,尤其在低平原种群与沙丘种群之间最为显著.与沙丘种群相比,低平原种群营养枝平均密度高50%;根茎芽平均密度高30%以上;生殖枝密度平均值高200%以上.

Abstract: The variations of clonal and reproductive traits between four Leymus chinensis populations in different habitats were studied on northeast grasslands of China. The results showed that significant differences existed among Leymus chinensis populations in both clone traits (vegetative shoot densities and tiller densities) and sexual reproduction traits (reproductive shoot densities,reproductive shoot differentiation and reproductive effects),primarily due to the habitat heterogeneity of sites,especially the difference in soil moisture.The difference between grassland population and dune population was relatively greater,and the average vegetative shoot density,tiller density and sexual shoot density from grassland population were 50%,30% and 200% greater than those from dune,respectively.

中图分类号:

Q948.1
S812

王仁忠. 不同生境条件下羊草种群无性系和有性生殖特征的比较研究[J]. 应用生态学报, 2001, (3): 379-383.

WANG Renzhong . Comparative study on clonal and sexual reproductive traits of Leymus chinensis populations in different habitats[J]. Chinese Journal of Applied Ecology, 2001, (3): 379-383.

参考文献

[1] Ashman TL, Baker I. 1992. Variation in floral sex allocation with time of season and currency. Ecology, 73(4):1237～1243
[2] Dekroon H, Huthchings MJ. 1995. Morphological plasticity in clonal plant:the forageing concept reconsidered. J Ecol, 83:143～152
[3] Delph LF. 1990. Sexual-differental resource allocation patterns in the subdioecious shrub liebe subalpina. Ecology, 71(4):1342～1351
[4] Domros M, Peng GB. 1988. The Climate of China. Berlin:SpringerVerlag. 360.
[5] Dong M(董鸣). 1996. Clonal growth in plant in relation to resource heterogeneity:foraging behavior. Acta Bot Sin ( 植物学报),38:828～835(in Chinese)
[6] Dong M, Bao Alaten. 1999. Clonal plasticity in response to rhizome severing and heterogeneous resource supply in the rhizomatous grass Psammochloa villosa in an Inner Mongolian dune, China. Plant Ecol,141:53～58
[7] Dong M(董鸣). 1996. Plant clonal growth in heterogeneity habitats:risk-spreading. Acta Phytoecol Sin (植物生态学报), 20:543～548 ( inChinese)
[8] Dong M, During HJ, Werger MJA et al. 1996. Morphological responses to nutrient availability in four clonal plants. Vegetatio, 123:183～192
[9] Evans JP. 1992. The effects of local resource availability and clonal integration on ramet functional morphology in Hydrocotyle bonariensis.Oecologia, 89:265～276
[10] Ford H.1981. The demography of three populations of dandelion. Bio JLinnean Soc, 15:1～11
[11] Hutchings MJ, de Kroon H. 1994. Foraging in plant:The role of morphological plasticity in resource acquisition. Adv Ecol Res, 25:159～258
[12] Li J-D(李建东). 1979. The Aneurolepidium chinense (Trin) Kitagawa grassland in China. J Jilin Teacher Univ(吉林师范大学学报),1:145～153(in Chinese)
[13] Li Z-Q(李镇清). 1999. Architecture of clonal plants and morphologicai responses to habitat heterogeneity. Acta Bot Sin (植物学报),41:893～895 (in Chinese)
[14] Reekie EG, Bazzaz FA. 1987. Reproductive effort in plant I. carbon allocation to reproduction. The Amer Natu, 129:876～896
[15] Ripley EA, Wang RZ, Zhu TC. 1996. The Climate of the Songnen Plain, Northeast China. Inter J Ecol and Environ Sci, 22:1～22
[16] Rozijn NAMG, Werf DCVD. 1986. Effect of drought during different stages in the lifecycle on the growth and biomass allocation of two Aira species. J Ecol, 74:507～523
[17] Slade AJ, Hutchings MJ. 1987. The effects of nutrient availability on foraging in the clonal herb Glechoma hederacea.J Ecol,75:95～112
[18] Wang R-Z(王仁忠), Zu Y-G(祖元刚), Nie S-Q(聂绍筌).1999.Preliminary study on biomass reproductive allocation in Leymus chinensis population. Chin J Appl Ecol (应用生态学报),10(5):553～555
[19] Wang R-Z(王仁忠), Li J-D(李建东). 1993. Effect of grazing on distribution of plant populations of Aneurolepidium chinense grassland on Songnen plain. Pratacul Sci (草业科学), 10(3):27～34(in Chinese)
[20] Wang R-Z(王仁忠). 1999. Reproductive ecology of Leymus chinensis population. Ph. D. dissertation of Northeast Forest University, Northeast Forest University, Harbin, China. (in Chinese)
[21] Wang R-Z(王仁忠). 2000. Effects of grazing on reproduction in Leymus chinensis population. Chin J Appl Ecol (应用生态学报),11(3):399～402(in Chinese)
[22] Wang RZ, Ripley EA. 1997. Effects of grazing on a Leymus chinensis grassland on the Songnen plain of northeastern China. J Arid Envi,36:307～318
[23] Wang Y-S(王昱生). 1993. Dynamics of a clonal Leymus chinensis population in the Songnen steppe in northeastern China. Acta Ecol Sin (生态学报), 13:291～299(in Chinese)