Growth responses of Carex lasiocarpa to different water regimes at different growing stages

Abstract

Abstract: Growth responses of Carex lasiocarpa to different water regimes and hydrologic experience were studied in seedling transplant and water control experiments. C. lasiocarpa had significant responses to different water conditions. Its above-ground、below-ground and rhizome biomass were biggest under dry-wet alternate conditions; fresh root/shoot ratio decreased with increasing water and increased with increasing dryness; the rhizome biomass percentage was greatest under -5 cm water level. For C. lasiocarpa with different hydrologic treatments, the biomass was bigger under dry-wet alternate conditions at some times in the season while root/shoot ratio and rhizome biomass percentage were higher if they had undergone the -5 cm water treatment through the growing season. C. lasiocarpa grew slowly when submerged, but continued by rhizome regeneration after submergence finished. To gain the maximal values of growth indicators, water requirements at different stages must be met. To achieve the optimum goals in wetland restoration and management, water regimes should be regulated according to the plants needs.

CLC Number:

Q945.17

WANG Li1,2, SONG Changchun1, HU Jinming3, YANG Tao1,2. Growth responses of Carex lasiocarpa to different water regimes at different growing stages[J]. Acta Prataculturae Sinica, 2009, 18(1): 17-24.

References

[1] 刘志民,蒋德明,高红瑛,等.植物生活史繁殖对策与干扰关系的研究[J].应用生态学报,2003,14(3):418-422.
[2] Baird A J, Wilby R L.生态水文学——陆生环境和水生环境植物与水分关系[M]. 赵文智,王根绪,译.北京:海洋出版社,2002.91-97.
[3] 武高林,杜国桢.植物形态生长对策研究进展[J].世界科技研究与发展,2007,29(4):47-51.
[4] Horsa′k M, Ha′jek M, Tichy′ L, et al. Plant indicator values as a tool for land mollusc autecology assessment[J]. Acta Oecologica, 2007, 32: 161-171.
[5] 彭艳,张全新,曾兵. 野生鸭茅植物学性特征变异研究[J]. 草业学报,2007,16(2):69-75.
[6] 周婵,杨允菲. 松嫩平原两个生态型羊草叶构件异速生长规律[J].草业学报,2006,15(5):76-81
[7] 杨允菲,邢福. 松嫩平原杂类草草甸宽叶蒿无性系种群构件年龄结构及其生产力[J].草业学报,2007,16(2):19-24.
[8] 孟婷婷,倪健,王国宏.植物功能性状与环境和生态系统功能[J].植物生态学报,2007,31(1):150-165.
[9] 赵魁义.中国沼泽志[M].北京:科学出版社,1999.55-56.
[10] 中国湿地植被编辑委员会.中国湿地植被[M].北京:科学出版社,1999.26-29,123-124.
[11] 何池全.毛果苔草湿地枯落物及地下生物量动态[J].应用生态学报,2003,14(3):363-366.
[12] 何池全,赵魁义.毛果苔草种群地上生物量与株高分形特征[J].应用生态学报,2003,14(4):640-642.
[13] 黄晓霞,江源,刘全儒,等. 小五台山亚高山草甸植物种分布的生境条件解释[J]. 草业学报,2007,16(6):7-13.
[14] 石红霄,周青平,颜红波,等. 3种根茎型禾草繁殖时空扩展初探[J]. 草业科学,2008,25(5):127-132.
[15] 朱志红,刘建秀,王孝安.克隆植物的表型可塑性与等级选择[J].植物生态学报,2007,31(4):588-598.
[16] 朱志玲,李德志,王绪平,等.克隆植物的水分生理整合及其生态效应[J].西北植物学报,2006, 26(12):2602-2614.
[17] 牛健忠,周禾,毛培胜,等. 在水分异质性供应下野牛草相连分株的反应[J]. 草业科学,2007,24(1):44-47.
[18] White S D, Ganf G G. A comparison of the morphology, gas space anatomy and potential for internal aeration in Phragmites australis under variable and static water regimes[J]. Aquatic Botany, 2002, 73: 115-127.
[19] Macek P, Rejma′nkova′E, Houdkova′K. The effect of long-term submergence on functional properties of Eleocharis cellulosa Torr[J]. Aquatic Botany, 2006, 84: 251-258.
[20] Mauchampa A, Blanch S, Grillas P. Effects of submergence on the growth of Phragmites australis seedlings[J]. Aquatic Botany,2001,69:147-164.
[21] Bakker C, van Bodegom P M, Nelissen H J M, et al. Preference of wet dune species for waterlogged conditions can be explained by adaptations and specific recruitment requirements[J]. Aquatic Botany, 2007, 86: 37-45.
[22] Ahna C, Mosera K F, Sparksb R E, et al. Developing a dynamic model to predict the recruitment and early survival of black willow (Salix nigra) in response to different hydrologic conditions[J]. Ecological Modeling, 2007, 204: 315-325.
[23] Boar R R. Responses of a fringing Cyperus papyrus L.swamp to changes in water level[J]. Aquatic Botany, 2006, 84: 85-92.