松嫩草原水淹恢复演替过程中羊草无性系种群构件的物质生产与贮藏

摘要/Abstract

摘要： 在松嫩平原羊草草甸,对水淹恢复演替过程中半径为0.5、1、3、和10 m的羊草无性系种群斑块分蘖株的物质生产和根茎的物质贮藏进行了研究.结果表明,0.5、1、3、 m斑块各圈和10 m中间及边缘根茎的物质贮藏以1龄级、不同斑块各圈分蘖株的物质生产以1、2龄级对种群的贡献最大,其物质贮藏和生产所占比例均逐圈增加.整体上,年轻龄级分蘖株和根茎具有旺盛的物质生产力和贮藏力.无性系斑块由中心至外围的物质生产和贮藏规律与斑块扩展趋势具有一致性.0.5～10 m斑块分蘖株物质生产力和根茎贮藏力的变异以最外圈最大.在水淹羊草草甸的恢复过程中,不同大小羊草无性系斑块种群构件的物质生产和贮藏策略为种群不断扩展和群落进展演替奠定了物质基础.

关键词: 羊草, 无性系种群, 物质生产和贮藏, 恢复演替, 水淹草甸

Abstract: In this paper,the tiller matter production and the rhizome matter storage of Leymus chinensis clonal populations in the patches with radius of 0.5,1,3,5 and 10 m were studied in the restoration succession process of flooded meadow in Songnen Plain.The results indicated that in each patch,1 and 2 age classes had the most tiller matter production,while in the patches except in the center of 10 m patch,the rhizome matter storage of 1 age class was predominant.The proportion of the matter production and storage increased with increasing patch radius.On the whole,young tillers and rhizomes had vigorous matter productivity and storage capacity.From the center to the edge of each patch,the matter production and storage were consistent with the trend of patch expansion,and the variation of tiller matter productivity and rhizome matter storage capacity was the biggest at the edge of each patch.The matter production and storage strategies of L.chinensis clonal population modules settled the matter basis for population expansion and progressive succession of community in the restoration succession process of flooded meadow.

Key words: Leymus chinensis, Clonal population, Matter production and storage, Restoration succession, Flooded meadow

中图分类号:

Q948

李海燕, 杨允菲. 松嫩草原水淹恢复演替过程中羊草无性系种群构件的物质生产与贮藏[J]. 应用生态学报, 2005, 16(12): 2339-2343.

LI Haiyan, YANG Yunfei . Matter production and storage of Leymus chinensis clonal populations in restoration succession process of flooded meadow in Songnen Plain of China[J]. Chinese Journal of Applied Ecology, 2005, 16(12): 2339-2343.

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