干旱区生态环境知识资源中心(Arid): 施肥对羊草(Leymus chinensis)割草场功能群物种丰富度和重要值的影响

Arid

	施肥对羊草(Leymus chinensis)割草场功能群物种丰富度和重要值的影响
其他题名	Effects of Fertilization on Functional Group Species Richness and Important Value in Leymus Chinensis Mowing Meadow
	代景忠 1; 闫瑞瑞 2; 卫智军1 ; 乌仁其其格 3; 辛晓平 2; 刘文亭 1
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2017
卷号	37 期号:3 页码:453-461
中文摘要	以呼伦贝尔羊草(Leymus chinensis)草甸天然割草场为研究对象,从植物功能群物种丰富度和重要值的变化来探讨施肥对群落物种多样性的影响机理。运用单、双因素方差分析和直线、曲线回归的方法对相关指标进行统计分析。结果表明: (1)施肥增加会使群落物种的丰富度逐渐降低,这一过程还受到施肥年限的影响。其中,豆科和莎草科功能群物种丰富度对施肥浓度的变化较为敏感(P < 0.05); 毛茛科和莎草科受施肥年限的影响较大(P < 0.05); 莎草科和杂草类则受到施肥浓度和施肥年限交互作用的影响(P < 0.05) 。(2)除莎草科和杂类草功能群外,禾本科、豆科、毛茛科、菊科均受施肥浓度显著影响(P < 0.05) 。禾本科和菊科的功能群重要值随施肥浓度的增加而上升,而豆科、毛茛科、杂草类则相应地下降。随着施肥年限的增加,禾本科和菊科功能群的重要值增大。(3)功能群重要值对年降雨量的响应较为敏感,干旱环境会使禾本科和豆科功能群的重要值降低,其他功能群重要值增加。各功能群丰富度和重要值对施肥的响应趋势均有不同,在确定合理的施肥量同时,还应充分考虑施肥年限和降水条件,从而实现草地资源的可持续性利用。
英文摘要	According to the mowing grassland of the Leymus chinensis meadow steppe in Hulun buir, researching the mechanism of community species diversity variation from the plant functional group species richness and the important value based on fertilization. Analyzing relevant indices in different methods including one-factor /two-factor variance analysis, linear regression and the curve regression. The results showed that: (1) Adding the concentration fertilizer reduced community species richness gradually, which was also affected by the fertilization year. Functional group species richness of Leguminosae and Cyperaceae was sensitive to the variation of fertilization concentration (P < 0.05); Ranunculaceae and Cyperaceae were influenced significantly by fertilization year (P < 0.05); Cyperaceae and weeds were affected by the interactive effects both fertilization concentration and fertilization year (P < 0.05). (2) In addition to the Cyperaceae and weeds functional group, there has significant impact on important value of Gramineae, Leguminosae, Ranunculaceae and Compositae in definite fertilization concentration(P < 0.05). The functional group important value of Gramineae and Compositae increased with the aggrandized fertilization concentration while the Leguminosae, Ranunculaceae and Weeds decreased accordingly. (3) The response of functional groups important value was sensitive to annual rainfall and the Gramineae, Leguminosae function group important value were reduced in arid environment while the other functional group important value was increased accordingly. Because of the different response to the fertilization on functional group richness and important value, we should also give full consideration to the interannual precipitation conditions and fertilization year before fertilization in order to achieve the sustainable utilization of grassland resources.
中文关键词	割草场 ; 施肥 ; 功能群 ; 丰富度 ; 重要值 ; 降雨量
英文关键词	mowing land fertilization functional group richness importance value precipitation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5988935
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237095
作者单位	1.内蒙古农业大学生态环境学院, 呼和浩特, 内蒙古 010019, 中国; 2.中国农业科学院农业资源与农业区划研究所, 北京 100081, 中国; 3.呼伦贝尔学院生命科学与化学学院, 海拉尔, 内蒙古 021008, 中国
推荐引用方式 GB/T 7714	代景忠,闫瑞瑞,卫智军,等. 施肥对羊草(Leymus chinensis)割草场功能群物种丰富度和重要值的影响[J]. 内蒙古农业大学,2017,37(3):453-461.
APA	代景忠,闫瑞瑞,卫智军,乌仁其其格,辛晓平,&刘文亭.(2017).施肥对羊草(Leymus chinensis)割草场功能群物种丰富度和重要值的影响.中国沙漠,37(3),453-461.
MLA	代景忠,et al."施肥对羊草(Leymus chinensis)割草场功能群物种丰富度和重要值的影响".中国沙漠 37.3(2017):453-461.