干旱区生态环境知识资源中心(Arid): 凝结水对荒漠区短命植物狭果鹤虱的生态作用

Arid

	凝结水对荒漠区短命植物狭果鹤虱的生态作用
其他题名	Ecological Effects of Condensed Water to Ephemeral Plants Lappula semiglabra in Desert
	刘志东 1; 冉启洋 1; 陈悦 1; 郄亚栋 1; 吕光辉2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2018
卷号	35 期号:6 页码:1290-1298
中文摘要	以中国西北干旱荒漠区新疆艾比湖湿地自然保护区为研究区,选取对水分输入响应最敏感的短命植物狭果鹤虱,通过遮盖处理形成不遮盖(T1组)、半遮盖(T2组)与全遮盖(T3组)的3个凝结水梯度;研究凝结水的多少对狭果鹤虱的株高、冠幅、叶面积、叶片厚度、根长、根径、叶片相对含水量、叶片水势以及生物量分配的影响。结果表明:①在植株生长季中后期,随着凝结水量增加,植株高度、冠幅面积、叶面积、叶厚度、叶片相对含水率、净光合速率与气孔导度叶片水势均显著增加(P < 0.05);相反地,根长和根径在3个凝结水量上没有显著差别(P > 0.05)。②茎质比(SMR)在生物量分配中是一个比较稳定的性状,从T1 ~ T3组,变化幅度为3.0% ~ 13.5%。个体植株叶质比(LMR)差异显著(P < 0.05),根质比(RMR)均逐渐下降,但并未表现出显著差异。综合可知,干旱区中,狭果鹤虱的叶片可以吸收并利用凝结水,形态性状对水分极度敏感且具有较高变异性,主要通过改变地上性状、不改变地下性状的策略吸收利用大气凝结水。
英文摘要	In this study,Lappula semiglabra,an ephemeral plant species and the most sensitive to water conditions in the Ebinur Lake Wetland Nature Reserve,Xinjiang,northwest China,was selected as the research object.Three condensed water gradients,i.e.,the group T1 without cover,group T2 treated with semi-covered and group T3 treated with complete cover,were designed.The purposes of the study were to lucubrate the effects of condensed water on the plant height,canopy size,leaf area,leaf thickness,root length,root diameter,leaf relative water content,leaf water potential and biomass allocation of L.semiglabra plant.The results showed that:① In the late plant growth season,the plant height,canopy size,leaf area,leaf thickness,leaf relative water content,net photosynthetic rate,stomatal conductance and leaf water potential were significantly increased (P < 0.05) with the increase of condensed water;on the contrary,there was no significant difference of root length and root diameter among the 3 treatments (P > 0.05);② The stem mass ratio (SMR) was relatively stable in the biomass allocation,and it varied in a range of 3.0%-13.5%.The difference of leaf mass ratio (LMR) among plants was significant(P < 0.05),the root mass ratio (RMR) decreased gradually,but there was no significant difference.It could be concluded that the leaves of L.semiglabra in arid area can absorb and utilize condensed water.The morphological characters are highly sensitive to water and have high variability.
中文关键词	荒漠区 ; 短命植物 ; 狭果鹤虱 ; 凝结水 ; 艾比湖流域 ; 新疆
英文关键词	desert region ephemeral plant Lappula semiglabra condensed water Ebinur Lake Xinjiang
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:6372452
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237685
作者单位	1.新疆大学资源与环境科学学院;;绿洲生态教育部重点实验室, ;;绿洲生态教育部重点实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830046;;830046, 中国; 2.绿洲生态教育部重点实验室;;新疆大学干旱生态环境研究所, 绿洲生态教育部重点实验室;;, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830046;;830046, 中国
推荐引用方式 GB/T 7714	刘志东,冉启洋,陈悦,等. 凝结水对荒漠区短命植物狭果鹤虱的生态作用[J]. 新疆大学,2018,35(6):1290-1298.
APA	刘志东,冉启洋,陈悦,郄亚栋,&吕光辉.(2018).凝结水对荒漠区短命植物狭果鹤虱的生态作用.干旱区研究,35(6),1290-1298.
MLA	刘志东,et al."凝结水对荒漠区短命植物狭果鹤虱的生态作用".干旱区研究 35.6(2018):1290-1298.