干旱区生态环境知识资源中心(Arid): 荒漠植物叶片水分和功能性状特征及其相互关系

Arid

	荒漠植物叶片水分和功能性状特征及其相互关系
其他题名	Characteristics and Relationships of Foliar Water and Leaf Functional Traits of Desert Plants
	李善家; 苏培玺; 张海娜; 周紫鹃; 解婷婷
来源期刊	植物生理学报
ISSN	2095-1108
出版年	2013
卷号	49 期号:2 页码:153-160
中文摘要	选取黑河流域中游荒漠区14种优势植物,测定了8个叶片水分与功能性状指标:稳定碳同位素组成(delta~(13)C)、总含水量(TWC)、相对含水量(RWC)、干重含水量(DWWC)、叶干物质含量(LDMC)、叶片水势(LWP)、比叶面积(SLA)、比叶体积(SLV),探讨荒漠植物叶片水分与功能性状的特征以及相互之间的内在联系,探寻反映荒漠植物适应严酷环境的典型叶性状特征。结果表明:C_4植物珍珠猪毛菜、梭梭、沙拐枣的delta~(13)C值变化范围在-18~-15,其余的C3植物变化范围在-29~-24,其中花棒的delta~(13)C值最小,为-28.34,红砂最大,为-24.63;对C_3荒漠植物叶性状之间相关性分析显示,SLV与LDMC之间呈极显著负相关(P<0.01),与TWC、DWWC之间呈极显著正相关(P<0.01),SLA与LDMC之间呈显著负相关(P=0.02),delta~(13)C与LWP之间呈极显著负相关(P<0.01)。SLV可以作为反映荒漠植物叶性状特征的重要指标,叶片水分及功能性状之间所呈现的特征及其对生境的响应都综合表现出荒漠植物的生态应对策略和适应途径。
英文摘要	Selected 14 dominant desert plant species in the middle reaches of Heihe River Basin, and 8 foliar water and leaf functional traits including stable carbon isotope composition (delta~(13)C), total water content (TWC), relative water content (RWC), dry weight water content (DWWC), leaf dry matter content (LDMC), leaf water potential (LWP), specific leaf area (SLA) and specific leaf volume (SLV) were measured, studying on the characteristics and relationships of leaf functional traits of desert plants, and finding typical and crucial leaf functional traits which reflect plant adaptations to the harsh environment. The present results showed that foliar delta~(13)C values of C_4 plants ranged from -18~- 15, including Salsolapasserina, Haloxylon ammodendron and Calligo-num mongolicum, and foliar delta~(13)C values of the other C_3 plants ranged from -29~-24. Among them,delta~(13)C values of Hedysarum scoparium and Reaumuria soongorica exhibited the minimum and maximum values of -28.34 and -24.63,respectively. The relationship between the traits obtained from C_3 plants revealed that was significantly negatively correlated with LDMC (P<0.01),and positively correlated with TWC and DWWC (P<0.01). SLA was negatively correlated with LDMC (P=0.02), and delta~(13)C was negatively correlated with LWP (P<0.01). SLV may serve as a key index of the characteristics of leaf traits of desert plants. Both the characteristics of leaf water content and functional traits and the responses to habitats demonstrate ecological strategies and adaptive ways of desert plants.
中文关键词	荒漠植物 ; 叶片 ; 含水量 ; 功能性状 ; 相互关系
英文关键词	desert plants leaf water content functional traits relationships
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:4818655
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230443
作者单位	中国科学院寒区旱区环境与工程研究所临泽内陆河流域研究站, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	李善家,苏培玺,张海娜,等. 荒漠植物叶片水分和功能性状特征及其相互关系[J]. 中国科学院西北生态环境资源研究院,2013,49(2):153-160.
APA	李善家,苏培玺,张海娜,周紫鹃,&解婷婷.(2013).荒漠植物叶片水分和功能性状特征及其相互关系.植物生理学报,49(2),153-160.
MLA	李善家,et al."荒漠植物叶片水分和功能性状特征及其相互关系".植物生理学报 49.2(2013):153-160.