干旱区生态环境知识资源中心(Arid): 荒漠植物叶片化学性状及其经济谱对水盐变化的响应

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	荒漠植物叶片化学性状及其经济谱对水盐变化的响应
其他题名	Responses of leaf chemical trait and economics spectrum in desert plants to varied soil water and salinity
	张雪妮 1; 李岩 1; 杨晓东 2; 何学敏 1; 吕光辉1
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2018
卷号	37 期号:5 页码:1299-1306
中文摘要	掌握植物叶功能性状及其经济谱对环境变化的响应规律,有助于从功能生态学角度理解植物对环境的适应机制。本研究分析了高、低土壤水盐环境下荒漠植物群落及物种水平的叶片化学性状差异及叶经济谱响应规律。结果表明,随着土壤水盐下降,(1)群落水平叶片碳(C)和钙(Ca)含量显著下降,氮(N) 、磷(P)含量无显著变化,硫(S) 、钾(K) 、钠(Na)和镁(Mg)含量显著增加(P<0.05); (2)植物性状与群落内共生种间的差异(alpha_i)总体呈高水盐环境下高于共存种,而低水盐环境下低于共存种的趋势,alpha_i的变幅总体增加,即性状的种间分化随着土壤水盐降低而加剧; (3)低水盐环境下植物叶片N、S、K、Na和Mg含量的生态位(beta_i)总体高于高水盐环境,C和Ca反之,土壤水盐显著影响物种化学性状的生态位; beta_i变幅总体减小,即物种的生态位宽度随着土壤水盐降低而减小; (4)随着土壤水盐下降,荒漠植物叶经济谱呈光捕捉元素C、N和P,与渗透-代谢调节元素S、K、Ca、Na和Mg间权衡加剧的变化趋势。本研究为探索荒漠植物在胁迫环境下的资源利用策略和适应机制提供理论参考。
英文摘要	Exploring the responses of leaf chemical traits and their economics spectrum to environmental changes would help understand plant adaptive strategy from a functional perspective. In this study,responses of plant chemical traits and their correlations at species and community levels to different soil water and salinity conditions in the Ebinur Lake Wetland National Nature Reserve,northwest of Xinjiang Uygur Autonomous Region were analyzed. The results showed that: (1) With the decreases of soil water and salinity,leaf C content at community level (p_i) significantly decreased (P<0.05),Ca content marginally significantly decreased (P<0.1),leaf S,K,Na and Mg contents significantly increased (P<0.05),and leaf N and P contents showed no significant changes (P>0.05). (2) Alpha trait value (alpha_i),representing interspecific differences of plants within community,was higher than co-occurred species in the plots with high soil water and salinity,while it was lower than co-occurred species in the plots with low soil water and salinity. The increases of the range of alphai indicated an intensifying trait divergence with changes of soil water and salinity. (3) Beta trait values (beta_i) represented the ecological niche in community trait gradient. beta_i of plant N,S,K,Na,Mg in the plots with low soil water and salinity was high-er than that in the plots with high soil water and salinity,while C and Ca contents showed the opposite pattern. Such beta_i differences indicated the significant effects of soil water and salinity on ecological niche of species chemical trait. The range of beta_i trait became smaller with the decreases of soil water and salinity,indicating the decrease of ecological niche breadth. (4) Trade-offs between light-capture chemistry such as C,N and P and osmotic-metabolic regulation chemistry such as S,K,Ca,Na and Mg were intensified as soil water and salinity decreased. Our results provide theoretical basis for understanding the resource use strategy and adaptation mechanism of desert plants under stress environments.
中文关键词	植物化学性状 ; 叶经济谱 ; 性状梯度分析 ; 荒漠植物
英文关键词	plant chemical trait leaf economics spectrum trait gradient analysis desert plant
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:6238851
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/2XILL650/238186
作者单位	1.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, ;;绿洲生态教育部重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046; 2.绿洲生态教育部重点实验室;;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;;, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046
推荐引用方式 GB/T 7714	张雪妮,李岩,杨晓东,等. 荒漠植物叶片化学性状及其经济谱对水盐变化的响应[J]. 新疆大学,2018,37(5):1299-1306.
APA	张雪妮,李岩,杨晓东,何学敏,&吕光辉.(2018).荒漠植物叶片化学性状及其经济谱对水盐变化的响应.生态学杂志,37(5),1299-1306.
MLA	张雪妮,et al."荒漠植物叶片化学性状及其经济谱对水盐变化的响应".生态学杂志 37.5(2018):1299-1306.