干旱区生态环境知识资源中心(Arid): 不同生境胡杨叶片解剖特征及其适应可塑性

Arid

	不同生境胡杨叶片解剖特征及其适应可塑性
其他题名	Anatomical characteristics and adaptability plasticity of Populus euphratica in different habitats
	钟悦鸣 1; 董芳宇 1; 王文娟 1; 王健铭 1; 李景文 1; 吴波 2; 贾晓红 2
来源期刊	北京林业大学学报
ISSN	1000-1522
出版年	2017
卷号	39 期号:10 页码:53-61
中文摘要	本文对敦煌西湖荒漠湿地与内蒙古额济纳绿洲河岸林的胡杨叶片进行解剖结构数量化研究,比较了两种不同生境中胡杨叶片的适应对策。结果表明:上、下角质层厚度与叶片结构紧密度在两种生境中无显著差异,除叶片结构疏松度外,荒漠湿地中的胡杨叶片各解剖结构厚度及面积等特征显著大于绿洲河岸林;0~30cm土壤全氮含量对荒漠湿地与绿洲河岸林的胡杨叶片解剖结构特征具有显著影响,而0~30cm土壤全钾含量对两种生境中的胡杨叶片解剖结构发育均无显著影响;荒漠湿地中的胡杨叶片各结构变异系数及多数结构的可塑性指数均大于绿洲河岸林,其中主脉木质部面积的变异系数和可塑性指数在两种生境中均较大。与生境中物种丰富度更高的额济纳绿洲河岸林相比,敦煌西湖荒漠湿地的胡杨以更大的叶片解剖结构厚度或面积等特征来适应更加恶劣的生境。叶片解剖结构的可塑性是胡杨适应荒漠区脆弱生态系统的重要方式和策略。
英文摘要	The study of Populus euphratica in desert-wetland in Dunhuang and oasis-riparian forest in Ejina,Inner Mongolia of northern China was carried out by the quantitative analysis of the anatomical structure. We compared the adaptation strategies of Populus euphratica in two habitats and the results showed that: there was no significant difference in the thickness of the upper and lower stratum corneum and the compactness of the leaf structure in the two habitats. In addition to the leaf structure porosity,the thickness and area of the anatomical structures of the Populus euphratica leaves in desert-wetland were significantly larger than those in oasis-riparian forest. 0-30cm soil total nitrogen content had a significant effect on the anatomical structure of Populus euphratica in both desert-wetland and oasis-riparian forest,and 0-30cm soil total potassium had no significant effect on the leaf anatomical structure of Populus euphratica in the two habitats. The coefficient of variation of the structure and the plasticity index of the majority of the leaves in desert-wetland were larger than those of the oasis-riparian forest,and the coefficient of variation and plasticity index of the xylem area of the main veins were larger in both habitats. Compared with oasis-riparian forest,Populus euphratica in desert-wetland is adapted to the dryer habitat with larger leaf anatomical thickness or area. The plasticity of leaf anatomical structure is an important way and strategy for Populus euphratica to adapt to vulnerable ecosystems in desert areas.
中文关键词	胡杨 ; 叶片 ; 解剖结构 ; 可塑性 ; 土壤全氮
英文关键词	Populus euphratica leaf anatomical structure plasticity soil total nitrogen
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6095097
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235608
作者单位	1.北京林业大学林学院; 2.中国林业科学研究院荒漠化研究所
推荐引用方式 GB/T 7714	钟悦鸣,董芳宇,王文娟,等. 不同生境胡杨叶片解剖特征及其适应可塑性[J]. 北京林业大学,2017,39(10):53-61.
APA	钟悦鸣.,董芳宇.,王文娟.,王健铭.,李景文.,...&贾晓红.(2017).不同生境胡杨叶片解剖特征及其适应可塑性.北京林业大学学报,39(10),53-61.
MLA	钟悦鸣,et al."不同生境胡杨叶片解剖特征及其适应可塑性".北京林业大学学报 39.10(2017):53-61.