干旱区生态环境知识资源中心(Arid): 内蒙古库布齐沙漠四翅滨藜叶水势研究

Arid

	内蒙古库布齐沙漠四翅滨藜叶水势研究
其他题名	Study on the Leaf Water Potential of Atriplex canescens in Kubuqi Desert of Inner Mongolia
	芦新建; 贺康宁; 巩玉霞; 胡月楠
ISSN	1005-3409
出版年	2008
卷号	15 期号:2 页码:184-188
中文摘要	2006年59月，采用PSYPRO露点水势仪和稳态气孔计Li-1600，在库布齐沙漠测定了从美国引种的四翅滨藜的叶水势和蒸腾速率的日、月动态变化，并与同期测定的杨柴、白刺的叶水势进行了比较，旨在为这一优良灌木树种的推广及管理提供理论依据。结果表明：四翅滨藜叶水势在5月和9月的较高，生长最旺盛的68月较低；一天中，叶水势与气温和太阳辐射强度呈负相关，与大气相对湿度成显著正相关。气温与大气相对湿度的综合作用对叶水势影响显著：在低温高湿时，叶水势最高；在低温低湿和高温高湿时，叶水势均较低；在高温低湿时，叶水势维持在相对较高的水平。在相同条件下，四翅滨藜的叶水势较杨柴和白刺的要低，表明它从干旱土壤中吸收水分的能力比另外两者更强。
英文摘要	The leaf water potential and transpiration rate of Atriplex canescens was measured by PSYPRO water potential apparatus and steady state porometer Li-1600 respectively in Kubuqi desert from May to September in 2006. The daily and seasonal variations of leaf water potential of Atriplex canescens and related factors were analyzed ; also the paper compared it with that of Hedysanm mongolicum and Nitraria tangutorum measured at the same time. The results showed：leaf water potential is higher in May and September than that of in June,July and August. The leaf water potential had a negative correlation to air temperature and solar radiation, and a positive correlation to relative humidity. The study also showed that lower temperature with higher humidity lead to the highest leaf water potential, lower temperature with lower humidity or higher temperature with higher humidity lead to the lowest leaf water potential,higher temperature with lower humidity lead to a relative higher leaf water potential. In the same condition,the water potential of Atriplex canescens is lower than that of Hedysanm mongolicum and Nitraria tangutorurn, which means the ability for absorbing water from dry soil of Atriplex canescens is better than other two species.
中文关键词	四翅滨藜 ; 叶水势 ; 气象因子
英文关键词	Atriplex canescens leaf water potential meteorological factors
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:3285684
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/2XILL650/222811
作者单位	北京林业大学, 水土保持学院水土保持与荒漠化防治国家重点实验室, 北京 100083, 中国
推荐引用方式 GB/T 7714	芦新建,贺康宁,巩玉霞,等. 内蒙古库布齐沙漠四翅滨藜叶水势研究[J]. 北京林业大学,2008,15(2):184-188.
APA	芦新建,贺康宁,巩玉霞,&胡月楠.(2008).内蒙古库布齐沙漠四翅滨藜叶水势研究.,15(2),184-188.
MLA	芦新建,et al."内蒙古库布齐沙漠四翅滨藜叶水势研究".15.2(2008):184-188.