干旱区生态环境知识资源中心(Arid): 沙冬青等3种沙生植物气体交换特征

Arid

	沙冬青等3种沙生植物气体交换特征
其他题名	The characteristics of gas exchange of 3 psammophytes
	何炎红 1; 田有亮 1; 李建 1; 王海燕 2
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2014
卷号	28 期号:7 页码:144-149
中文摘要	在乌兰布和沙漠使用LI-6400植物光合测定系统和压力室同步测定了白刺、沙冬青和油蒿气体交换和水势等的日变化和月变化。白刺、沙冬青和油蒿气体交换日进程变化呈单峰、双峰和多峰。白刺的水势、光合速率、蒸腾速率的日变化曲线多呈单峰型,一般在11:00达到高峰。油蒿水势和光合速率的日变化多呈单峰型,其峰值分别出现在13:00和17:00,蒸腾速率多呈双峰型,峰值分别出现在11:00和15:00。沙冬青的水势、光合速率、蒸腾速率均呈双峰型。白刺光合速率和蒸腾速率都大于沙冬青和油蒿,研究表明沙冬青和油蒿对于环境变化具有较强的敏感性,而白刺对于环境变化具有较强的忍耐性。被试3种植物水分利用效率相对都较低,其排序为:油蒿(2.83mumol CO_2·mmol~(-1)H_2O)>沙冬青(2.59mumol CO_2·mmol~(-1)H_2O)>白刺(1.96mumol CO_2·mmol~(-1)H_2O)。研究进一步说明较低的水分利用效率是沙生植物长期适应干旱高温气候环境的结果。
英文摘要	The daily and monthly changes of gas exchange and water potential of Nitraria tangutorum,Ammopiptanthus mongolicus and Artcmisia ordsica were measured by Li - 6400 and pressure chamber in Ulan Buh Desert. The daily changes of gas exchange of Nitraria tangutorum,Ammopiptanthus mongolicus and Artcmisia ordsica appeared single peak,double peak and multi - peak. The daily changes of water potential,photosynthetic rate and transpiration rate of Nitraria tangutorum appeared single peak,and the peak emerged at 11: 00. The daily change of water potential and photosynthetic rate of Artcmisia ordsica showed single peak and appeared at 13: 00 and 17: 00 separately. However,the transpiration rate was double peak and appeared at 11: 00 and 15: 00. The water potential,photosynthetic rate and transpiration rate of Ammopiptanthus mongolicus showed double peak. The photosynthetic rate and transpiration rate of Nitraria tangutorum were more than the value of Ammopitanthus mongolicus and Artcmisia ordsica. The research showed Ammopitanthus mongolicus and Artcmisia ordsica were sensitive to environment,but Nitraria tangutorum has more tolerant to environment. The water use efficiency of 3 species were relatively lower,and the order was Artcmisia ordsica( 2. 83mumol CO_2·mmol ~(- 1) H_2O) > Ammopiptanthus mongolicus( 2. 59mumol CO_2·mmol ~(- 1) H_2O) > Nitraria tangutorum( 1. 96mumol CO_2·mmol ~(- 1) H_2O) . The research further illustrated that the lower water use efficiency of psammophytes was the result of long - term adaptation to drought and high temperature.
中文关键词	沙生植物 ; 气体交换 ; 日进程 ; 月进程 ; 适应性
英文关键词	psammophyte gas exchange daily change monthly change adaptation
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:5184722
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231229
作者单位	1.内蒙古农业大学, 呼和浩特, 内蒙古 010019, 中国; 2.内蒙古固体废物管理中心, 呼和浩特, 内蒙古 010012, 中国
推荐引用方式 GB/T 7714	何炎红,田有亮,李建,等. 沙冬青等3种沙生植物气体交换特征[J]. 内蒙古农业大学,2014,28(7):144-149.
APA	何炎红,田有亮,李建,&王海燕.(2014).沙冬青等3种沙生植物气体交换特征.干旱区资源与环境,28(7),144-149.
MLA	何炎红,et al."沙冬青等3种沙生植物气体交换特征".干旱区资源与环境 28.7(2014):144-149.