干旱区生态环境知识资源中心(Arid): 准噶尔盆地荒漠区短命植物狭果鹤虱光合与蒸腾特性研究

Arid

	准噶尔盆地荒漠区短命植物狭果鹤虱光合与蒸腾特性研究
其他题名	PHOTOSYNTHESIS AND TRANSPIRATION OF LAPPULA SEMIGLABRA IN THE DZUNGARIA DESERT
	袁素芬; 李薇; 唐海萍
ISSN	0476-0301
出版年	2009
卷号	45 期号:2 页码:188-193
中文摘要	运用LI-6400便携式光合测定系统,对准噶尔盆地荒漠区典型短命植物--狭果鹤虱(Lappula semiglabra)净光合速率、蒸腾速率和水分利用效率特征以及光强和CO_2响应曲线进行了研究,结果表明:狭果鹤虱的净光合速率日变化在生长中后期均是双峰型,而蒸腾速率日变化则是单峰型,属于非蒸腾午休型,生长中期净光合速率为生长后期的2倍;表观量子效率为0.0691,羧化效率为0.0541,与暖温带其他植物相比,狭果鹤虱对低光强和低摩尔分数的CO_2有较高的利用率.
英文摘要	Desert spring ephemerals as pioneer plants play important roles in community succession, biodiversity maintenance, dune stabilization in desert ecosystems. Net photosynthetic rate, transpiration rate, water use efficiency, and photosynthetic response to photosynthesis-active radiation and CO_2 concentration in Lappula semigabra in The Dzungaria Desert were studied with a LI-6400 portable photosynthetic system. Data showed that net photosynthetic rate in Lappula semiglabra had two daily peaks in the middle and later growing seasons, but transpiration rate had only one peak, therefore Lappula semigabra had no transpiration midday depression. Net photosynthesis rate in middle growing season was twice that in late growing season. Apparent quantum yield and carboxylation efficiency in leaves were 0.069 1 and 0.054 1, respectively. Such values are higher than found in other plants in warm temperate zone, therefore Lappula semigabra showed higher utilization rate at lower light radiation and lower CO_2 concentration.
中文关键词	短命植物 ; 净光合速率 ; 蒸腾速率 ; 准噶尔盆地
英文关键词	ephemeral net photosynthetic rate transpiration Dzungaria Basin
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:3528071
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223272
作者单位	北京师范大学,资源学院, 地表过程与资源生态国家重点实验室, 北京 100875, 中国
推荐引用方式 GB/T 7714	袁素芬,李薇,唐海萍. 准噶尔盆地荒漠区短命植物狭果鹤虱光合与蒸腾特性研究[J]. 北京师范大学,2009,45(2):188-193.
APA	袁素芬,李薇,&唐海萍.(2009).准噶尔盆地荒漠区短命植物狭果鹤虱光合与蒸腾特性研究.,45(2),188-193.
MLA	袁素芬,et al."准噶尔盆地荒漠区短命植物狭果鹤虱光合与蒸腾特性研究".45.2(2009):188-193.