干旱区生态环境知识资源中心(Arid): 灌溉条件下3种沙生灌木光合特性及其与生态因子的关系

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	灌溉条件下3种沙生灌木光合特性及其与生态因子的关系
其他题名	Photosynthetic Characteristics and Relationship with the Ecological Factors of Three Sandy Shrubs under Irrigation Condition
	罗青红; 吉小敏; 宁虎森; 雷春英
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2014
卷号	34 期号:11 页码:2296-2302
中文摘要	以沙地种植的沙地灌木桑(灌木桑)、红花罗布麻(红麻)和沙木蓼幼苗为试验材料,活体测定了其叶片的光合生理生态参数日进程、光合-光强响应及光合-CO_2浓度响应特征,分析了净光合速率(P_n)与主要生态因子的关系。结果表明:(1)灌木桑、红麻和沙木蓼的净光合速率日动态曲线分别呈双峰型、单峰型和持续下降型。 (2)沙木蓼的水分利用效率(WUE)和光能利用效率(QUE)明显高于红麻及灌木桑;灌木桑对光照强度具有强的生态适应幅,而红麻利用光强的范围较窄,光合潜能不高,沙木蓼的最大净光合速率(P_(max))最高,其植株的光合能力也最强;红麻具有最高的CO_2补偿点和饱和点,同时具有较小的P_(max)值。(3)气温(Ta)对灌木桑和红麻P_n的直接、间接影响均较大,而水汽压亏缺(VPD)偶联T_a对沙木蓼、红麻的P_n有较大的间接影响。研究认为,依据各灌木的光合生理适应性特征,沙木蓼可在干旱沙区光照较强的阳坡等区域种植,灌木桑可选择在绿洲与荒漠的过渡带造林,红麻则可在光强较弱的阴坡或坡间低地造林。
英文摘要	In this paper,diurnal dynamics of photosynthesis physical-ecological characters,P_n-PARand P_n-Ciresponse curves were measured,and the relationship between P_n and main ecological factors was analyzed in three young sandy plants seedlings.The results showed that:(1) Diurnal dynamics curves of net photosynthetic rate (P_n) of Morus alba,Apocynum lancifolium and Atraphaxis bracteata appeared bimodalpeak, single-peak and continued to decline types,respectively.(2) Water utility efficiency (WUE) and light utility efficiency (QUE) of A.bracteata was higher than that of A.lancifoliumand M.albas.M.alba has a strong ecological adaptation range for light intensity,the range of using light intensity of A.lancifoliumis relatively narrow,so photosynthetic potential is not high.The maximum net photosynthetic rate (P_(max)) of A.bracteata was the highest,which suggested its photosynthetic capacity was higher also,A.lancifolium has the highest CO_2 compensation point (CCP) and saturation point (CSP),at the same time,with smaller P_(max).(3) The atmospheric temperature (T_a) has greater direct and indirect impact on P_n of M.alba and A.lancifolium, and vapor pressure deficit (VPD) coupling T_a had larger indirect effects on P_n of A.bracteataand A.lancifolium.To sum up,in terms of photosynthetic physiological adaptability.As preventing and desertification controling plant material,A.bracteata can be planted in the sandy slope with full light, M.albain the transition zone of oasis and desert afforestation,and A.lancifoliumin the sandy slope with weak light condition.
中文关键词	净光合速率 ; 日动态 ; 响应曲线 ; 生态因子
英文关键词	net photosynthetic rate diurnal dynamic response curve ecological factor
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:5300241
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231918
作者单位	新疆林业科学院造林治沙研究所, 乌鲁木齐, 新疆 830063, 中国
推荐引用方式 GB/T 7714	罗青红,吉小敏,宁虎森,等. 灌溉条件下3种沙生灌木光合特性及其与生态因子的关系[J],2014,34(11):2296-2302.
APA	罗青红,吉小敏,宁虎森,&雷春英.(2014).灌溉条件下3种沙生灌木光合特性及其与生态因子的关系.西北植物学报,34(11),2296-2302.
MLA	罗青红,et al."灌溉条件下3种沙生灌木光合特性及其与生态因子的关系".西北植物学报 34.11(2014):2296-2302.