干旱区生态环境知识资源中心(Arid): 冀北地区6种灌木对干旱胁迫的光合及生理响应

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	冀北地区6种灌木对干旱胁迫的光合及生理响应
其他题名	Photosynthetic and physiological responses of six shrub species to drought dress in northern Hebei Province
	张恒硕; 查同刚; 李肖; 彭栋; 冀晓东; 张志强; 张海江; 薛治国
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2021
卷号	40 期号:2 页码:352-362
中文摘要	探讨冀北地区各灌木种对干旱胁迫的生理生态适应性及抗旱能力,为冀北地区选种育种以及加快植被恢复建设提供理论支持。以4种乡土灌木金露梅(Potent illa fruticosa)、黑沙蒿(Artemisia ordosica)、虎榛子(Ostryopsis davidiana)、胡枝子(Lespedeza bicolor)和2种引种灌木沙棘(Hippophae rhamnoides)、荆条(Vitex negundo var.heterophyll)为研究对象,设置4个水分水平(T1、T2、T3和T4分别为田间持水量的85%5%、70%5%、50%5%和35% 5%),做室内盆栽干旱胁迫实验,观测其生物量、株高变化率、根冠比、叶绿素相对含量(SPAD值)、叶片水势、净光合速率(P_n )、气孔导度(G_s )、蒸腾速率(T_r )与水分利用效率(WUE)等指标。结果表明:(1)受干旱胁迫影响,金露梅和黑沙蒿的根冠比显著增加(P<0.05),生物量以及株高变化率下降较小; 而虎榛子和荆条的生物量和株高变化率受水分限制显著减小(P<0.05)。(2)6种灌木在干旱条件下,叶绿素相对含量、叶水势及光合作用均有不同程度的降低,而WUE随土壤水分的降低变化趋势相异,胡枝子在T3下WUE显著降低(P<0.05),沙棘在T3下WUE显著升高(P<0.05),金露梅在T 4下WUE显著升高(P<0.05)。(3)灌木的生长、形态、生理生态及光合指标与各主成分之间载荷的绝对值均大于0.7,且各灌木种的主成分抗旱综合得分顺序为:金露梅>黑沙蒿>胡枝子>沙棘>虎榛子>荆条,且除了金露梅以外,其他灌木T4水平因子得分均为负值,表现出极强的抗旱性。因此,在冀北干旱地区,应以乡土灌木种金露梅和黑沙蒿为主进行种植,而在水分条件较好的地区则可选择乡土灌木种胡枝子和引入种灌木沙棘作为植被群落恢复物种。
英文摘要	To provide theoretical support for species selection,breeding and vegetation restoration in northern Hebei Province,we assessed the eco-physiological adaptability and drought resistance of different shrub species to drought stress,including four native shrub species(Potentilla fruticosa,Artemisia ordosica,Ostryopsis davidiana,and Lespedeza bicolor)and two introduced shrub species(Hippophae rhamnoides,and Vitex negundo var.heterophylla).Four water levels(85%5%,70%5%,50%5% and 35%5% of field water-holding capacity,designated as T1,T2,T3 and T4,respectively)were set up for indoor pot experiment of drought stress.We measured biomass,plant height change rate,root /shoot ratio,relative chlorophyll content(SPAD value),leaf water potential,net photosynthetic rate(P_n ),stomatal conductance(G_s ), transpiration rate(T_r )and water use efficiency(WUE).The results showed that:(1)Under drought stress,the root /shoot ratio of P.fruticosa and A.ordosica significantly increased(P<0.05),and the decrease of biomass and plant height change rate was limited,while biomass and the change rate of plant height of O.davidiana and V.negundo var.heterophylla were significantly reduced(P<0.05).(2)Under drought stress,the relative content of chlorophyll,leaf water potential and photosynthesis of all the six species decreased in different degrees,while WUE varied with the decreasing water availability.WUE of L.bicolor decreased significantly under T3 treatment(P<0.05),while H.rhamnoides and P.fruticosa increased significantly under T3 treatment(P<0.05)and T4 treatment(P<0.05),respectively.(3)The absolute value of the load between the growth,morphology,eco-physiological and photosynthetic indices of shrubs and the main components was greater than 0.7,and the comprehensive score order of the main components of each shrub species was:P.fruticosa >A.ordosica >L.bicolor >H.rhamnoides >O.davidiana >V.negundo var.heterophylla.Except P.fruticosa,the scores of factors of other shrub species under T4 treatment were negative,suggesting strong drought resistance.The native shrub species P.fruticosa and A.ordosica should be planted in the arid area of northern Hebei Province, while the native shrub species L.bicolor and the introduced shrub species H.rhamnoides can be selected as the vegetation community restoration species in the area with better water condition.
中文关键词	生长形态 ; 光合 ; 干旱胁迫 ; 叶绿素 ; 叶水势
英文关键词	growth form photosynthesis drought stress chlorophyll leaf water potential
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:6898691
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/2XILL650/354419
作者单位	张恒硕, 北京林业大学水土保持学院, 北京 100083, 中国.; 查同刚, 北京林业大学水土保持学院, 北京 100083, 中国.; 李肖, 北京林业大学水土保持学院, 北京 100083, 中国.; 彭栋, 北京林业大学水土保持学院, 北京 100083, 中国.; 冀晓东, 北京林业大学水土保持学院, 北京 100083, 中国.; 张志强, 北京林业大学水土保持学院, 北京 100083, 中国.; 张海江, 张家口市崇礼区林业和草原局, 张家口, 河北 076350, 中国.; 薛治国, 张家口市崇礼区林业和草原局, 张家口, 河北 076350, 中国.
推荐引用方式 GB/T 7714	张恒硕,查同刚,李肖,等. 冀北地区6种灌木对干旱胁迫的光合及生理响应[J]. 北京林业大学,2021,40(2):352-362.
APA	张恒硕.,查同刚.,李肖.,彭栋.,冀晓东.,...&薛治国.(2021).冀北地区6种灌木对干旱胁迫的光合及生理响应.生态学杂志,40(2),352-362.
MLA	张恒硕,et al."冀北地区6种灌木对干旱胁迫的光合及生理响应".生态学杂志 40.2(2021):352-362.