干旱区生态环境知识资源中心(Arid): 黄土高原中部三种典型绿化植物光合特性的季节变化

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	黄土高原中部三种典型绿化植物光合特性的季节变化
其他题名	Seasonal variation of photosynthetic characteristics of three typical green plant species in central Loess Plateau
	刘旻霞; 夏素娟; 穆若兰; 南笑宁; 李全弟; 蒋晓轩
来源期刊	生态学杂志
ISSN	1000-4890
出版年	2020
卷号	39 期号:12 页码:4098-4109
中文摘要	为探讨黄土高原中部绿化植物的光合生理特性,了解不同季节植物的光合生理适应机制,运用Li-6400XT便携式光合仪,对兰州北山3种典型绿化树种山杏 (Prunus sibirica)、刺槐(Robinia pseudoacacia)及新疆杨(Populus alba)在不同季节的光合响应曲线及光合日变化进行了测定。结果表明:(1)山杏和刺槐净光合速率(P_n )日变化呈单峰曲线,新疆杨P_n日变化呈不对称的双峰曲线。(2)山杏、刺槐及新疆杨均在夏季有较高的最大净光合速率(8.29、8.79、12.94 mumol·m~(-2)·s~(-1) ),秋季有较高的表观量子效率(0.058、0.032、 0.073 mumol·mumol~(-1) )和较低的光补偿点(8.69、3.44、4.72 mumol·m~(-2)·s~(-1) )及暗呼吸速率(0.48、0.11、0.33 mumol·m~(-2)·s~(-1) ),光饱和点在季节间有显著性差异。(3)水分利用效率整体表现为山杏和刺槐在秋季较高(1.97、4.66 mumol·mmol~(-1) ),新疆杨夏季较高(7.29 mumol·mmol~(-1) )。(4)新疆杨净光合速率及水分利用效率较高,对光的适应范围较广,刺槐利用强光的能力较强,水分利用效率居中,山杏耐荫性较高,水分利用效率较低。( 5)通径分析表明,在春季大气湿度(RH)、土壤温度(T_s )、大气温度(T_a )均对3种植物P_n起抑制作用;夏季中山杏和刺槐与春季相同,所研究的4种环境因子均对新疆杨P_n起促进作用;在秋季3种植物P_n均表现为受到T_ s正促进影响,受到PAR、RH、T_a抑制作用。综上,3种绿化树种随季节变化表现出积极的生长模式,其中新疆杨对生境的适应性强于山杏和刺槐。本研究结果可为半干旱区造林绿化树种的引种栽培和应用推广提供依据。
英文摘要	To explore the photosynthetic physiological characteristics of greening tree species and understand the mechanisms of photosynthetic physiological adaptation of plants in different seasons in the central Loess Plateau,photosynthetic response curve and diurnal variation of three typical tree species (Prunus sibirica,Robinia pseudoacacia and Populus alba)in different seasons were measured using Li-6400XT portable photosynthetic instrument. The results showed that: (1)The diurnal variation of net photosynthetic rate (P_n )of P. sibirica and R. pseudoacacias showed a single peak curve,while that of P. alba showed an asymmetric double peak curve. (2)P. sibirica,R. pseudoacacia,and P. alba had higher maximum photosynthetic rate (8.29, 8.79,12.94 mumol·m~(-2)·s~(-1) )in summer,and higher apparent quantum efficiency (0.058, 0.032,0.073 mumol·mumol~(-1) ),lower light compensation point (8.69,3.44,4.72 mumol·m~(-2)·s~(-1) )and dark respiration rate (0.48,0.11,0.33 mumol·m~(-2)·s~(-1) )in autumn. There were significant seasonal variations in light saturation point. (3)Water use efficiency of P. sibirica and R. pseudoacacia was higher in autumn (1.97,4.66 mumol·mmol~(-1) ),but that of P. alba was higher in summer (7.29 mumol·mmol~(-1) ). (4)P. alba had higher net photosynthetic rate and water use efficiency,with a wide range of light adaptation. R. pseudoacacia had a strong ability to use strong light,but with moderate water use efficiency. P. sibirica had higher shade tolerance and lower water use efficiency. (5)Results of path analysis showed that,relative humility (RH),soil temperature (T_s )and air temperature (T_a )all inhibited P_n of the three species in spring. The above-mentioned environmental factors showed similar effects on apricot and R. pseudoacacia in summer to that in spring. The four environmental factors examined here promoted the P_n of P. alba; in autumn. P_n of the three species was positively promoted by T_s but inhibited by PAR,RH and T_a . In general,those three tree species showed a positive growth pattern with seasonal changes,among which the adaptability of P. alba was stronger than that of P. sibirica and R. pseudoacacia. Our results provide theoretical basis for the introduction,cultivation,and application of afforestation tree species in arid and semi-arid areas.
中文关键词	兰州北山 ; 绿化树种 ; 光合日变化 ; 生理参数 ; 通径分析
英文关键词	Northern Mountain of Lanzhou greening tree species diurnal variation of photosynthesis physiological parameter path analysis
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:6854812
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353807
作者单位	刘旻霞, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国. 夏素娟, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国. 穆若兰, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国. 南笑宁, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国. 李全弟, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国. 蒋晓轩, 西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国.
推荐引用方式 GB/T 7714	刘旻霞,夏素娟,穆若兰,等. 黄土高原中部三种典型绿化植物光合特性的季节变化[J],2020,39(12):4098-4109.
APA	刘旻霞,夏素娟,穆若兰,南笑宁,李全弟,&蒋晓轩.(2020).黄土高原中部三种典型绿化植物光合特性的季节变化.生态学杂志,39(12),4098-4109.
MLA	刘旻霞,et al."黄土高原中部三种典型绿化植物光合特性的季节变化".生态学杂志 39.12(2020):4098-4109.