[1]金华,玉米提·哈力克*,阿丽亚·拜都热拉,等. 阿克苏8种常见树种叶片水分利用效率特征[J].西北林学院学报,2015,30(02):44-50.[doi:doi:10.3969/j.issn.1001-7461.2015.02.08]
　JIN Hua,UMUT Halik*,ALIYA Baidurela,et al. Characteristics of Leaf Water Use Efficiency of Eight Common Tree Species in Aksu[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2015,30(02):44-50.[doi:doi:10.3969/j.issn.1001-7461.2015.02.08]
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 阿克苏8种常见树种叶片水分利用效率特征()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第30卷
期数:
2015年02期
页码:
44-50
栏目:
出版日期:
2015-03-30

文章信息/Info

Title:
 Characteristics of Leaf Water Use Efficiency of Eight Common Tree Species in Aksu
文章编号:
1001-7461(2015)02-0044-07
作者:
 金华1; 2; 玉米提·哈力克1; 2; 3*; 阿丽亚·拜都热拉1; 2; 阿依古丽·艾力亚斯1; 2; 艾克热木·吾布力1; 2
 （1. 新疆大学 资源与环境科学学院，新疆 乌鲁木齐 830046；2. 新疆绿洲生态教育部重点实验室，新疆 乌鲁木齐 830046；3. 德国艾希斯塔特-因戈尔斯塔特大学 地理系，艾希斯塔特 85072）
Author(s):
 JIN Hua1; 2;  UMUT Halik1; 2; 3*;  ALIYA Baidurela1; 2;  AYIGULI Ailiyasi1; 2;  AIKEREMU Wubuli1; 2
 (1. Institute of Resources and Environmental Science, Xinjiang University, Urumqi, Xinjiang 830046, China; 2.Key Laboratory of Oasis Ecology, Ministry of Education, Xinjiang University, Urumqi, Xinjiang 830046, China; 3. Eberswalde University for Sustainable Development, Eberswalde 85072, Germany)
关键词:
 ; 水分利用效率; 光合生理; 干旱区绿洲; 树种; 太阳高度角
Keywords:
 ; water use efficiency;  photosynthetic factor;  oasis;  tree species;  solar altitude angle
分类号:
S718.43
DOI:
doi:10.3969/j.issn.1001-7461.2015.02.08
文献标志码:
A
摘要:
 水分利用效率是植物生存的关键因子，客观反映植物对水分利用状况。用Li-6400以气体交换法测算叶片水分利用效率，探明阿克苏8种常见树种水分利用特征。结果表明，8种乔木水分利用效率随日太阳高度角（13°、35°、57°、71°、60°、39°、16°）变化趋势呈双峰型。瞬时水分利用效率（WUE）分别为：3.27、3.53、4.46、3.62、4.49、3.88 mmol·mol-1和3.18 mmol·mol-1；不同树种水分利用效率存在显著差异，以核桃和苹果最高；瞬时水分利用效率（WUE）与潜在水分利用效率（WUEi）在绿化树种和果树中分别表现出不同相关性，总体呈负相关（R2=-0.872、-0.723，p<0.05）；7种影响因子（Pn、E、Gs、Ci、T、RH、Vpdl）与水分利用效率间存在相关关系，光合速率对水分利用效率影响最显著，气孔导度和蒸腾速率相互协同影响水分利用效率。大气湿度、胞间CO2浓度和饱和蒸汽压亏缺通过影响光合速率和气孔导度影响水分利用效率。在干旱区温度对水分利用效率影响复杂，需进一步研究。
Abstract:
 Water use efficiency is one of the most important factors of plants’ surviving, and it reflects the status of water use. In this paper, water use efficiency (WUE) of plant leaves were measured by using Li-6400 in Aksu, Xinjiang, China. The results demonstrated that WUE of sll the measured tree species showed a double-peak curve with solar altitude angles (13°, 35°, 57°, 71°, 60°, 39°, 16°) in daytime, in which the corresponding values of instantaneous WUE were 3.27, 3.53, 4.46, 3.62, 4.49, 3.88 mmol·mol-1, and 3.18 mmol·mol-1, respectively. There were significant differences in WUE among different tree species, the highest for Juglans regia and Malus pumila. The greening trees and fruit trees had different correlations between instantaneous and potential WUE(R2=-0.72, -0.87, p<0.05). There was correlationship between WUE and 7 influencing factors, such as Pn, E, Gs, Ci, T, RH, and Vpdl. Photosynthetic rate had the most significant effect on WUE. Stomatal conductance and transpiration rate influenced on WUE synergistically. Atmospheric humidity, intercellular CO2 concentration and the saturated vapor pressure influenced WUE through affecting the photosynthetic rate and stomatal conductance. Temperature effects on WUE in arid areas was more complex and needed to be further studied.

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备注/Memo

备注/Memo:
 收稿日期：2014-07-26修回日期：2014-09-24
基金项目：国家自然科学基金项目 (31270742)；德国科技部SuMaRiO项目 (01LL0918C)。
作者简介：金华，女，硕士研究生，研究方向：干旱区植物生态学和城市生态学。E-mail: jinhuabaiyu@163.com
*通信作者：玉米提·哈力克，男，教授，博士，博士导师，研究方向：干旱区流域生态恢复与重建、植物生态学和城市生态学。E-mail: halik@xju.edu.cn
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