| Biology and Soil |
|
|
|
|
| Research on Characteristics of Water Use Efficiency Variations of Populus euphratica during the Growing Season in Extremely Arid Region of China |
| CAO Sheng-kui1,2, FENG Qi3, SI Jian-hua3, CHANG Zong-qiang3, CAO Guang-chao1,2, CHEN Ke-long1,2 |
1.Ministry of Education Key Laboratory of Qinghai-Tibet Plateau Resources and Environment, Qinghai Normal University, Xining 810008, China;
2.College of Life and Geography Sciences, Qinghai Normal University Xining 810008, China;
3.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
|
|
|
|
Abstract In extremely arid environment, whether plants can adapt to the extreme environment or not depends mainly on whether they can finely harmonize the relation between carbon assimilation and water evapotranspiration. That is, water use efficiency is a key factor. We studied the variations of foliar δ13C values, water use efficiency and their affecting factors during the plant growing season. Results showed that the foliar δ13C values ranged from -28.16‰±0.23‰ to -26.82‰±0.22‰, and the means were -27.70‰±0.13‰. The monthly water use efficiency of P. euphratica ranged from (84.81±2.23)μmolCO2·mmol-1H2O to (70.97±2.40)μmolCO2·mmol-1H2O, and the mean was (75.69±1.31)μmolCO2 mmol-1H2O. The water use efficiency of P. euphratica decreased continuously during the growing season. The highest value of water use efficiency appeared in May, and the lowest value appeared in July. The causes for this trend were reduction of photosynthetic rates resulting from foliar nutrimental deficit and variations of stomata conductance caused by air temperature raising, soil content water decreasing and groundwater level falling.
|
|
Received: 29 October 2011
Published: 20 May 2012
|
|
|
Cite this article:
CAO Sheng-kui, FENG Qi, SI Jian-hua, CHANG Zong-qiang, CAO Guang-chao, CHEN Ke-long. Research on Characteristics of Water Use Efficiency Variations of Populus euphratica during the Growing Season in Extremely Arid Region of China. JOURNAL OF DESERT RESEARCH, 2012, 32(3): 724-729.
URL:
http://www.desert.ac.cn/EN/ OR http://www.desert.ac.cn/EN/Y2012/V32/I3/724
|
| [1]Condon A G,Farquhar G D,Richards R A.Genotypic variation in carbon isotope discrimination and transpiration efficiency in wheat:Leaf gas exchange and whole plant studies[J].Australian Journal of Plant Physiology,1990,17:9-22.[2]吴征锰.中国植被[M].北京:科学出版社,1980:43-65.[3]冯起,司建华,席海洋,等.极端干旱区天然植被耗水规律试验研究[J].中国沙漠,2008,28(6):1095-1103.[4]司建华,冯起,张小由.极端干旱区胡杨水势及影响因子研究[J].中国沙漠,2005,25(4):505-510.[5]司建华,冯起,张小由,等.极端干旱区荒漠河岸林胡杨生长季树干液流变化[J].中国沙漠,2007,27(3):442-447.[6]苏培玺,张立新,杜明武,等.胡杨不同叶形光合特征、水分利用效率及其对加富CO2的响应[J].植物生态学报,2003,27(1):34-40.[7]罗青红,李志军,伍维模.胡杨、灰叶胡杨光合及叶绿素荧光特性的比较研究[J].西北植物学报,2006,26(5):983-988.[8]常宗强,冯起,苏永红.额济纳绿洲胡杨的光合特征及其对光强和CO2浓度的响应[J].干旱区地理,2006,29(4):496-502.[9]曾凡江,张希明,Andrea Foetaki.新疆勒策绿洲胡杨水分生理特性研究[J].干旱区研究,2002,19(2):26-30.[10]邓雄,李小明,张希明,等.塔克拉玛干4种荒漠植物气体交换与环境因子的关系初探[J].应用与环境生物学报,2002,8(5):445-452.[11]苏永红,朱高峰,冯起,等.蒸发条件下一维垂向非饱和土壤水分运动的数值模拟——以额济纳荒漠河岸胡杨林为例[J].中国沙漠,2009,29(2):236-240.[12]Cao S K,Feng Q,Su Y H,et al.Relationships between foliar carbon isotope discrimination with potassium concentration and ash content of the riparian plants in the extreme arid region of China[J].Photosynthetica,2009,47:499-509.[13]Farquhar G D,Ehleringer J R,Hubick K T.Carbon isotope discrimination and photosynthesis[J].Annual Review of Plant Physiology and Plant Molecular Biology,1989,40:503-537.[14]Farquhar G G,Hubick K T,Condon A G,et al.Carbon isotope fractionation and plant water use efficiency[M]//Stable Isotope in Ecological Research.New York:Springer Verlag,1989:21-40.[15]OLeary M H.Carbon isotope fractionation in plants[J].Phytochemistry,1981,20:553-567.[16]Hall A E,Richards R A,Condon A G,et al.Carbon isotope discrimination and plant breeding[J].Plant Breed Reviews,1994,12:81-113.[17]Garten C T,Taylor G E.Foliar δ13C with in a temperate deciduous forest:Spatial,temporal,and species sources of variation[J].Oecologia,1992,90:1-7.[18]严昌荣,韩兴国,陈灵芝,等.温暖带落叶林主要植物叶片中δ13C值的种间差异及时空变化[J].植物学报,1998,40(9):853-859.[19]刘海燕,李吉跃,赵燕,等.沙柳稳定碳同位素值的特点及其水分利用效率[J].干旱区研究,2008,25(4):514-518.[20]Brugnoli E,Scartazza A,Lauteri M,et al.Carbon isotope discrimination in structural and non-structural carbohydrates in relation to productivity and adaptation to unfavorable conditions[M]//Griffiths H.Stable Isotopes Integration of Biological,Ecological and Geochemical Processes.Oxford:Bios Scientific Publishers Ltd.,1998:133-146.[21]Morecroft M D,Woodward F I.Experimental investigations in the environmental determination of δ13C at different altitudes[J].Journal of Experimental Botany,1990,41:1303-1308.[22]Brown R H,Byrd G T.Relationships between specific leaf dry weight and mineral concentration among genotypes[J].Field Crops Research,1996,54:19-28.[23]Farquhar G D,OLeary M H,Berry J A.On the relationship between carbon isotope discrimination and the intercellular carbon dioxide concentration in leaves[J].Australian Journal of Plant Physiology,1982,9:121-137.[24]李相博,陈践发,张平中,等.青藏高原(东北部)现代植物碳同位素组成特征及其气候信息[J].沉积学报,1999,17(2):325-329.[25]Ehleringer J R,Rundel P W,Palma B,et al.carbon isotope ratios of Atacama desert plants reflect hyperaridity of region in northern Chile[J].Revista Chilena de Historia Natural,1998,71:79-86.[26]Francey R J,Gifford R M,Sharkey T D,et al.Physiological influences on carbon isotope discrimination in huon pine (Lagarostrobus franklinii)[J].Oecologia,1985,66:211-218.[27]Korner C H,Farquhar G D,Roksaudic Z.A global survey of carbon isotope discrimination in plants from high altitude[J].Oecologia,1988,74:623-632.[28]Sparks J P,Ehleringer J R.Leaf carbon isotope discrimination and nitrogen content for riparian trees along elevational transects[J].Oecologia,1997,109:362-367. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2012, Vol. 32 
