| Biology and Soil |
|
|
|
|
| Effects of Water Supply Condition on Gas Exchange Characteristics of Artemisia halodendron in Horqin Sandy Land |
| LI Xi-meng, FENG Jin-zhao, ZHOU Yun-yun, ZHU Fa-ting |
| College of Life and Environmental Science, Minzu University of China, Beijing 100081, China |
|
|
|
|
Abstract The effects of four water supply levels on gas exchange characteristics of Artemisia halodendron were studied. Results show that the gas exchange characteristics are significantly different under different water supply treatments. Under the water supply level equal to the monthly average precipitation (123 mm), the leaves of A. halodendron have the highest net photosynthetic rate (Pn). Little water supply (61.5 mm) makes the gas exchange ability of leaves to decline, which leads to Pn decrease and water use efficiency (WUE) increase, and the diurnal change of Pn is showed as a double-peak curve with a significant midday depression. The increase of water use efficiency (WUE) means a strong adaptability of this plant to drought stress. In contrast, much water supply (184.5 mm; 246 mm) leads to increases of the gas exchange ability and relative decrease of Pn and WUE, and the diurnal course of Pn is showed as a single-peak curve without midday depression. Compared with Pn under the water supply level equal to the monthly average precipitation, Pn decreases under little water supply, which is attributable to stomatal factor according to views of Farquhar and Sharkey, while the decrease of Pn under much water supply is attributable to non-stomatal factors.
|
|
Received: 01 November 2011
Published: 20 May 2012
|
|
|
| [1]Vitousek P M.Beyond global warming:Ecology and global change[J].Ecology,1994,75:1861-1876.[2]尹航,朴顺姬,王振杰,等.科尔沁沙地差不嘎蒿群落及种群生态特征[J].应用生态学报,2006,17(7):1169-1173.[3]赵玮,张铜会,刘新平,等.差不嘎蒿灌丛土壤和根系含水量对降雨的响应[J].生态学杂志,2008,27(2):151-156.[4]刘士刚,朴顺姬,安卯柱,等.不同类型沙地上差不嘎蒿细根的分布状态[J].植物生态学报,2003,27(5):684-689.[5]朴顺姬,王振杰,颜秀灵,等.科尔沁沙地差不嘎蒿种群生态位适宜度分析[J].植物生态学报,2006,30(4):593-600.[6]赵丽娅,李兆华,赵锦慧,等.流动沙丘先锋灌木差不嘎蒿的种子散布格局[J].西北植物学,2005,25(9):1821-1826.[7]李玉霖,张铜会,崔建垣.科尔沁沙地农田玉米耗水规律研究[J].中国沙漠,2002,22(4):354-358.[8]赵哈林,周瑞莲,张铜会,等.科尔沁沙地植被的统计学特征与土地沙漠化[J].中国沙漠,2004,24(3):274-278.[9]Berry J A,Downton W J S.Environmental regulation of photosynthesis[M]//Photosynthesis:Development,carbon metabolism and plant productivity,Vol.Ⅱ.New York:Academic Press,1982:263-343.[10]Fischer R A,Turner N C.Plant productivity in the arid and semiarid zones[J].Annual Review of Plant Physiology,1978,29:227-317.[11]Dubinsky Z,Fertelson J,Manzerall D C.Listening to phytoplankton:Measuring biomass and photosynthesis by photoacouatics[J].Journal of Phycology,1998,34(5):888-892.[12]Palmavist K,Sundberg B.Light use efficiency of dry matter gain in five macro-lichens:Relative impact if microclimate conditions and species specific traits[J].Plant,Ceil & Environment,2000,23(1):1-14.[13]Saitou K,Inamura R,Ishihara K.Relationship between leaf movement of trifoliolate compound leaf and environmental factors in the soybean canopy.2.Effects of growth and environmental conditions on diurnal changes of leaf movement[J].Japanese Journal of Crop Science,1994,63:254-260.[14]Nobel P S.Root distribution and seasonal production in the northwestern Sonaran Desert for a C3 shrub,a C4 bunchgrass,and a CAM leaf succulent[J].American Journal of Botany,1997,84:949-955.[15]何维明,马风云.水分梯度对沙地柏幼苗荧光特征和气体交换的影响[J].植物生态学报,2000,24(5):630-634.[16]温达志,周国逸,张德强,等.四种禾本科牧草植物蒸腾速率与水分利用效率的比较[J].热带亚热带植物学报,2000,(增刊Ⅲ):67-76.[17]Farquhar G D,Sharkey T D.Stomatal conductance and photosynthesis[J].Annual Review of Plant Physiology,1982,33:317-345.[18]贾荣亮,周海燕,谭会娟,等.超旱生植物红砂与珍珠光合生理生态日变化特征初探[J].中国沙漠,2006,26(4):631-636.[19]郭宏宇,杨劼,郭景山,等.西鄂尔多斯铁路防护林柠条锦鸡儿和沙冬青对不同管护措施的生理生态响应[J].中国沙漠,2005,25(1):81-87.[20]刘长利,王文全,崔俊茹,等.干旱胁迫对甘草光合特性与生物量分配的影响[J].中国沙漠,2006,26(1):142-145.[21]柯世省.水分胁迫下夏蜡梅光合作用的气孔和非气孔限制[J].浙江林业科技,2006,26(6):1-5.[22]姚庆群,谢贵水.干旱胁迫下光合作用的气孔限制与非气孔限制[J].热带农业科学,2005,25(4):80-85.[23]郭晓云,杨允菲,李建东.松嫩平原不同旱地生境芦苇的光合特性研究[J].草业学报,2003,12(3):16-21.[24]Sam O,Jerdz E,Dell-Amico J,et al.Water stress induced changes in anatomy of tomato leaf epidermis[J].Biologia Plantarum,2000,43:275-277.[25]张淑勇,周泽福,张光灿,等.半干旱黄土丘陵区天然次生灌木山桃与山杏叶片气体交换参数日动态差异[J].生态学报,2009,29(1):499-507.[26]张利平,王新平,黄子琛,等.沙漠地区沙冬青的气体交换特征研究[J].西北植物学报,1998,18(2):207-213.[27]Turner N C,Burch G J.The role of water in plants[M]//Teare I D,Peet M M.Crop-Water Relations.New York:Wiley-Interscience,1983:73-126.[28]罗亚勇,赵学勇,黄迎新,等.植物水分利用效率及其测定方法研究进展[J].中国沙漠,2009,29(4):648-655.[29]Jensen M E.Water consumption by agricultural plant[M]//Kozlowski T.Water Deficit and Plant Growth.New York:Academic Press,1976.[30]Heitholt J J.Water use efficiency and dry matter distribution in nitrogen-and water-stressed winter wheat[J].Agronomy Journal,1989,81:464-469.[31]Midgley G F,AranibarJ N,Mantlana K B,et al.Photosynthetic and gas exchange characteristics of dominant woody plants on a moisture gradient in an African savanna[J].Global Change Biology,2004,10(3):309-317. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2012, Vol. 32 
