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引用本文:	高素华,郭建平,康玲玲,王云璋. 我国北方多沙粗沙区常见树种水分利用效率的研究[J]. 中国生态农业学报(中英文), 2006, 14(1): 90-92
	GAO Su-Hua,GUO Jian-Ping,KANG Ling-Ling,WANG Yun-Zhang. Water use efficiency of common tree species in the excessive and thick sandland regions of Northern China[J]. Chinese Journal of Eco-Agriculture, 2006, 14(1): 90-92
DOI：	DOI:10.3724/SP.J.1011.year_id].090

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我国北方多沙粗沙区常见树种水分利用效率的研究
高素华¹, 郭建平¹, 康玲玲², 王云璋²
1.中国气象科学研究院北京 100081;2.黄河水利科学研究院郑州 450003

摘要: 采用Li-6400光合作用系统测定北方多沙粗沙区不同光强条件下常见树种水分利用效率和蒸腾效率结果表明，6个树种水分利用效率依次为刺槐＞山楂＞杨树＞柳树＞榆树＞核桃，2种灌木沙柳水分利用效率高于柠条，但其蒸腾速率却小于柠条，在半旱区水分竞争力强于柠条。

关键词: 水分利用效率光合速率蒸腾速率

中图分类号:

基金项目:黄河水利委员会治黄专项(2002Z031)资助

Water use efficiency of common tree species in the excessive and thick sandland regions of Northern China

GAO Su-Hua¹, GUO Jian-Ping¹, KANG Ling-Ling², WANG Yun-Zhang²

1.Chinese Academy of Meteorological Sciences, Beijing 100081,China;2.Yellow River Institute of Hydraulic Research, Zhengzhou 450003,China

Abstract: The water use efficiency and transpiration rate of common tree species under different radiations were measured by using Li-6400 potable photosynthetic system in the excessive and thick sandland regions of Northern China. The results show that the order of the water use efficiency of 6 tree species is acacia＞haw＞poplar＞osier＞elm＞walnut, and also show that the water use efficiency of S.psammophilais greater than that of C. intermedia, but its transpiration efficiency is far less than that of C. intermedia and the drought-resistant ability of S. psammophila is stronger than that of C. intermedia.

Keyword: Water use efficiency, Photosynthetic rate, Transpiration rate