| 沙坡头主要建群植物油蒿和柠条的气体交换特征研究 |
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| 引用本文： | 张利平,王新平,刘立超,黄子琛,刘新民.沙坡头主要建群植物油蒿和柠条的气体交换特征研究[J].生态学报,1998,18(2):133-137. |
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| 作者姓名： | 张利平 王新平 刘立超 黄子琛 刘新民 |
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| 作者单位： | 中国科学院兰州沙漠研究所,兰州,730000 |
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| 基金项目： | 国家“八五”攻关,中国科学院沙坡头开放站基金 |
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| 摘 要： | 在自然条件下对沙坡头人工固沙区主要建群植物油蒿和柠条的气体交换特征进行了比较研究。结果表明，油蒿和柠条都具有典型的双峰型光合速率日进程曲线，它们的气孔导度日变化趋势也与净光合速率日变化相一致；在一日内油蒿的气孔导度、净光合速率和蒸腾速率始终大于柠条。油蒿和柠条在８：００￣１０：００光合速率下降的主要决定因素是气孔导度，而在午间（１０：００￣１４：００）和午后（１６：００￣１９：００），光合速率的上
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| 关 键 词： | 油蒿 柠条 气体变换 种间竞争 |
| 收稿时间： | 1996/1/10 0:00:00 |
| 修稿时间： | 7/5/1997 12:00:00 AM |
STUDY ON GAS EXCHANGE CHARACTERISTICS OF MAIN CONSTRUCTIVE PLANTS A.ordosica and C.korshinskii IN SHAPTOU REGION |
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| ZHANG Liping,WANG Xinping,LIU Lichao,HUANG Zichen and LIU Xinmin.STUDY ON GAS EXCHANGE CHARACTERISTICS OF MAIN CONSTRUCTIVE PLANTS A.ordosica and C.korshinskii IN SHAPTOU REGION[J].Acta Ecologica Sinica,1998,18(2):133-137. |
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| Authors: | ZHANG Liping WANG Xinping LIU Lichao HUANG Zichen and LIU Xinmin |
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| Institution: | Institute of Desert Research; Academia Sinica; Lanzhou; China |
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| Abstract: | The gas exchange characteristics of A.ordosica and C.korshinskii grown on Shaptou artificial stabilized dunes,was studied under natural conditions by using a portable Li 6200 gas analysis system.The results indicated that the diurnal courses of photosynthetic rate in A.ordosica and C.korshinskii displayed significantly less symmetrical two peak pattern,with a predominant morning peak on hot,bright sunny day.The diurnal course of stomatal conductance exhibited also a similar diurnal course ... |
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| Keywords: | A ordosica and C korshinskii gas exchange interspecific competition |
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