| 准噶尔盆地南缘干旱条件下胡杨、梭梭和柽柳水势对比研究 |
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| 引用本文： | 占东霞,庄丽,王仲科,徐智全,田中平,孙书秒.准噶尔盆地南缘干旱条件下胡杨、梭梭和柽柳水势对比研究[J].新疆农业科学,2011,48(3):544-550. |
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| 作者姓名： | 占东霞 庄丽 王仲科 徐智全 田中平 孙书秒 |
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| 作者单位： | 石河子大学生命科学学院,新疆石河子,832000 |
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| 基金项目： | 国家自然科学基金，石河子大学项目 |
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| 摘 要： | 目的]以150团丰收林的三种荒漠植被(胡杨、梭梭和柽柳)为对象,比较三种植物水势变化规律差异,探讨干旱环境下植物水势的变化特点.方法]用露点水势仪测定3种植物水势,结合2008～2009年3种植物的水势及地下水位监测数据,分析该干旱区3种荒漠植被的水势及地下水位变化规律,探讨在地下水位变化下植物水势的响应.结果]2009年自然胡杨叶、茎水势明显高于2008年的胡杨水势;人工胡杨叶、茎水势日变化幅度不大,整个趋势呈直线型,且低于2008年的水势;2008和2009年梭梭同化枝水势日变化趋势基本一致,呈双峰型;2009年柽柳茎水势日变化略高于2008年的水势,但是两者日变化趋势相差不大.从150团丰收林2008～2009年地下水位月变化来看,整体呈下降趋势,但变化幅度不显著.结论]3种植物的水势比较结果为:柽柳<梭梭<自然生长胡杨<人工种植胡杨.研究对丰收林胡杨、梭梭和柽柳等植被的恢复与重建及可持续管理有一定的参考价值.
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| 关 键 词： | 准噶尔盆地南缘 植物水势 胡杨 梭梭 柽柳 干旱条件 |
| 收稿时间： | 2011-03-25 |
Comparisons of Water Potential among Populus euphratica, Haloxylon Ammodendron and Tamarix Ramosissima under Drought Condition in Southern Edge of Junggar Basin |
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| ZHAN Dong-Xia,ZHUANG Li,WANG Zhong-Ke,XU Zhi-Quan,TIAN Zhong-Ping,SUN Shu-Miao.Comparisons of Water Potential among Populus euphratica, Haloxylon Ammodendron and Tamarix Ramosissima under Drought Condition in Southern Edge of Junggar Basin[J].Xinjiang Agricultural Sciences,2011,48(3):544-550. |
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| Authors: | ZHAN Dong-Xia ZHUANG Li WANG Zhong-Ke XU Zhi-Quan TIAN Zhong-Ping SUN Shu-Miao |
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| Institution: | ZHAN Dong-Xia,ZHUANG Li,WANG Zhong-Ke,XU Zhi-Quan,TIAN Zhong-Ping,SUN Shu-Miao(College of Life Science,Shihhotze University,Shihhotze Xinjiang 832000,China) |
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| Abstract: | 【Objective】The three desert plants (Populus euphratica,Haloxylon ammodendron and Tamarix ramosissima)in the bumper forest of Regiment 150, are used as objects comparing the differences among their water potential variation regularities to explore the varlation character of plant water potential in drought areas.【Method】The water potential of the three plants were measured with a Dew Point Meter Water Potential,combined with the data of their water potential and the groundwater level in 2008 and 2009,the relationship between their water potentials and the groundwater levels was analyzed in order to find the response of plant water potential to the groundwater level.【Result】The results showed that leaf and stem water potentials of natural P.euphratica in 2009 were obviously higher than those in 2008;leaf and stem water potentials of artificial P.euphratica exhibited the similar diurnal change trend,which appeared as the linear type,and were essentially lower than those in 2008;diurnal changes of assimilative shoot water potential of H.ammodendron displayed almost the same variation trend both in 2008 and 2009,which showed the bimodal pattern;stem water potential of T.ramosissima in 2009 was a little higher than that in 2008,but both diurnal variation are similar.Monthly changes of groundwater depth at Regiment 150 Bumper Forest from 2008 to 2009 indicated that amplitude was not significant but revealed a down trend.【Conclusion】By comparison,the result of the comparison of the water potential of the three plants is that: Tamarix ramosissima
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| Keywords: | South edge of Junggar Basin water potential Populus euphratica Haloxylon ammodendron Tamarix ramosissima drought condition |
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