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首页> 外文期刊>Chinese science bulletin >Response of the accumulation of proline in the bodies of Populus euphratica to the change of groundwater level at the lower reaches of Tarim River
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Response of the accumulation of proline in the bodies of Populus euphratica to the change of groundwater level at the lower reaches of Tarim River

机译：胡杨体内脯氨酸积累对塔里木河下游地下水位变化的响应。

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摘要

The content of proline in the plant bodies is closely related to the converse-succession-resistant capability of the plants. In this paper, the relationship between the proline accumulation in the bodies of Populus euphratica and the change of groundwater level is analyzed by taking Populus euphratica, the main community-building species of the desert riparian forests along the Tarim River, as the research object. The research results show that the accumulation of proline in the bodies of Populus euphratica is closely related to the change of groundwater level gradient under drought stress, it increases with the drawdown of groundwater level and the increase of moisture stress degree; the accumulation of proline in the bodies of Populus euphratica has two extremely high points at the groundwater depth ranges of 3.64 -5.14 m and 9.46-10.16 m. Combining the field investigation and the analysis of the plots, it is considered that the groundwater level of 3.5-4.5 m is rational for the growth of Populus euphratica. The stress groundwater depth for the normal growth and the critical one for the survival of Populus euphratica are below 4.5 m and 9-10 m respectively at the lower reaches of the Tarim River.
机译：植物体内脯氨酸的含量与植物的抗逆继承能力密切相关。本文以塔里木河沿岸荒漠河岸林的主要群落构建树种胡杨为研究对象，分析了胡杨体内脯氨酸的积累与地下水位变化之间的关系。研究结果表明，胡杨体内脯氨酸的积累与干旱胁迫下地下水位梯度的变化密切相关，随地下水位的下降和水分胁迫程度的增加而增加。胡杨体内脯氨酸的积累在地下水深度为3.64 -5.14 m和9.46-10.16 m时有两个极高的点。结合田间调查和样地分析，认为3.5-4.5 m的地下水位对胡杨的生长是合理的。塔里木河下游正常生长的应力地下水深度和胡杨生存的关键深度分别低于4.5 m和9-10 m。

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