干旱区研究

干旱区研究 >

2021 , Vol. 38 >Issue 6: 1683 - 1694

DOI: https://doi.org/10.13866/j.azr.2021.06.20

植物与植物生理

天山北坡山前植物对干旱胁迫的生理响应

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  • 1.新疆大学资源与环境科学学院,新疆 乌鲁木齐 830046
    2.新疆大学绿洲生态教育部重点实验室,新疆 乌鲁木齐 830046
    3.新疆林业科学院,新疆 乌鲁木齐 830018
    4.新疆农业大学林学与园艺学院,新疆 乌鲁木齐 830052
汤东（1996-）,男,硕士研究生,主要从事干旱区植被生态恢复研究. E-mail: 627346905@qq.com

收稿日期: 2021-01-29

  修回日期: 2021-04-21

  网络出版日期: 2021-11-29

基金资助

天然林保护工程财政资金专项(XJTB2020-03)

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Physiological responses of plants to drought stress in the Northern Piedmont, Tianshan Mountains

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  • 1. College of Resources and Environmental Sciences, Xinjiang University, Urumqi 830046, Xinjiang, China
    2. Key Laboratory of Oasis Ecology Ministry of Education, Xinjiang University, Urumqi 830046, Xinjiang, China
    3. Xinjiang Academy of Forestry Sciences, Urumqi 830018, Xinjiang, China
    4. College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052, Xinjiang, China

Received date: 2021-01-29

  Revised date: 2021-04-21

  Online published: 2021-11-29

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摘要

为筛选出天山北坡前山带植被恢复的适宜植物种,以水平沟和鱼鳞坑两种恢复方式,选取锦鸡儿（Caragana frutex）、沙棘（Hippophae rhamnoides）、蔷薇（Rosa）和文冠果（Xanthoceras sorbifolia）为试验材料,观测灌水后土壤水分的时间变化,分析土壤水分变化下4种植物叶片相对含水量、叶绿素、保护酶活性与渗透调节物质的变化趋势,综合评价4种植物的抗旱性。结果表明：随着土壤水分的降低,叶片相对含水量和叶绿素含量均显著降低,鱼鳞坑4种植物叶绿素含量的下降速率高于水平沟;4种植物SOD和POD酶活性含量随水分胁迫程度的加剧均呈先增加后降低最后回到初始水平的特点,但其达到峰值的时间不同;4种植物的可溶性蛋白、丙二醛和脯氨酸含量随水分胁迫加剧均有不同程度的上升趋势,且变化差异性显著。主成分分析法对4种植物的7个生理指标的抗旱能力综合评价表明,水平沟更适于该区域植被恢复,锦鸡儿和蔷薇抗旱适宜性更好。

关键词： 植被恢复; 抗旱性; 天山北坡前山带; 植物生理; 恢复方式; 抗旱评价

本文引用格式

汤东,程平,杨建军,李宏,孙建文,王凯 . 天山北坡山前植物对干旱胁迫的生理响应[J]. 干旱区研究, 2021 , 38(6) : 1683 -1694 . DOI: 10.13866/j.azr.2021.06.20

Abstract

We screened suitable plant species for vegetation restoration in the front mountain zone of the Northern Piedmonts of the Tianshan Mountains. Caragana frutex, Hippophae rhamnoides, Rosa, and Xanthoceras sorbifolia. Under two restoration methods of level furrow and fish-scale pit were used as experimental materials to observe irrigation. Following changes in soil moisture, we analyzed relative water content, chlorophyll, protective enzyme activity, and osmotic adjustment of the four plants under changing soil moisture and evaluated their drought resistance. The results showed decreasing soil moisture, relative leaf water content, and chlorophyll content were significantly reduced, while chlorophyll content of the four plant species in the fish-scale pit decreased faster than level furrow treatment. SOD and POD enzyme activity content of the four plants initially increased, then decreased and returned to initial levels following intense water stress. However, the time to reach its peak differed. Soluble protein, malondialdehyde, and proline content of the four plants all varied in their upward trend with increasing water stress, which were all significant. The comprehensive evaluation of drought resistance of seven physiological indicators for four plants using principal component analysis showed that level furrow is more suitable for vegetation restoration and Caragana frutex and Rosa show better drought resistance suitability.

Key words： vegetation restoration; drought resistance; Northern Piedmonts of the Tianshan Mountains; plant physiology; restoration methods; evaluation of drought resistance

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