Water uptake patterns and rooting depths of Tamarix ramosissima in the coppice dunes of the Gurbantünggüt Desert, China: a stable isotope analysis

IF 3.6 3区 生物学 Q1 PLANT SCIENCES Plant Biology Pub Date : 2024-07-16 DOI:10.1111/plb.13695
Z. Dong, Y. Xu, S. Liu, G. Li, M. Ye, X. Ma, S. Li
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中国古尔班通古特沙漠灌丛沙丘中柽柳的吸水模式和扎根深度:稳定同位素分析。
Tamarix ramosissima 在稳定沙漠生态系统中的沙丘方面发挥着重要作用。要了解柽柳在灌丛沙丘上的适应性,就必须了解柽柳的用水策略。我们利用土壤水、地下水和木质部水中的稳定同位素δ2H和δ18O来确定水源的月度差异。此外,我们还使用 2H2O 作为人工示踪剂来探索根系深度。5 月份,T. ramosissima 75% 的水分来自浅层和中层土壤。七月,它从中层和深土层吸收了 90% 的水分。8 月和 9 月,它从深土层获得了约 80% 的水分。使用 2H 作为人工示踪剂进行的标记表明,T. ramosissima 的根系在灌丛沙丘中的深度大于 500 厘米。在 100、200、300 和 400 厘米深处都观察到了 2H 吸收。土壤水是 T. ramosissima 在灌丛沙丘中的主要水源,因为地下水的深度大于 30 米。T. ramosissima灵活的用水策略使其能够有效利用不同的可用水源,以适应干旱环境。这些发现加深了我们对 T. ramosissima 在沙漠生态系统的灌丛沙丘中的吸水模式和干旱适应策略的理解。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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