Ideas and perspectives: Tracing terrestrial ecosystem water fluxes using hydrogen and oxygen stable isotopes – challenges and opportunities from an interdisciplinary perspective
Ideas and perspectives: Tracing terrestrial ecosystem water fluxes using hydrogen and oxygen stable isotopes – challenges and opportunities from an interdisciplinary perspective
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DOI：
10.5194/bg-15-6399-2018
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发表时间：
2018-10
期刊：
影响因子：
4.9
通讯作者：
D. Penna;L. Hopp;F. Scandellari;S. Allen;P. Benettin;M. Beyer;J. Geris;J. Klaus;J. Marshall;L. Schwendenmann;T. Volkmann;Jana von Freyberg;Anam Amin;N. Ceperley;M. Engel;J. Frentress;Y. Giambastiani;J. McDonnell;G. Zuecco;P. Llorens;R. Siegwolf;T. Dawson;J. Kirchner
中科院分区：
文献类型：
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作者：
D. Penna;L. Hopp;F. Scandellari;S. Allen;P. Benettin;M. Beyer;J. Geris;J. Klaus;J. Marshall;L. Schwendenmann;T. Volkmann;Jana von Freyberg;Anam Amin;N. Ceperley;M. Engel;J. Frentress;Y. Giambastiani;J. McDonnell;G. Zuecco;P. Llorens;R. Siegwolf;T. Dawson;J. Kirchner
摘要。在这篇评论中，我们总结了2017年9月在意大利瓦尔迪佩萨圣卡西亚诺举行的“森林和农业环境中水分分配和植物-土壤相互作用的同位素研究”研讨会上出现的讨论，并以此为基础。量化和理解水循环如何通过地球的关键地带是重要的，为社会和政策制定者提供科学背景，可持续地管理水资源，特别是考虑到日益增长的全球对水资源短缺的关注。水中氢和氧的稳定同位素已被证明是跟踪临界区水通量的有力工具。然而，机械复杂性（例如混合和分馏过程，自然系统的异质性）和方法问题（例如缺乏样品特定区室的标准方案，例如土壤水和木质部水）限制了稳定水同位素在临界区科学中的应用。在本评论中，我们研究了基于同位素的生态水文应用的一些机遇和关键挑战，并概述了专注于水和环境科学中这一重要工具的跨学科研究机会的新观点。
Abstract. In this commentary, we summarize and build upon discussions that emerged during the workshop “Isotope-based studies of water partitioning and plant–soil interactions in forested and agricultural environments” held in San Casciano in Val di Pesa, Italy, in September 2017. Quantifying and understanding how water cycles through the Earth's critical zone is important to provide society and policymakers with the scientific background to manage water resources sustainably, especially considering the ever-increasing worldwide concern about water scarcity. Stable isotopes of hydrogen and oxygen in water have proven to be a powerful tool for tracking water fluxes in the critical zone. However, both mechanistic complexities (e.g. mixing and fractionation processes, heterogeneity of natural systems) and methodological issues (e.g. lack of standard protocols to sample specific compartments, such as soil water and xylem water) limit the application of stable water isotopes in critical-zone science. In this commentary, we examine some of the opportunities and critical challenges of isotope-based ecohydrological applications and outline new perspectives focused on interdisciplinary research opportunities for this important tool in water and environmental science.