Deciphering isotope signatures of Earth Surface and Critical Zone processes
Deciphering isotope signatures of Earth Surface and Critical Zone processes
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破译地球表面和关键区域过程的同位素特征
DOI：
10.1016/j.chemgeo.2016.10.035
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发表时间：
2016
期刊：
影响因子：
3.9
通讯作者：
Ma, Lin
中科院分区：
文献类型：
--
作者：
Teng, Fang-Zhen;Ma, Lin
地球的临界带是地球从树冠顶部到地下水含水层底部的薄薄的外层，它支持着几乎所有的人类活动（例如Brantley et al. 2007, 2011）。了解、预测和管理关键区域的演变、功能和服务是21世纪国际关键区域研究的重点（Banwart et al. 2013）。最近，人们共同努力了解地球化学过程，如风化、土壤形成、侵蚀、河流运输、元素流动性以及自然和管理系统中的环境途径。各种传统和非传统的同位素系统，包括元素周期表上从轻到重的元素，已经发展并应用于地球化学界。2014年12月，我们在美国加州旧金山举行的秋季AGU会议上召开了“地球表面和临界带过程的同位素特征破译”专题会议。本卷中的16篇论文来自于在那次会议上提出的工作，以及无法参加会议的科学家的贡献。这些论文涵盖的主题范围广泛，从河流、土壤和集水区等自然环境中的低温地球化学和生物过程，到低温流体-岩石相互作用过程中同位素分馏因子和元素分配的实验校准和建模。同位素系统包括稳定同位素（C、N）、非稳定同位素（Li、Mg、Ca、Cu、Zn、Mo）和放射成因同位素（Ar、Sr、u系列）。
Earth’s Critical Zone is the thin outer layer of our planet from the top of the tree canopy to the bottom of groundwater aquifers, and supports almost all human activities (eg Brantley et al. 2007, 2011). Understanding, predicting and managing the evolution, functions and services of the Critical Zone is the focus of international Critical Zone research of the 21st century (Banwart et al. 2013). Concerted efforts have been made recently to understand geochemical processes such as weathering, soil formation, erosion, riverine transport, element mobility, and environmental pathways in both natural and managed systems. A variety of traditional and non-traditional isotope systematics, with elements from light to heavy mass on the periodic table, has been developed and used in the geochemical community. In December of 2014, we convened a special session at the Fall AGU conference in San Francisco, CA on “Deciphering isotope signatures of Earth Surface and Critical Zone processes”. The 16 papers in this volume result from work presented in that session, as well as contributions from scientists who were unable to attend. The topics covered by these papers range widely from low temperature geochemical and biological processes in natural environments such as rivers, soils, and catchments, to experimental calibration and modeling of the isotope fractionation factors and element partitioning during low-temperature fluid-rock interactions. The isotope systematics include both stable (C, N), non-traditional stable (Li, Mg, Ca, Cu, Zn, Mo) and radiogenic (Ar, Sr, U-series) isotopes.