文献类型：期刊文献

中文题名：碳氢氧稳定同位素在草地生态系统水循环研究中的应用

英文题名：Application of Carbon, Hydrogen and Oxygen Stable Isotope on Hydrologic Cycle of Grassland Ecosystem: A Review

作者：徐庆[1] 王婷[1] 高德强[1]

第一作者：徐庆

机构：[1]中国林业科学研究院森林生态环境与保护研究所国家林业和草原局森林生态环境重点实验室

年份：2019

卷号：32

期号：6

起止页码：130-136

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金项目(31670720,31170661,31870716);林业公益性行业专项(201504423)

语种：中文

中文关键词：草地生态系统;氢氧稳定同位素;碳稳定同位素;水循环过程;水分利用效率

外文关键词：grassland ecosystem;hydrogen and oxygen stable isotope;carbon stable isotope;hydrologic process;water use efficiency

分类号：S812.1

摘要：碳氢氧稳定同位素是存在于天然水体和植物组织中的良好的示踪剂,具有较高的灵敏度与准确性,可系统和定量地阐明草地生态系统水循环过程及各水体的转化关系、植物水分利用策略以及植被对全球变化的响应机制等。本文概述了稳定同位素的基本概念和原理,总结和分析了草地生态系统水循环的研究方法和现状,重点探讨和综述了氢氧稳定同位素技术在草地生态系统水循环过程(包括大气降水、地表水、土壤水、地下水、植物水、蒸发水等)以及碳稳定同位素技术在植物水分利用效率中应用的国内外研究进展,分析了其存在的问题,展望了这一领域未来的研究方向和应用前景,为我国草地资源保护、合理利用及退化草地生态系统恢复等提供理论依据。
Grassland is a major component and important resource of terrestrial ecosystem and has important production and ecological functions.However,the grassland in China has faced with severe ecological problems such as water resource shortage and vegetation degradation due to global climate change and long-term irrational utilization,which poses a serious threat to the stability of ecosystem.Therefore,quantitatively studying the hydrologic cycle of grassland ecosystem provides important application value and significant guidance for the protection and sustainable development of grassland ecosystem.Stable isotopes of carbon,hydrogen and oxygen are natural tracers in water body and plant tissue,with high sensitivity and accuracy.Stable isotopes of hydrogen and oxygen can be used to systematically and quantitatively clarify the hydrologic cycle and processes of grassland ecosystem,the conversion relationship between water bodies,the water use strategy of plants and the response mechanism of vegetation to global climate change.In this article,the basic concept and principle of stable isotopes are reviewed.The research methods for examining the hydrologic cycle of grassland ecosystems and their application are summarized and analyzed.Progresses in the application of hydrogen and oxygen stable isotopes in the hydrologic process of grassland ecosystem are extensively discussed,including atmospheric precipitation,runoff,soil water,groundwater,water source for plants,and evaporation,and the application of carbon stable isotope in plant water use efficiency.The problems and future researches of stable isotope techniques in the study of hydrologic cycle are discussed and analyzed.