湿地食物网研究中基线物种及分馏因子的可变性对营养级评估的影响
The Impact of Baseline Species and Trophic Discrimination Factors Variability on Trophic Level Assessment in Wetland Food Web Research
严淋露 1庞博 2查穆哈 1陈星瑶 2康振坤 2王强3
作者信息
- 1. 东北林业大学野生动物与自然保护地学院,黑龙江哈尔滨 150040
- 2. 呼伦贝尔市北方寒冷干旱地区内陆湖泊研究院,内蒙古呼伦贝尔 021008
- 3. 中国科学院东北地理与农业生态研究所,吉林长春 130102
- 折叠
摘要
湿地食物网研究是湿地生态系统结构和功能评估的重要组成部分.物种营养级反映了物种间的营养关系以及物种在食物网中的相对位置,营养级的变化可以间接反映湿地生态系统的变化.稳定同位素技术已经被越来越广泛地应用于湿地食物网研究中,在利用氮稳定同位素核算物种营养级时,需要选择合适的基线物种和分馏因子以确保营养级核算的准确性.以营养级核算过程中基线物种和分馏因子两个关键点为核心,介绍了在湿地食物网研究中常用的4种基线物种和2种分馏因子;系统分析了基线物种和分馏因子的影响因素及其对营养级评估的影响;对未来湿地食物网研究中如何选择合适的基线物种和分馏因子进行了总结,旨在为进一步开展湿地生态系统的营养生态研究提供参考.
Abstract
The study of wetland food web is an important component in assessing the structure and function of wetland ecosystems.The trophic level of species reflects the nutritional relationships among species and the relative positions of species in the food web,and the changes of trophic levels can indirectly reflect the changes of wetland ecosystems.With the increasing application of stable isotope techniques in wetland food web research,it is necessary to select appropriate baseline species and discrimination factors to ensure the accuracy of trophic level calculations when using nitrogen stable isotopes.This study focused on the two key points of baseline species and discrimination factors in the process of trophic level calculation,and introduced four commonly used baseline species and two discrimination factors in wetland food web research.The influencing factors of baseline species and discrimination factors and their impacts on trophic level assessment were systematically analyzed.A summary was provided on how to select appropriate baseline species and discrimination factors in the future study of wetland food web,aiming to provide reference for the further research on nutritional ecology of wetland ecosystems.
关键词
湿地生态系统/食物网/稳定同位素/营养级/基线物种/分馏因子Key words
wetland ecosystems/food wed/stable isotopes/trophic level/baseline species/trophic discrimination factors引用本文复制引用
基金项目
呼伦湖保护区科学技术研究能力加强关键技术研究项目(第三期)()
呼伦湖流域湿地与湖岸河岸缓冲带保护与恢复试点工程项目()
出版年
2024
NETL
NSTL
万方数据