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陆地生态系统对环境变化响应与适应的操纵性实验网络:构建研究方法与技术体系

Manipulative experiments networks on response and adaptation of terrestrial ecosystems to environmental changes: Building the research methods and technology system.

作者信息

Yu Gui-Rui, Niu Shu-Li, Li Fa-Dong, Zhang Lei-Ming, Chen Wei-Nan

机构信息

Synthesis Research Center of Chinese Ecosystem, Key Laboratory of Ecosystem Network Observation and Mode-ling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.

College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

Ying Yong Sheng Tai Xue Bao. 2021 Jul;32(7):2275-2289. doi: 10.13287/j.1001-9332.202107.036.

Abstract

The feedback relationship between organisms or ecosystems and environment has been a key issue in ecological research. Manipulative experiments with changing biological or environmental factors and large-scale field experiment networks were regarded as effective approaches to understand and accurately quantify the process and mechanisms underlying ecosystem response and adaptation to environmental changes. In recent years, a few networks have been developed, including large-scale networks of field physics simulation experiment (., ECOTRON), ecosystem analysis and experiment platform (AnaEE), international Drought Network, Nutrient Network, and experiment networks based on regional ecological observation stations (., USA-ILTER) at global scale. The development of continent-scale experiment network platform is attracting more attention from the academic community, and will play a more important role in understanding the process and mechanism underlying ecosystem responses to environmental change. We reviewed the development of method and experiment system of ecosystem manipulative experiments, and clearly pointed out that different experiments should form a joint collaborative system to answer fundamental scientific questions about the response and adaptation of ecosystem to global environment change. Manipulative experiments could be classified into four types: 1) Physiological and ecological experiments in closed laboratory equipment; 2) semi-open experiments with changing environmental factors in the field; 3) near-natural field experiments; 4) experiment networks based on field ecological station. Furthermore, we discussed the trends in network design of manipulative experiments focusing on ecosystem response and adaptation to environmental changes and the advantages of large-scale experiments based on natural environmental gradients. We put forward a proposal of integrating the technical advantages of different types of experiments and developing a new generation of field experiment network system. The study discussed the research system based on field experiment network, demonstrated the possibility to understand the patterns and mechanisms of the ecosystem short-term response and long-term adaptation to environmental changes, and proposed some equations to quantify the environmental response of ecosystems. The application of the design plan of the manipulative experiments network proposed here will greatly promote the scientific research level of ecosystems and environmental changes in China and even over the whole world, which has important scientific significance for the national response to climate change and ecological environmental construction.

摘要

生物体或生态系统与环境之间的反馈关系一直是生态学研究的关键问题。通过改变生物或环境因素进行的控制实验以及大规模野外实验网络,被视为理解和准确量化生态系统对环境变化做出响应和适应的过程及机制的有效方法。近年来,已经建立了一些网络,包括全球尺度的大规模野外物理模拟实验网络(如ECOTRON)、生态系统分析与实验平台(AnaEE)、国际干旱网络、养分网络以及基于区域生态观测站的实验网络(如美国-ILTER)。大陆尺度实验网络平台的发展正吸引着学术界更多的关注,并将在理解生态系统对环境变化的响应过程和机制方面发挥更重要的作用。我们回顾了生态系统控制实验的方法和实验系统的发展,并明确指出不同的实验应形成一个联合协作系统,以回答有关生态系统对全球环境变化的响应和适应的基本科学问题。控制实验可分为四种类型:1)在封闭实验室设备中进行的生理和生态实验;2)在野外改变环境因素的半开放式实验;3)近自然野外实验;4)基于野外生态站的实验网络。此外,我们讨论了以生态系统对环境变化的响应和适应为重点的控制实验网络设计趋势,以及基于自然环境梯度的大规模实验的优势。我们提出了整合不同类型实验的技术优势并开发新一代野外实验网络系统的建议。该研究讨论了基于野外实验网络的研究系统,论证了理解生态系统对环境变化的短期响应和长期适应模式及机制的可能性,并提出了一些量化生态系统环境响应的方程。这里提出的控制实验网络设计方案的应用将极大地提升中国乃至全球生态系统与环境变化的科研水平,对国家应对气候变化和生态环境建设具有重要的科学意义。

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