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Quantifying ecological memory during forest succession: A case study from lower subtropical forest ecosystems in South China

机译：森林演替过程中的生态记忆量化：以华南中亚热带亚热带森林生态系统为例

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摘要

The concept of ecological memory provides a new perspective for research on forest succession by including historical factors and the initial state of ecological processes. However, there are still significant gaps between the concept and its application. We selected nine proxy indicators (plant species, soil seed banks, soil microbes, soil animals, birds, soil age, soil pollen, soil mineral distribution, and light environment) and developed a method to quantify ecological memory and succession in a subtropical forest succession in South China. Taking the climax-monsoon evergreen broad-leaved forest as the reference ecosystem, we found that ecological memory increased nonlinearly and accumulated following a specific assembly rule during succession. Memory concerning major soil microbes and soil animals, which improve the soil substrate, mainly accumulated from the initial to the early successional stage. Memory concerning the number of bird species and the availability of light, which ensure a source of regenerative seeds and the survival of understory seedlings, mainly accumulated from the early to middle successional stages. Memory concerning vegetation and soil seed banks mainly accumulated late in succession, guaranteeing that the ecosystem would reach the regional climax stage. Prospective memory was greater than retrospective memory in every successional stage except the late stage, which indicated that all stages but the late stage were undergoing progressive succession. Our study demonstrates that the concept of ecological memory and the proposed evaluation framework are useful for guiding research on succession and restoration, and especially for assessing how "far" a restored ecosystem is from a reference ecosystem or how far a restored ecosystem has deviated from its natural succession trajectory.
机译：生态记忆的概念包括历史因素和生态过程的初始状态，为森林演替研究提供了新的视角。但是，该概念及其应用之间仍然存在很大差距。我们选择了九种替代指标（植物物种，土壤种子库，土壤微生物，土壤动物，鸟类，土壤年龄，土壤花粉，土壤矿物分布和光照环境），并开发了一种量化亚热带森林演替中生态记忆和演替的方法在华南。以高潮季风常绿阔叶林为参考生态系统，我们发现生态记忆在演替过程中遵循特定的装配规律非线性增加并积累。有关主要土壤微生物和土壤动物的记忆，这些记忆会改善土壤基质，主要是从初期到演替初期积累的。关于鸟类种类的数量和光的可用性的记忆，这些记忆确保了可再生种子的来源和林下幼苗的存活，这些记忆主要是从早期到中期演替阶段积累的。关于植被和土壤种子库的记忆主要是连续积累的，从而确保了生态系统达到区域性高潮阶段。在每个演替阶段中，前瞻记忆大于回顾记忆，除了后期，这表明除后期之外的所有阶段都在进行性演替。我们的研究表明，生态记忆的概念和拟议的评估框架可用于指导有关继承和恢复的研究，尤其是评估恢复的生态系统离参考生态系统有多远或恢复的生态系统偏离其生态系统有多远自然演替轨迹。

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  • 来源
    《Ecological indicators》 |2013年第11期|192-203|共12页
  • 作者

    Zhongyu Sun; Hai Ren; Valentin Schaefer; Hongfang Lu; Jun Wang; Linjun Li; Nan Liu;

  • 作者单位

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences,Guangzhou 510650, China,Graduate University of the Chinese Academy of Sciences, Beijing 100049, China;

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences,Guangzhou 510650, China;

    School of Environmental Studies, Faculty of Social Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada;

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences,Guangzhou 510650, China;

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences,Guangzhou 510650, China;

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences,Guangzhou 510650, China,Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Shenzhen Graduate School of Peking University, Shenzhen 518055, China;

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences,Guangzhou 510650, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Ecological memory; Indicators; Forest succession; Ecological resilience; Succession trajectory;

    机译：生态记忆;指标;森林演替;生态弹性;继承轨迹;

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