环境扰动对食物网同步性与稳定性的影响

杜蔓婷; 韩晓卓

doi:10.13568/j.cnki.651094.651316.2023.11.29.0003

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环境扰动对食物网同步性与稳定性的影响

更新时间：2026-01-21

- 环境扰动对食物网同步性与稳定性的影响
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 41, Issue 3, Pages: 268-278(2024)
- 作者机构：
  
  广东工业大学数学与统计学院
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.651316.2023.11.29.0003
  CLC： Q148
- Published：2024
- 稿件说明：
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[1]杜蔓婷,韩晓卓.环境扰动对食物网同步性与稳定性的影响[J].新疆大学学报(自然科学版)(中英文),2024,41(03):268-278+287.
[1]杜蔓婷,韩晓卓.环境扰动对食物网同步性与稳定性的影响[J].新疆大学学报(自然科学版)(中英文),2024,41(03):268-278+287. DOI： 10.13568/j.cnki.651094.651316.2023.11.29.0003.

DOI：10.13568/j.cnki.651094.651316.2023.11.29.0003.

摘要

基于生态位模型，建立8个物种的食物网关系，并引入随机环境扰动因子，通过改变不同的环境波动强度和受影响的程度，重点分析了环境波动对该系统的时空动态、同步性以及稳定性的影响．主要采用傅里叶变换和小波变换方法以分析物种的变化周期及同步性．模拟结果发现：中等强度的环境波动增加了8个物种的稳定性，并且种间同步性达到较高水平，该结果与中等强度假说相一致．若环境波动强度增强，将有物种灭绝，此时顶级捕食者与其强链接的物种之间的同步性将减弱，且环境波动强度与物种间相关性影响着物种的同步周期．另外，同步强度不仅与网络连接强度有关，还与物种密度、物种营养级有关．

Abstract

Based on niche model

this paper has established relationships of eight species

and introduced random environmental fluctuations factors. The article focuses on analyzing the temporal dynamic

synchrony

and stability of the system caused by different intensity of environmental fluctuations. In this paper

Fourier transform and wavelet transform methods are mainly used in order to analyze the period and synchrony of species changes. The simulation results show that medium intensity of environmental fluctuations increase the stability of eight species

whose interspecific synchrony intensity reach a high level

which is consistent with the intermediate disturbance hypothesis. With the increase of environmental fluctuations

species will become extinct and synchrony between top predators and their strong-linked species will weaken. Additionally

the strength of environmental fluctuations and interspecies correlation affect the synchrony period of species

where positive-correlated environmental changes and high intensity environmental fluctuations shorten the synchrony period of species

while negative-correlated environmental changes lengthen the synchrony period.

关键词

Keywords

references

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