Arid
DOI10.1016/j.physa.2023.129401
Early warning for spatial ecological system: Fractal dimension and deep learning
Bian, Junhao; Ma, Zhiqin; Wang, Chunping; Huang, Tao; Zeng, Chunhua
通讯作者Huang, T ; Zeng, CH
来源期刊PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
ISSN0378-4371
EISSN1873-2119
出版年2024
卷号633
英文摘要Ecological dynamic systems often undergo catastrophic regime shifts and have tipping points. Due to the complex interactions and feedbacks among different components of the systems, predicting such transition is a challenging task. This paper investigates the transition patterns of vegetation collapse in semiarid grazing systems. We propose the fractal dimension as a spatial early warning signal to detect this transition. The fractal dimension considers the spatial evolution from the perspective of self-similarity between vegetation. We show that the fractal dimension always decreases to a minimum when the system approaches the critical region, indicating a loss of resilience. We also assess the sensitivity of the fractal dimension under different scenarios of diffusion coefficients and noise levels, which affect the spatial patterns of the vegetation. We compare and analyze the fractal dimension with two commonly used metrics, spatial variance and skewness, and a novel deep learning method in the current research. We also investigate how well the fractal dimension performs with lower-resolution spatial data. Results indicate that the fractal dimension successfully predicts impending critical transition. It turns out that the fractal dimension is a reliable indicator and has significant implications for preventing desertification.
英文关键词Early warning Fractal dimension Deep learning
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:001135354500001
WOS关键词CRITICAL SLOWING-DOWN ; REGIME SHIFTS ; CATASTROPHIC SHIFTS ; EPILEPTIC SEIZURES ; LEADING INDICATOR ; CLIMATE ; PATTERNS ; SAVANNA ; SIGNALS ; RESILIENCE
WOS类目Physics, Multidisciplinary
WOS研究方向Physics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/405056
推荐引用方式
GB/T 7714
Bian, Junhao,Ma, Zhiqin,Wang, Chunping,et al. Early warning for spatial ecological system: Fractal dimension and deep learning[J],2024,633.
APA Bian, Junhao,Ma, Zhiqin,Wang, Chunping,Huang, Tao,&Zeng, Chunhua.(2024).Early warning for spatial ecological system: Fractal dimension and deep learning.PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,633.
MLA Bian, Junhao,et al."Early warning for spatial ecological system: Fractal dimension and deep learning".PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS 633(2024).
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