泥石流易发区生态地质环境耦合机制:白龙江流域案例研究。

IF 8 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Science of the Total Environment Pub Date : 2024-12-10 Epub Date: 2024-11-02 DOI:10.1016/j.scitotenv.2024.177230
Yanyan Zhou, Dongxia Yue, Shuangying Li, Yongbin Wang, Xingmin Meng, Xiaofeng Xu
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引用次数: 0

摘要

泥石流灾害可以直接表明一个地区的生态和地质(生态-地质)环境质量。协调这些环境之间的耦合机制对于减少泥石流灾害、促进社会经济可持续发展至关重要。然而,关于泥石流高发区生态地质环境耦合协调机制的综合研究尚未见报道。本研究以白龙江流域为研究对象,提出两个主要假设:(1)生态地质环境系统之间存在相互影响的耦合关系;(2)生态地质环境影响泥石流,其中地质环境因素的影响最为显著。为了验证第一个假设,本研究建立了生态地质环境评估指标体系,包括地质环境、生态环境和人类活动。我们运用投影追求模型和耦合协调度模型(CCD)计算指标权重,分析耦合协调机制。结果表明,三个子系统之间存在相互作用。为了验证第二个假设,我们采用自组织图(SOM)方法对生态地质子系统进行了分类。在此基础上,我们利用方差分解分析法(VDA)和冗余分析法(RDA)分析了生态地质环境对泥石流的影响。结果表明,生态地质环境占泥石流频率变化的 87.8%,其中地质因素的影响最为显著。值得注意的是,泥石流发生频率最高的地区(每年四次)位于武都区城市中心附近,该地区的人文环境子系统占绝对优势,生态地质系统的质量相对较低。因此,我们分析了聚类区域差异背后的原因,并提出了具体建议,包括加强地质灾害预防和潜在危险区域监测。今后的研究应着重于提高数据的准确性,探索更有效的方法,将生态地质环境与泥石流灾害管理相结合,进行功能分区。总之,本研究通过验证上述两个假设,为预防或减轻泥石流灾害、保护生物圈保护区生态系统的策略提供了科学支持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Coupling mechanism of the eco-geological environment in debris flow prone area: A case study of the Bailong River basin.

Debris flow disasters can directly indicate the quality of an area's ecological and geological (eco-geological) environment. Coordinating the coupling mechanism between these environments is crucial for reducing debris flow incidents and promoting sustainable socio-economic development. Nevertheless, comprehensive research on the coupling coordination mechanisms of the eco-geological environment in high-prone areas of debris flow has yet to be reported. This study focuses on the Bailong River Basin (BRB) and proposes two main hypotheses: (1) There is a coupled relationship with mutual influences among the eco-geological environmental systems; (2) The eco- geological environment affects debris flows, with geo-environmental factors having the most significant impact. To validate first hypotheses, this study developed an assessment index system for the eco-geological environment, encompassing geological environment, ecological environment, and human activities. We applied the projection pursuit model and the coupling coordination degree (CCD) model to calculate indicator weights and analyze the coupling coordination mechanisms. The results indicate that the three subsystems interact with each other. To validate second hypotheses, the self-organizing maps (SOM) method categorized the eco-geological subsystems. Building on this foundation, we analyzed the impact of the eco-geological environment on debris flow using variance decomposition analysis (VDA) and redundancy analysis (RDA) methods. The results indicate that eco-geological environment account for 87.8 % of the variation in debris flow frequency, with geological factors having the most significant impact. Notably, the area with the highest frequency of debris flow (four times per year) is located near the urban center of Wudu District, where the human environment subsystem is overwhelmingly dominant and the quality of the ecological and geological systems is comparatively low. Consequently, we analyzed the reasons behind the differences in clustering areas and proposed specific recommendations, including enhancing geological disaster prevention and monitoring potential hazardous areas. Future research should focus on enhancing data accuracy and exploring more effective methods for integrating ecological and geological environments with debris flow disaster management for functional zoning. In conclusion, this study provides scientific support for strategies to prevent or mitigate debris flow disasters and protect the BRB ecosystem by validating the above two hypotheses.

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来源期刊
Science of the Total Environment
Science of the Total Environment 环境科学-环境科学
CiteScore
17.60
自引率
10.20%
发文量
8726
审稿时长
2.4 months
期刊介绍: The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.
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