人为干扰与自然火灾累积效应对森林再生能力的影响研究

Study on the Cumulative Effects of Anthropogenic Disturbances and Natural Fire on Forest Regeneration Capacity

摘要: 森林再生能力是维持森林生态系统稳定性和可持续发展的关键基础。在全球气候变化及人类活动持续增强的背景下，森林生态系统受到多种干扰因素的共同影响，其中人为干扰与自然火灾的累积效应尤为突出。本文在梳理国内外相关研究成果的基础上，系统分析了人为干扰与自然火灾之间的交互作用机制，并结合新疆地区森林生态系统特征，对复合干扰条件下森林再生过程进行了综合分析。研究表明，多重干扰不仅会改变森林群落结构，还可能通过破坏生物遗产、影响种子来源以及改变微生境条件等途径降低森林再生能力。新疆天山和阿勒泰山森林地区近年来多次发生森林火灾，在火灾与人为活动叠加影响下，部分区域森林恢复过程明显延缓。为提升森林生态系统恢复能力，应加强火灾监测与预防、减少人为干扰、保护关键生境以及推进近自然森林经营管理。研究结果可为干旱区森林生态系统保护与恢复提供参考。本文进一步增加了跨区域案例综合表与复合干扰概念框架，并在讨论部分比较不同生态系统中再生失败机制的异同，提出“干扰强度–生态记忆–再生环节阈值”响应假说，以增强综述的系统性、可比性和理论解释力。

Abstract: Forest regeneration capacity serves as a fundamental basis for maintaining the stability and sustainability of forest ecosystems. Against the backdrop of global climate change and intensifying human activities, forest ecosystems are increasingly subjected to multiple disturbances, among which the cumulative effects of anthropogenic disturbances and natural fires are particularly prominent. Building upon a comprehensive review of domestic and international research, this paper systematically analyzes the interaction mechanisms between anthropogenic disturbances and natural fires. Integrating the specific characteristics of forest ecosystems in Xinjiang, it provides a synthetic analysis of forest regeneration processes under compound disturbance regimes. The findings indicate that multiple disturbances not only alter forest community structure but also impair regeneration capacity by degrading biological legacies, compromising seed sources, and modifying microhabitat conditions. In the forested regions of the Tianshan and Altai Mountains in Xinjiang, recurrent wildfires in recent years—exacerbated by concurrent human activities—have significantly delayed forest recovery in certain areas. To enhance ecosystem resilience, strategies such as strengthening fire monitoring and prevention, minimizing anthropogenic disturbances, protecting critical habitats, and promoting close-to-nature forest management are recommended. These results offer valuable insights for the conservation and restoration of forest ecosystems in arid regions. Furthermore, this review incorporates a cross-regional case synthesis table and a conceptual framework for compound disturbances. The discussion section compares the mechanisms underlying regeneration failure across different ecosystems and proposes a response hypothesis termed “Disturbance Intensity-Ecological Memory-Regeneration Threshold”, thereby enhancing the systematic rigor, comparability, and theoretical explanatory power of this synthesis.