陆地生态系统微量元素循环及其对全球变化的响应:进展与展望

微量元素对植物的生长发育起着至关重要的作用。在全球变化大背景下,陆地生态系统微量元素循环过程势必发生改变,影响生态系统的结构与功能。综合文献资料,提取全球变化因子对陆地生态系统微量元素循环的主要影响,以便使读者详细了解这方面的研究进展。重点阐述微量元素的地球化学循环过程及其对降水格局改变、CO₂浓度升高、氮沉降等全球变化的响应机制。经过分析文献资料得出:目前微量元素循环研究存在重视不足、时空尺度较小、技术陈旧等诸多缺陷。非稳定同位素技术与多因子控制实验的协同化将是陆地生态系统微量元素循环研究的重点发展方向。

Micronutrient Cycles and Their Responses to Global Change: Progress and Prospects

Biogeochemical cycling of micronutrients is at the core of ecosystem functions because they play an important role for plant growth, maintenance and reproduction in terrestrial ecosystems. This article summarizes the present state of knowledge about micronutrient cycling based on a literature review and make the readers know the progress in detail. The paper mainly focuses on biogeochemical cycling of micronutrients interrestial ecosystem and its cffects on soil development, atmpspheric deposition, increased inorganic nitrogen and CO₂, nitrogen deposition and soil acidification. Based on the findings, the paper concludes that less enphasis are put on biogeochemical. Cycling of micronutrient. Non-stationary Isotope technology and integrated systems analysis are important development directions in biogeochemical cycling of micronutrients in terrestrial ecosystems.