植物比叶质量研究进展

比叶质量(LMA)是叶片经济型谱中最基础的叶功能性状, 也是重要的复合型结构参数。LMA不仅与植物的许多生理反应密切相关, 而且能定量测定光合产物在单位叶面积的投入, 因而被认为是反映植物生态策略的重要指标。目前, 有关LMA的深入研究已在植物生态学、农学、林学、植物生理学领域全面展开。该文系统阐述了LMA在叶片整体、组织、细胞三个水平的结构解析和计算方法; 重点分析了LMA对光合作用的影响; 讨论了LMA的内在遗传差异以及外部的环境胁迫因子(温度、水分、光照)对LMA的影响, 以期梳理比叶质量研究的思路、策略和方法, 为今后的研究提供借鉴和参考。

Research progress on leaf mass per area

Leaf mass per area (LMA) is a composite structural parameter as well as a basic leaf functional trait in the leaf economics spectrum (LES). It is not only closely related to many physiological responses of plants, but also can measure the investment of dry mass per unit of light-intercepting leaf area. LMA is considered an important indicator of plant ecological strategies and has been studied widely in plant ecology, agronomy, forestry, and plant physiology. This paper elucidates the structural analysis and computational methods of LMA at the organizational scales of whole leaf, tissues and cells, examines the influence of LMA on photosynthesis, and discusses the inherent differences in LMA and the responses of LMA to environmental stresses (temperature, water and light), aiming for clarifying research frameworks and methods in studies of LMA and providing guidance on future research.