微根管和根箱法在亚热带细根寿命研究中的应用

The Application of Minirhizotron and Root Box Methods for the Study of Fine Root Longevity in Subtropical Forests

由于研究方法的限制,植物细根寿命的准确估算仍较为困难,因此寻求一种准确的研究方法对细根寿命进行研究显得十分重要。微根管法和根箱法能够在不干扰细根生命过程的前提下连续观测植物细根动态,是一种非破坏性观测方法,被较多地应用于野外观测。结合课题组多年来运用微根管技术和根箱技术研究中亚热带代表性植物细根寿命的实例,对微根管法和根箱法的具体应用进行了介绍和分析,主要包括两种方法的具体实验设计、图片采集及分析、数据处理等,以期为促进对森林生产力和碳源汇控制机理的理解提供借鉴。

The estimation of fine root longevity are difficulty due to the limitations of research methods.Therefore,it is very important to find an accurate research method to study the fine root longevity.The minirhizotron method and root box method can continuously observe the dynamics of plant fine roots without disturbing the life process of fine roots.They are non-destructive observation methods and are widely used in field observation.This research combines the research examples of our team on fine root longevity of representative plants in the mid-subtropical zone through minirhizotron method and root box method.The main contents include the specific experimental design,image collectionand analysis,data processing and other aspects of the two methods.The research is expected to provide reference for promoting the understanding of forest productivity and carbon source-sink control mechanism.