nutrient concentrations

The concentrations of a variety of nutrients in the boles that were then assessed for differences in respiration in response to either NPK or water addition. Average concentrations are given in a table in text of the relevant manuscript.

本研究测定了树干内多种营养元素的浓度，并以此为基础评估了施加氮磷钾（NPK）肥料或补水操作所导致的呼吸作用差异。相关手稿的正文中以表格形式呈现了平均浓度值。