解耦土壤水分胁迫(low soil moisture, SM) 和大气水分胁迫 (high vapor pressure deficit, VPD)对光合的影响

最新推荐文章于 2025-07-23 20:05:45 发布

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最新推荐文章于 2025-07-23 20:05:45 发布 · 734 阅读

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1.1 目的：介绍两种用于解耦土壤水分胁迫(low soil moisture) 和大气水分胁迫 (high VPD) 对光合作用影响的方法

1.2 背景介绍：

(1) 为什么重要？ Why is important?

Dryness stress can limit vegetation growth and is often characterized by low soil moisture (SM) and high atmospheric water demand (vapor pressure deficit, VPD). However, the relative role of SM and VPD in limiting ecosystem production remains debated and is difficult to disentangle, as SM and VPD are coupled through land-atmosphere interactions, hindering the ability to predict ecosystem responses to dryness [1].

(2) 目前的共识？Current understanding

VPD-GPP relationship was strongly influenced by climatic interactions and that VPD was more important for plant water stress than SWC across most plant functional types when we removed the effect of main climatic drivers, e.g. air temperature, incoming sho