Plant chlorophyll fluorescence: active and passive measurements at canopy and leaf scales with different nitrogen treatments.

ABSTRACT: Most studies assessing chlorophyll fluorescence (ChlF) have examined leaf responses to environmental stress conditions using active techniques. Alternatively, passive techniques are able to measure ChlF at both leaf and canopy scales. However, the measurement principles of both techniques are different, and only a few datasets concerning the relationships between them are reported in the literature. In this study, we investigated the potential for interchanging ChlF measurements using active techniques with passive measurements at different temporal and spatial scales. The ultimate objective was to determine the limits within which active and passive techniques are comparable. The results presented in this study showed that active and passive measurements were highly correlated over the gr

SUBMITTER: Cendrero-Mateo MP 

PROVIDER: S-EPMC4682433 | biostudies-literature | 2016 Jan

REPOSITORIES: biostudies-literature