Spatiotemporal dynamics and coupling analysis of gross primary productivity and evapotranspiration in the Qinling–Daba Mountains

Bing Cheng; Yong Wang; Jianbo Tan; Xinyao Xie; Xuyang Lu

doi:10.1016/j.jag.2026.105356

May 22, 2026International Journal of Applied Earth Observation and GeoinformationOpen Access

Spatiotemporal dynamics and coupling analysis of gross primary productivity and evapotranspiration in the Qinling–Daba Mountains

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Key Points

The study aims to analyze the dynamics and coupling of gross primary productivity (GPP) and evapotranspiration (ET) in the Qinling–Daba Mountains.
Utilized GLASS, MODIS, and PML data for analysis.
Evaluated GPP and ET dynamics across different elevations.
Investigated the patterns of GPP-ET coupling during growing and non-growing seasons.
GPP showed a pattern of increase and decline with elevation, while ET was less affected by elevation.
GPP-ET coupling was strongest at mid-elevations during the growing seasons.
During non-growing seasons, the strongest GPP-ET coupling occurred at low elevations.

Implication

Analyzes spatiotemporal dynamics of GPP and ET in mountainous regions, indicating intricate relationships.

Abstract

• GLASS, MODIS, and PML were used to analyze mountain GPP-ET dynamics. • GPP increased then declined with elevation, while ET showed weaker dependence. • GPP-ET coupling was strongest at middle elevations during growing seasons. • GPP-ET coupling was strongest at low elevations during non-growing seasons. • Inter-product inconsistency showed topographic and temporal amplification.

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Cite This Study

Cheng et al. (2026) studied this question.

synapsesocial.com/papers/6a1295ae48a0ea1665671e49 https://doi.org/10.1016/j.jag.2026.105356

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Spatiotemporal dynamics and coupling analysis of gross primary productivity and evapotranspiration in the Qinling–Daba Mountains

Key Points

Implication

Abstract

Discussion

Cite This Study

Spatiotemporal dynamics and coupling analysis of gross primary productivity and evapotranspiration in the Qinling–Daba Mountains

Key Points

Implication

Abstract

Discussion

Cite This Study

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