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Unravelling net primary productivity dynamics under urbanization and climate change in the western Himalaya by Sonali Sharma; P.K. Joshi; Christine Fürst is a Environmental Science article available to read on EtoBox.

What is Unravelling net primary productivity dynamics under urbanization and climate change in the western Himalaya about?

Over the past few decades, climate change and urban expansion have strongly affected vegetation dynamics and overall carbon sink capacity of Himalayan ecosystem. However, the contribution of these two key factors on varying spatio-temporal scales in Himalayan landscapes still lacks in profound analyses. The present study takes Dharamsala and Pithoragarh urban landscapes as examples and uses the Enhanced Spatial and Temporal Adaptive Reflectance Fusion Model (ESTARFM) as the image fusion technique to generate highly resolved, both spatially (30 m) and temporally (monthly), NDVI images. These are used as inputs for Carnegie-Ames-Stanford Approach (CASA) model for Net Primary Productivity (NPP) estimation over the past two decades (2000–2020). During the study period, the NPP loss due to urbanization was 2065.43 kg C in Dharamsala and 401.07 kg C in Pithoragarh. Climate change, measured in terms of interseasonal changes in temperature, rainfall and solar radiation, had considerably contributed to the NPP variations of vegetated areas in both the study sites, however its contribution ratio was relatively lower than residual factors. There was a significant distribution gradient between

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Author

Sonali Sharma; P.K. Joshi; Christine Fürst

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)