Water limitation intensity shifts carbon allocation dynamics in Scots pine mesocosms

نویسندگان

چکیده

Abstract Background and aims Tree species worldwide suffer from extended periods of water limitation. These conditions not only affect the growth vitality trees but also feed back on cycling carbon (C) at plant-soil interface. However, impact progressing loss soils transfer assimilated C belowground remains unresolved. Methods Using mesocosms, we assessed how increasing levels deficit Pinus sylvestris saplings performed a 13 C-CO 2 pulse labelling experiment to trace pathway into needles, fine roots, soil pore CO 2, phospholipid fatty acids microbial groups. Results With limitation, partitioned more biomass expense aboveground growth. Moderate limitation barely affected uptake label transit time needles . Comparatively, severe increased fraction that allocated roots fungi while lower was readily respired soil. Conclusions When becomes largely unavailable, within slower, may accumulate in or be transferred associated microorganisms without being metabolically used.

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ژورنال

عنوان ژورنال: Plant and Soil

سال: 2023

ISSN: ['0032-079X', '1573-5036']

DOI: https://doi.org/10.1007/s11104-023-06093-5