Abstract
Abstract Nutrient resorption from senescing leaves can significantly affect plant nutrient status and growth, making it an important process for carbon‐cycle predictions for land surface models (LSMs). Based on a recent analysis of global nutrient resorption patterns from trait data, we develop a dynamic scheme of nitrogen (N) resorption driven by leaf structural and environmental factors, and test its effect on present‐day global simulations for woody plant functional types (PFTs) using the QUINCY biosphere model. Consistent with observations, we predict higher N resorption for the deciduous PFT compared to the evergreen PFTs, while at the same time reproducing the global gradient of decrease in resorption with key environmental drivers such as air temperature within each PFT. As a result, the novel scheme increases N resorption in N‐limited plants, enhancing stored N for the subsequent year and reducing internal N limitation. This has cascading implications for ecosystem nutrient pools, plant productivity and, to a limited extent, the response of carbon and N cycling to elevated CO 2 . The new scheme contributes to the development of an ecologically realistic representation of nutrient resorption in an LSM, with implications for both present day and future N limitation of the terrestrial biosphere.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
The model predicts higher N resorption for the deciduous plant functional type than for the evergreen types.
Verbatim
e0“we predict higher N resorption for the deciduous PFT compared to the evergreen PFTs”
Claim · model-written summary
The model reproduces a global decrease in N resorption with environmental drivers such as air temperature within each woody plant functional type.
Verbatim
e0“reproducing the global gradient of decrease in resorption with key environmental drivers such as air temperature within each PFT”
e1“woody plant functional types (PFTs)”
Claim · model-written summary
The novel dynamic scheme increases N resorption in N-limited plants.
Not reportedComparator
Verbatim
e0“the novel scheme increases N resorption in N-limited plants, enhancing stored N for the subsequent year and reducing internal N limitation”
Claim · model-written summary
The novel scheme enhances stored N for the subsequent year in N-limited plants.
Not reportedComparator
Verbatim
e0“the novel scheme increases N resorption in N-limited plants, enhancing stored N for the subsequent year and reducing internal N limitation”
Claim · model-written summary
The novel scheme reduces internal N limitation in N-limited plants.
Not reportedComparator
Verbatim
e0“the novel scheme increases N resorption in N-limited plants, enhancing stored N for the subsequent year and reducing internal N limitation”
Claim · model-written summary
The authors state that the scheme has cascading implications for ecosystem nutrient pools and plant productivity, and to a limited extent for the response of carbon and N cycling to elevated CO2.
Verbatim
e0“This has cascading implications for ecosystem nutrient pools, plant productivity and, to a limited extent, the response of carbon and N cycling to elevated CO 2”
e1“woody plant functional types (PFTs)”