Progressively decreased nitrogen-stimulation of soil phosphatase activity with long-term nitrogen addition

TY - JOUR

T1 - Progressively decreased nitrogen-stimulation of soil phosphatase activity with long-term nitrogen addition

AU - Chen, Ji

AU - Moorhead, Daryl L.

PY - 2022/1

Y1 - 2022/1

N2 - Enhanced anthropogenic nitrogen (N) addition has not been matched by increased phosphorus (P) inputs, leading to widespread P limitation of net primary productivity (NPP). Will ecosystems increasingly be limited by P with continued N addition? No consensus has been reached. Using soil phosphatase activity as an indicator of P limitation, Chen et al. (2020) provided a conceptual framework indicating that N-induced P limitation of NPP acclimates to long-term N addition. Thus, P limitation of NPP with long-term N addition may not be as strong as observed in short-term studies. We are writing this letter to recognize the recent relevant work by Vourlitis et al. (2021a) in Applied Soil Ecology. Their long-term continuous observations provide the first direct evidence supporting this framework. Without this framework, Earth System Models may underestimate ecosystem CO2 sequestration capacity with ongoing enhanced N addition. This framework may also be useful to optimize P management in agroecosystems.

AB - Enhanced anthropogenic nitrogen (N) addition has not been matched by increased phosphorus (P) inputs, leading to widespread P limitation of net primary productivity (NPP). Will ecosystems increasingly be limited by P with continued N addition? No consensus has been reached. Using soil phosphatase activity as an indicator of P limitation, Chen et al. (2020) provided a conceptual framework indicating that N-induced P limitation of NPP acclimates to long-term N addition. Thus, P limitation of NPP with long-term N addition may not be as strong as observed in short-term studies. We are writing this letter to recognize the recent relevant work by Vourlitis et al. (2021a) in Applied Soil Ecology. Their long-term continuous observations provide the first direct evidence supporting this framework. Without this framework, Earth System Models may underestimate ecosystem CO2 sequestration capacity with ongoing enhanced N addition. This framework may also be useful to optimize P management in agroecosystems.

KW - Mobilization

KW - Nitrogen addition

KW - Phosphorus limitation

KW - Phosphorus-acquisition efficiency

KW - Plant functional traits

KW - Resorption

KW - Soil microorganism

KW - Soil phosphatase activity

UR - http://www.scopus.com/inward/record.url?scp=85114406258&partnerID=8YFLogxK

U2 - 10.1016/j.apsoil.2021.104213

DO - 10.1016/j.apsoil.2021.104213

M3 - Comment/debate/letter to the editor

AN - SCOPUS:85114406258

SN - 0929-1393

VL - 169

JO - Applied Soil Ecology

JF - Applied Soil Ecology

M1 - 104213

ER -