Rights statement: This is the peer reviewed version of the following article: Lu, P, Hao, T, Li, X, et al. Ambient nitrogen deposition drives plant-diversity decline by nitrogen accumulation in a closed grassland ecosystem. J Appl Ecol. 2021; 58: 1888– 1898. https://doi.org/10.1111/1365-2664.13858 which has been published in final form at https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2664.13858 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
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Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Ambient nitrogen deposition drives plant-diversity decline by nitrogen accumulation in a closed grassland ecosystem
AU - Lu, P.
AU - Hao, T.
AU - Li, X.
AU - Wang, H.
AU - Zhai, X.
AU - Tian, Q.
AU - Bai, W.
AU - Stevens, C.
AU - Zhang, W.-H.
N1 - This is the peer reviewed version of the following article: Lu, P, Hao, T, Li, X, et al. Ambient nitrogen deposition drives plant-diversity decline by nitrogen accumulation in a closed grassland ecosystem. J Appl Ecol. 2021; 58: 1888– 1898. https://doi.org/10.1111/1365-2664.13858 which has been published in final form at https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2664.13858 This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
PY - 2021/9/30
Y1 - 2021/9/30
N2 - Atmospheric nitrogen (N) deposition, climatic variables and anthropogenic management affect grassland-ecosystem stability by driving changes in plant community and loss of plant diversity. Determination of their influences on plant composition and diversity is essential for predicting ecosystem response to future global changes and for making policies of sustainable grassland management. We evaluated the relative contributions of atmospheric N deposition, climatic variables and grassland management to plant diversity and N accumulation by temporally monitoring the changes in plant community and N status in a temperate grassland ecosystem. Ambient low-level N deposition combined with long-term grassland enclosure led to increases in above-ground biomass and abundance of grasses and sedges, and decreases in those of forbs. The dominant species of perennial forbs and grasses also displayed divergence in their biomass and abundance over time. Nitrogen deposition made greater contributions to the divergent changes in perennial forbs and grasses. However, air temperature and precipitation fluctuations mainly contributed to the annual fluctuations in annual and biennial species. Long-term enclosure aggravated the cumulative effects of soil inorganic N on plant-diversity loss while mowing had opposite effects on the N accumulation. Synthesis and applications. Ambient low-level N deposition can drive loss of plant diversity due to N accumulation in grassland ecosystem under long-time enclosure. Therefore, appropriate grassland management, such as rationally grazing and/or mowing, may be effective practices in terms of maintenance of plant biodiversity under the scenario of enhanced atmospheric N deposition.
AB - Atmospheric nitrogen (N) deposition, climatic variables and anthropogenic management affect grassland-ecosystem stability by driving changes in plant community and loss of plant diversity. Determination of their influences on plant composition and diversity is essential for predicting ecosystem response to future global changes and for making policies of sustainable grassland management. We evaluated the relative contributions of atmospheric N deposition, climatic variables and grassland management to plant diversity and N accumulation by temporally monitoring the changes in plant community and N status in a temperate grassland ecosystem. Ambient low-level N deposition combined with long-term grassland enclosure led to increases in above-ground biomass and abundance of grasses and sedges, and decreases in those of forbs. The dominant species of perennial forbs and grasses also displayed divergence in their biomass and abundance over time. Nitrogen deposition made greater contributions to the divergent changes in perennial forbs and grasses. However, air temperature and precipitation fluctuations mainly contributed to the annual fluctuations in annual and biennial species. Long-term enclosure aggravated the cumulative effects of soil inorganic N on plant-diversity loss while mowing had opposite effects on the N accumulation. Synthesis and applications. Ambient low-level N deposition can drive loss of plant diversity due to N accumulation in grassland ecosystem under long-time enclosure. Therefore, appropriate grassland management, such as rationally grazing and/or mowing, may be effective practices in terms of maintenance of plant biodiversity under the scenario of enhanced atmospheric N deposition.
KW - climatic change
KW - grassland management
KW - low-level nitrogen deposition
KW - nitrogen accumulation
KW - plant diversity
KW - soil pH
KW - temperate steppes
U2 - 10.1111/1365-2664.13858
DO - 10.1111/1365-2664.13858
M3 - Journal article
VL - 58
SP - 1888
EP - 1898
JO - Journal of Applied Ecology
JF - Journal of Applied Ecology
SN - 0021-8901
IS - 9
ER -