Net primary productivity and rain‐use efficiency as affected by warming, altered precipitation, and clipping in a mixed‐grass prairie
Abstract
Grassland productivity in response to climate change and land use is a global concern. In order to explore the effects of climate change and land use on net primary productivity (NPP), NPP partitioning [fBNPP, defined as the fraction of belowground NPP (BNPP) to NPP], and rain‐use efficiency (RUE) of NPP, we conducted a field experiment with warming (+3 °C), altered precipitation (double and half), and annual clipping in a mixed‐grass prairie in Oklahoma, USA since July, 2009. Across the years, warming significantly increased BNPP, fBNPP, and RUE BNPP by an average of 11.6%, 2.8%, and 6.6%, respectively. This indicates that BNPP was more sensitive to warming than aboveground NPP (ANPP) since warming did not change ANPP and RUEANPP much. Double precipitation stimulated ANPP, BNPP, and NPP but suppressed RUEANPP, RUEBNPP, and RUENPP while half precipitation decreased ANPP, BNPP, and NPP but increased RUEANPP, RUEBNPP, and RUENPP. Clipping interacted with altered precipitation in impacting RUEANPP, RUEBNPP, and RUENPP, suggesting land use could confound the effects of precipitation changes on ecosystem processes. Soil moisture was found to be a main factor in regulating variation in ANPP, BNPP, and NPP while soil temperature was the dominant factor influencing fBNPP. These findings suggest that BNPP is critical point to future research. Additionally, results from single‐factor manipulative experiments should be treated with caution due to the non‐additive interactive effects of warming with altered precipitation and land use (clipping).
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- Authors
- Xu, X., Sherry, R. A., Niu, S., Li, D., & Luo, Y.
- Affiliations
- University of Oklahoma (US)
- Chinese Academy of Sciences (CN)
- Corresponding author
- Xu, Xia
- Venue
- Global Change Biology
- Publisher
- Wiley
- Published
- 2013-07-24
- Volume
- 19
- Issue
- 9
- Pages
- 2753-2764
- ISSN
- 1354-1013 (ISSN-L)
- 1365-2486
- OpenAlex
- W2142366540
- Semantic Scholar
- 7fb9e959deadaed03119384fe34a38075091f7f1
- Cited by
- 176
- References
- 71
- Citations by year
- 2026: 13 · 2025: 6 · 2024: 16 · 2023: 11 · 2022: 30 · 2021: 18 · 2020: 21 · 2019: 15 · 2018: 10 · 2017: 9 · 2016: 15 · 2015: 6 · 2014: 5 · 2013: 1
- FWCI
- 13.04
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Global Change Biology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation
- University of Oklahoma
- Michigan Technological University
- Topics
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
- Physical Sciences › Environmental Science › Global and Planetary Change › Plant Water Relations and Carbon Dynamics
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Ecology and Vegetation Dynamics Studies
- Keywords
- net primary productivity, precipitation use efficiency, warming, precipitation change, clipping, belowground net primary productivity, mixed-grass prairie, climate change, land use, soil moisture, soil temperature, interaction effects
- MeSH terms
- Poaceae, Microclimate, Oklahoma, Rain, Soil, Ecosystem
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