The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Seasonal responses of terrestrial ecosystem water‐use efficiency to climate change
Abstract
Ecosystem water‐use efficiency (EWUE) is an indicator of carbon–water interactions and is defined as the ratio of carbon assimilation (GPP) to evapotranspiration (ET). Previous research suggests an increasing long‐term trend in annual EWUE over many regions and is largely attributed to the physiological effects of rising CO2. The seasonal trends in EWUE, however, have not yet been analyzed. In this study, we investigate seasonal EWUE trends and responses to various drivers during 1982–2008. The seasonal cycle for two variants of EWUE, water‐use efficiency (WUE, GPP/ET), and transpiration‐based WUE (WUEt, the ratio of GPP and transpiration), is analyzed from 0.5° gridded fields from four process‐based models and satellite‐based products, as well as a network of 63 local flux tower observations. WUE derived from flux tower observations shows moderate seasonal variation for most latitude bands, which is in agreement with satellite‐based products. In contrast, the seasonal EWUE trends are not well captured by the same satellite‐based products. Trend analysis, based on process‐model factorial simulations separating effects of climate, CO2, and nitrogen deposition (NDEP), further suggests that the seasonal EWUE trends are mainly associated with seasonal trends of climate, whereas CO2 and NDEP do not show obvious seasonal difference in EWUE trends. About 66% grid cells show positive annual WUE trends, mainly over mid‐ and high northern latitudes. In these regions, spring climate change has amplified the effect of CO2 in increasing WUE by more than 0.005 gC m−2 mm−1 yr−1 for 41% pixels. Multiple regression analysis further shows that the increase in springtime WUE in the northern hemisphere is the result of GPP increasing faster than ET because of the higher temperature sensitivity of GPP relative to ET. The partitioning of annual EWUE to seasonal components provides new insight into the relative sensitivities of GPP and ET to climate, CO2, and NDEP.
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Cites
Temperature as a potent driver of regional forest drought stress and tree mortality
Park Williams, A., Allen, C. D., Macalady, A. K., Griffin, D., Woodhouse, C. A., Meko, D. M., Swetnam, T. W., Rauscher, S. A., Seager, R., Grissino-Mayer, H. D., et al. (2013) · Nature Climate Change · doi:10.1038/nclimate1693 · Cited by 1,991
Recent patterns and mechanisms of carbon exchange by terrestrial ecosystems
Schimel, D. S., House, J. I., Hibbard, K. A., Bousquet, P., Ciais, P., Peylin, P., Braswell, B. H., Apps, M. J., Baker, D., Bondeau, A., et al. (2001) · Nature · doi:10.1038/35102500 · Cited by 1,379
Self-citationNet carbon dioxide losses of northern ecosystems in response to autumn warming
Piao, S., Ciais, P., Friedlingstein, P., Peylin, P., Reichstein, M., Luyssaert, S., Margolis, H., Fang, J., Barr, A., Chen, A., et al. (2008) · Nature · doi:10.1038/nature06444 · Cited by 1,157
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Cited by
Climate change reduces extent of temperate drylands and intensifies drought in deep soils
Schlaepfer, D. R., Bradford, J. B., Lauenroth, W. K., Munson, S. M., Tietjen, B., Hall, S. A., Wilson, S. D., Duniway, M. C., Jia, G., Pyke, D. A., et al. (2017) · Nature Communications · doi:10.1038/ncomms14196 · Cited by 386
Metadata
- Authors
- Huang, M., Piao, S., Zeng, Z., Peng, S., Ciais, P., Cheng, L., Mao, J., Poulter, B., Shi, X., Yao, Y., Yang, H., & Wang, Y.
- Venue
- Global Change Biology
- Publisher
- Wiley
- Published
- 2016-03-23
- Volume
- 22
- Issue
- 6
- Pages
- 2165-2177
- ISSN
- 1354-1013 (ISSN-L)
- 1365-2486
- OpenAlex
- W2279234921
- Cited by
- 167
- References
- 3
- FWCI
- 3.76
- Type
- journal article
- Language
- en
- Open access
- closed
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- Huang, M., Piao, S., Zeng, Z., Peng, S., Ciais, P., Cheng, L., Mao, J., Poulter, B., Shi, X., Yao, Y., Yang, H., & Wang, Y. (2016). Seasonal responses of terrestrial ecosystem water‐use efficiency to climate change. Global Change Biology. https://doi.org/10.1111/gcb.13180
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