Evapotranspiration, water use efficiency, and energy partitioning of a mature switchgrass stand
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- 作者：Elke Eichelmanna ; eeichelm@uoguelph.ca" class="auth_mail" title="E-mail the corresponding author ; Claudia Wagner-Riddlea ; Jon Warlanda ; Bill Deenb ; Paul Voroneya
- 关键词：BD ; soil bulk density ; BWUE ; biome water use efficiency ; EBC ; energy balance closure ; EC ; eddy covariance ; ET ; evapotranspiration ; EWUE ; ecosystem water use efficiency ; G ; ground heat flux ; GEP ; gross ecosystem productivity ; GPP ; gross photosynthetic production ; H ; sensible heat flux ; HWUE ; harvest water use efficiency ; NEE ; net ecosystem exchange ; Re ; ecosystem respiration ; Rn ; net radiation ; SOC ; soil organic carbon ; VPD ; vapour pressure deficit ; VWC ; volumetric water content ; WUE ; water use e
- 刊名：Agricultural and Forest Meteorology
- 出版年：2016
- 出版时间：15 February 2016
- 年：2016
- 卷：217
- 期：Complete
- 页码：108-119
- 全文大小：1247 K
文摘
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We conducted eddy covariance measurements over mature switchgrass for two years.
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The first year experienced moderate drought during part of the growing season.
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Switchgrass produced more biomass but fixed less CO2 per water use in the dry year.
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Use of belowground carbon reduced water cost of aboveground biomass production.
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Switchgrass did not show typical signs of drought impact in the dry year.