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Sensitivity of short rotation poplar coppice biomass productivity to the throughfall reduction – Estimating future drought impacts

SYSNO ASEP	0485273
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Sensitivity of short rotation poplar coppice biomass productivity to the throughfall reduction – Estimating future drought impacts
Author(s)	Orság, Matěj (UEK-B)_{RID, SAI, ORCID} Fischer, Milan (UEK-B)_{RID, ORCID, SAI} Tripathi, Abishek (UEK-B)_{RID, SAI, ORCID} Žalud, Zdeněk (UEK-B)_{RID, ORCID, SAI} Trnka, Miroslav (UEK-B)_{RID, ORCID, SAI}
Number of authors	5
Source Title	Biomass & Bioenergy. - : Elsevier - ISSN 0961-9534 Roč. 109, feb (2018), s. 182-189
Number of pages	7 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	Dominance ; Drought ; Mortality ; Productivity ; Short-rotation coppice ; Throughfall manipulation
Subject RIV	GC - Agronomy
OECD category	Agronomy, plant breeding and plant protection
R&D Projects	LO1415 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	QJ1610072 GA MZe - Ministry of Agriculture (MZe)
	GA16-16549S GA ČR - Czech Science Foundation (CSF)
Institutional support	UEK-B - RVO:86652079
UT WOS	000424939200021
EID SCOPUS	85040167432
DOI	10.1016/j.biombioe.2017.12.028
Annotation	We examined the effect of throughfall exclusion on aboveground woody biomass (AGB) productivity in a short-rotation woody coppice plantation. This study was carried out between the 3 rd and 7 th year (2011–2015) of the second rotation cycle in hybrid poplar plantation (Populus nigra × P. maximowiczii) in the Czech Republic. A partial-throughfall exclusion (R) treatment and a control (C) treatment were applied. Throughfall exclusion was set to 40% in 2011–2012 and increased to 70% thereafter. The annual mean (standard error) AGB productivity for C and R during 2012–2015 were 11.2 (0.84) and 10.1 (0.89) Mg ha −1 y −1 of dry matter (DM), respectively. The lowest AGB productivity and most pronounced reduction (18.8%) in the annual AGB productivity by the R treatment occurred in 2014 a year with the driest spring. The observed inter-annual variability in AGB productivity was not explained by precipitation nor by precipitation-treatment interaction. However, the annual AGB productivity variation depended (p = 0.002) on the throughfall totals during period May–July. The total harvestable biomass in 2015 reached 81.9 (7.2) and 75.0 (6.2) Mg ha −1 DM for the C and R treatments, respectively. Despite the non-negligible mean treatment difference (5.7 Mg ha −1 DM, i.e. 7.6%), the large between-plot variance and shifts in stand structure resulted in the nonsignificant differences. We suggest that once the root system is established, hybrid poplar plantations are relatively resilient to drought and might act as an income-stabilizing factor when traditional agricultural crops fail to deliver viable yields in drier climate.
Workplace	Global Change Research Institute
Contact	Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
Year of Publishing	2019

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