Diurnal Variations of Soil Electrical Resistivity and Photosynhtetic Activity of Short Rotation Coppice

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F19%3A43916725" target="_blank" >RIV/62156489:43410/19:43916725 - isvavai.cz</a>

Result on the web

<a href="http://www.cbks.cz/rostliny2019/prispevky/Majewski.pdf" target="_blank" >http://www.cbks.cz/rostliny2019/prispevky/Majewski.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Diurnal Variations of Soil Electrical Resistivity and Photosynhtetic Activity of Short Rotation Coppice

Original language description

Poplar and willow short rotation coppice (SRC) became popular in last decades as new agricultural system for production of renewable resources - biomass, also as land and soil management which benefits the environment (erosion control, biodiversity). Plantations also have relatively low-intensive agrotechnology and are therefore easy to maintain for farmers, as compared to conventional annual food crops. To evaluate the ecophysiological activity of the tree species, we performed a 1-day ad-hoc field experiment in a poplar plantation. We measured a net photosynthetic rate (Pn) and soil electrical resistivity (ρs) of several poplar trees Populus nigra L. in one of selected arrays of young plantation. Our goal was to observe differences in soil water availability and daily courses of Pn and transpiration (T) as well as the factors limiting both photosynthesis and stomatal closure in particular. Daily courses of Pn and T showed typical midday depression which was attributed to a drop in a stomatal conductance (Gs). These changes were induced by a daily courses of photosynthetically active radiation (PAR) and leaf temperature. Certain differences in Pn and T courses were observed between individual trees, however, a general trend was that Pn and T were closely coupled and well related to each other. The highest Pn and T values were found in the individuals, which were located at a margin of the plantation area and thus benefiting from a higher soil water availability measured by the electrical resistivity tomography approach. Our results show, that the lowest transpiration and the highest soil resistivity was found in the four year old trees. This is probably caused by different agronomy - while in four year old plantation there is no mechanical weeding, in younger (three years) plantation there a repeated mechanical weeding disrupts soil surface and allows better precipitation of rain water to subsurface layers old soil.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Zahradnictví: Vědecká příloha 2019

ISBN

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ISSN

1213-7596

e-ISSN

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Number of pages

12

Pages from-to

236-247

Publisher name

Profi Press s.r.o.

Place of publication

Praha

Event location

Lednice

Event date

Oct 23, 2019

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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