The root system of pedunculate oak (Quercus robur L.) at the margins of regenerated stands

Abstract

Mauer O., Houšková K., Mikita T. (2017): The root system of pedunculate oak (Quercus robur L.) at the margins of regenerated stands. J. For. Sci., 63: 22-33.The paper aims to contribute to the determination of reasons causing the irregular growth of young pedunculate oaks occurring at the margins of naturally and artificially regenerated plots neighbouring with adult stands on alluvial sites. It presents analyses of aboveground biometric parameters, mortality, root system architecture of young trees, root density in the soil profile, global solar radiation and soil moisture content in dependence on the location of oaks at the northern, southern, eastern or western margins of the regenerated area and on the distance from the stand margin. The highest impact of the neighbouring adult stand is always recorded on the margin of the regenerated plot while its effect is weakening towards the plot centre, and fading away ca. 7 m behind the crown projection of adult trees. Regardless of the oak location (northern, southern, eastern or western margin), the cause is a high root density of marginal trees of the adult stand, which induces the critical lack of water under their crown projections.

Groundwater Recharge from Below under Changing Hydro-Meteorological Conditions in a Forested and Grassland Site of the Great Hungarian Plain

“…It is noteworthy to add that roots were discovered inside the soil samples located beneath the clay layer at 5.5-6.0 m under the forest. This exceeds the data mentioned in the available literature, which indicates that the primary root mass of an oak tree typically falls between the range of 40 and 100 cm [58], whereas the maximum depth of its roots is generally seen to be between 1 and 2 m [59][60][61]. However, it should be noted that the quantitative measured data regarding the region's maximum root zone depth is missing.…”

Old trees in young forests : Biodiversity management in planted conifer forests in southern Sweden

“…Apart from aboveground competition, oaks may initiate belowground competition because of their large and well-established root system (Mauer et al, 2017). Most oak tree roots lie only half a metre under the soil, and may spread to occupy a space four to seven times the width of the tree's crown, generally forming a circle with a diameter two or more times the height of the tree (Stone and Kalisz, 1991).…”

Біоелектрика Екосистем Лісів, Заболочених Лук Та Агроекосистем Західної України

“…Більшість деревних рослин мають потужно розвинену горизонтальну частину кореневої системи (Kalinin, Huz, & Debryniuk, 1998;Maliuha & Khryk, 2010;Eismont, 2014), локалізовану в товщі ґрунту до 30-60 см від поверхні (Dobson, 1995;Crow, 2005;Eshel & Beeckman, 2013). Так, наприклад, корені Q. robur можуть проникати на глибину понад 15 м, однак горизонтальне тонке коріння, важливе для живлення електрогенерувальних мікроорганізмів, зосереджене на глибині 15-40 см (Kalinin, Huz, & Debryniuk, 1998;Mauer, Houskova, & Mikita, 2017). Глибина проникнення коріння P. silvestris може сягати понад 10 м, однак на бідних сухих ґрунтах сосна формує потужну поверхневу кореневу систему з короткими дрібними корінцями, зазвичай з мікоризою (Munzenberge, Golldack, Ullrich, Schmincke, & Huttl, 2004;Auсina et al, 2007;Raudaskoski & Salo, 2008).…”