Artificial drought in Scots pine stands: effects on soil, ground vegetation and tree condition

被引：16

作者：

Ozolincius, Remigijus ^{[1
]}

Stakenas, Vidas ^{[1
]}

Varnagiryte-Kabasinskiene, Iveta ^{[1
]}

Buozyte, Rasa ^{[1
]}

机构：

[1] Lithuanian Forest Res Inst, Dept Ecol, LT-53101 Girionys, Lithuania

来源：

ANNALES BOTANICI FENNICI | 2009年 / 46卷 / 04期

关键词：

defoliation; drought; ground vegetation; litterfall; Scots pine; soil chemistry; QUERCUS-ILEX; MORTALITY; RESPONSES; FOREST; SITE; L;

D O I：

10.5735/085.046.0406

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A drought simulation (roof experiment) was conducted in a 60-year-old Scots pine (Pinus sylvestris) stand in central Lithuania during 2003-2005. The stand represented a typical for Lithuania Scots pine forest of Pinetum vaccinio-myrtillosum type, growing on Arenosols. During the simulated-drought experiment, the changes in soil (humidity, pH, chemistry), ground vegetation (species abundant and composition) and tree condition (needle age, litterfall, crown defoliation) were recorded. The drought decreased soil humidity (O horizon and mineral soil down to the 100-cm depth) and increased the concentrations of some N compounds (in mineral topsoil). The cover of ground vegetation was significantly reduced, the needle age decreased, and crown defoliation increased as a result of drought.

引用

页码：299 / 307

页数：9

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