Results 31 to 40 of about 1,660,917 (306)

Natural regeneration of trees in three types of afforested stands in the Taihang Mountains, China.

PLoS ONE, 2014
Natural regeneration is the natural process by which plants replace themselves. It is a cost-effective way to re-establish vegetation, and it helps to preserve genetic identity and diversity.
Xitian Yang, Dongfeng Yan, Canran Liu
doaj   +1 more source

Dynamics of health status of forest stands on research plots in the Šumava National Park

Journal of Forest Science, 2003
The paper summarises an evaluation of the health status dynamics of allochthonous spruce stands in the Modrava Forest District and of natural stands in the Plešný Forest District.
S. Vacek, K. Matějka, J. Mayová, V.V. Podrázský   +3 more
doaj   +1 more source

Forest site conditions and other features of Scots pine stands favorable for bark beetles

Наукові праці Лісівничої академії наук України, 2018
The aim of research was to evaluate the dependence of bark beetles foci distribution on forest site conditions as well as on Scots pine stands origin and other characteristics.
Valentyna L. Meshkova , Oleksandr I. Borysenko , Viktor I. Pryhornytskyi   +2 more
doaj   +1 more source

Lower alpha, higher beta, and similar gamma diversity of saproxylic beetles in unmanaged compared to managed Norway spruce stands.

PLoS ONE, 2022
Strong anthropogenic pressures on global forests necessitate that managed forests be evaluated as habitat for biodiversity. The complex pattern of habitat types created in forestry systems is ideal for analyses through the theoretical framework of alpha (
Oskar Gran
doaj   +1 more source

Analysis of monoterpene variation in natural stands and plustrees of Pinus sylvestris in Finland.

Silva Fennica, 1986
Variation of monoterpene composition of L. was studied in Southern, Central and Northern Finland using data from both natural stands and plus trees. The natural stands were analysed using different techniques and for fewer terpenes than the plus trees ...
Muona, Outi, Hiltunen, Raimo, Morén, Erkki, Shaw, D.   +3 more
doaj   +1 more source

Dynamics of the health status of forest stands and its prediction on research plots in the Šumava Mts.

Journal of Forest Science, 2006
The paper summarises the evaluation of the health status dynamics of allochthonous spruce stands in the Modrava Forest District and of natural stands in the Plešný Forest District.
S. Vacek, V. Podrázský, K. Matějka
doaj   +1 more source

Population genetic diversity in Quercus robur and Ulmus laevis in Southern Urals (Russia): a comparatively study of adults and progeny in localities with contrast forest cover

Central European Forestry Journal, 2022
Extensive forest areas decreased and fragmented during anthropogenic development of the zone of broad-leaved forest tree species in Russia. The pedunculate oak (Quercus robur L.) and the European white elm (Ulmus laevis Pall.), important key components ...
Ianbaev Ruslan, Boronnikova Svetlana, Yanbaev Yulai, Gainanov Salavat, Kulagin Aleksey   +4 more
doaj   +1 more source

Auswirkungen der Einbringung von Buche (Fagus sylvatica L.) auf die Artendiversität und Naturnähe von Nadelholzbeständen in Niedersachsen [PDF]

, 2013
The promotion and extension of continuous cover mixed stands with a simultaneous reduction of conifer-monocultures play a major role in current silvicultural practices in Central Europe.
Budde, Sabine, Schmidt, Wolfgang, Weckesser, Martin   +2 more
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DELP Treatment on Vision and Retinal Microcirculation in Patients With Acute Ischemic Stroke: Report of Five Cases and Literature Review

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background The delipid extracorporeal lipoprotein filter from plasma (DELP) treatment can effectively reduce blood lipid, increase blood flow, and improve neurological deficits in patients with acute ischemic stroke (AIS). However, its effect on vision and retinal microcirculation in stroke patients has never been reported.
Ning Li, Ronghua Hong, Hua You, Feiping Xu, Qingjun Zhang, Yiwen Lin, Yuting Su, Danmei Lan, Lingjing Jin, Junhui She   +9 more
wiley   +1 more source

The Effects of Different Intensity of Thinning on the Development in Scots Pine (Pinus sylvestris L.) Stands in Kazakh Uplands [PDF]

, 2019
The search for more accurate methods of predicting the growth and development of forest stands became the most urgent task set for foresters of Kazakhstan to determine the permissible interventions in the natural course of the life of plantings, provide ...
Ayan, S., Ebel, A. V., Ebel, Y. I., Zalesov, S. V.   +3 more
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