Results 51 to 60 of about 192,640 (168)
Development of species composition in long term simulations with an individual-tree growth simulator
Journal of Forest Science, 2009 The spruce-fir-beech dominated forest stands in Litschau in the Austrian part of the Bohemian Massif were converted by former forest management practices into pure Norway spruce stands and are now discussed to be reconverted into the potential natural ...
M. Huber, H. Sterba
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Will the Real "Natural Trading Partner" Please Stand Up? [PDF]
Journal of Economic Integration, 2001 Adherents to the “natural trading partner” hypothesis argue that forming a PTA is more likely to raise welfare if member countries already trade disproportionately with each other. Opponents of the hypothesis claim that the opposite is true: welfare is likely to be higher if member countries trade less with each other.
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Frontiers in SustainabilityIntroductionRailway corridors, as linear landscape structures, are highly exposed to natural hazards. In alpine regions intact protective forests form a key basis for safeguarding the route network by complementing technical protection measures through ...
Helene Mueller +7 more
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Folia OecologicaEnabling natural seed regeneration is important because natural stands grown from seeds are more productive compared to vegetative and artificial ones; they are also more resistant to adverse environmental factors and climate change. The aim of the study
Tkach Viktor +3 more
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Journal of Forest Science, 2003 In 1999-2000 in the Protected Landscape Area (PLA) Žďárské vrchy hills the occurrence of psocids (Psocoptera) was studied in different types of biotopes: natural forest ecosystems (stands of Fagus sylvatica with individual admixture of Abies alba, Acer ...
P. Mückstein, O. Holuša
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To Understand Where Humankind Stands in Nature
Anthropological Science (Japanese Series), 2008 現在新しい学習指導要領の改訂作業が進んでいる。このようなときに，現行の学習指導要領の問題点を総括することは，次期学習指導要領を考えていく上で重要である。現行の指導要領においては，理科に当てる時数が少ないために「DNA」などを学ぶことなく終わったり，生物Iを履修してもその中に含まれない「進化」や「代謝」「生態」などは，生物IIを履修しないと学べない。かつて行われていた「生物IA」（ヒトの生物学）という科目は，ヒトを対象に総合的に見る幅広いカリキュラムであった。そのような科目が定着しなかったのは，そのアプローチが中途半端であったこと，入試において重要視されなかったことなどがあげられる。しかし，ヒトである自分自身を知ることは生徒の興味を引かせ，そこを入り口に生物の多様性 ...
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Biotic productivity of forests of the National Natural Park «Holosiivskyi»
Наукові праці Лісівничої академії наук України, 2018 According to the research results, the structure and total volumes of phytomass and sequestered carbon of the National natural park «Holosiivskyi» forest stands are presented. The calculation of the biotic productivity of park forest stands was conducted
Petro Lakyda , Bohdana Dubrovets
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Vulnerability of African Rosewood (Pterocarpus erinaceus, Fabaceae) natural stands to climate change and implications for silviculture in West Africa. [PDF]
Heliyon, 2020 Adjonou K +10 more
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