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Titlebook: Impacts of Forest Harvesting on Long-Term Site Productivity; W. J. Dyck,D. W. Cole,N. B. Comerford Book 1994 Springer Science+Business Med

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21#
發(fā)表于 2025-3-25 03:20:24 | 只看該作者
22#
發(fā)表于 2025-3-25 08:53:03 | 只看該作者
H. Van Miegroet,D. Zabowski,C. T. Smith,H. Lundkvistdominantly focuses on the reasons ‘why’ the inclusion of pregnant women in clinical research is necessary – viz., to develop effective treatments for women during pregnancy, to promote fetal safety, to reduce harm to women and fetuses from suboptimal care, and to allow access to the benefits of rese
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發(fā)表于 2025-3-25 12:58:30 | 只看該作者
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發(fā)表于 2025-3-25 15:59:42 | 只看該作者
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發(fā)表于 2025-3-25 20:34:03 | 只看該作者
Evidence for Long-Term Productivity Change as Provided by Field Trials,as reliable as this understanding. Because our understanding of factors affecting forest growth is incomplete, results from carefully controlled field trials, rather than models, provide the more convincing evidence of productivity change.
26#
發(fā)表于 2025-3-26 03:28:24 | 只看該作者
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發(fā)表于 2025-3-26 07:20:48 | 只看該作者
28#
發(fā)表于 2025-3-26 09:50:35 | 只看該作者
Reasons for Concern Over Impacts of Harvesting,ns over wildlife habitat. However, taking the assumption that harvesting will continue and likely even intensify in many commercial forests around the world, the topic of harvesting effects upon long-term site productivity is timely and will certainly fill this volume.
29#
發(fā)表于 2025-3-26 14:37:37 | 只看該作者
Identifying Key Processes Affecting Long-Term Site Productivity, increase, the long-term productivity of those forests that are to be managed for wood fibre has never been greater. Sustainability is high on the political agenda of many nations, and nowhere is this more true than in forestry.
30#
發(fā)表于 2025-3-26 18:26:45 | 只看該作者
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