نتایج جستجو برای: thinning

تعداد نتایج: 10752  

Journal: :Tree physiology 2005
Jianwu Tang Ye Qi Ming Xu Laurent Misson Allen H Goldstein

Soil respiration is controlled by soil temperature, soil water, fine roots, microbial activity, and soil physical and chemical properties. Forest thinning changes soil temperature, soil water content, and root density and activity, and thus changes soil respiration. We measured soil respiration monthly and soil temperature and volumetric soil water continuously in a young ponderosa pine (Pinus ...

Journal: :The Forestry Chronicle 1936

Journal: :Journal of Cell Biology 2005

2015
Xiongqing Zhang Jianguo Zhang Aiguo Duan Yong Deng

Self-thinning is a dynamic equilibrium between forest growth and mortality at full site occupancy. Parameters of the self-thinning lines are often confounded by differences across various stand and site conditions. For overcoming the problem of hierarchical and repeated measures, we used hierarchical Bayesian method to estimate the self-thinning line. The results showed that the self-thinning l...

Journal: :IEEE Trans. Pattern Anal. Mach. Intell. 1992
Louisa Lam Seong-Whan Lee Ching Y. Suen

This article is a comprehensive survey of thinning methodologies. It discusses the wide range of thinning algorithms, including iterative deletion of pixels and nonpixel-based methods, whereas skeletonization algorithms based on medial axis and other distance transforms will be the subject matter of a subsequent study. This self-contained paper begins with an overview of the iterative thinning ...

2017
Xiangrong Cheng Mukui Yu Geoff Wang Brian D. Strahm

Soil organic carbon (SOC) fractions, along with soil properties, are greatly affected by forest management. In this study, three thinning treatments: control (conventional management mode), moderate thinning intensity and heavy thinning intensity, were applied in Chinese fir (Cunninghamia lanceolata) plantations in eastern China. The dissolved organic carbon (DOC), soil light fraction organic c...

Journal: :NeuroImage 2015
Dongming Zhou Catherine Lebel Sarah Treit Alan C. Evans Christian Beaulieu

It remains unclear if changes of the cerebral cortex occur gradually from childhood to adulthood, or if adolescence marks a differential period of cortical development. In the current study of 90 healthy volunteers aged 5-32years (48 females, 85 right handed) with 180 scans (2 scans for each participant with ~4year gaps), thinning of overall mean thickness and across the four major cortical lob...

2000
James S. Meadows

Four thinning treatments were applied to a red oak-sweetgum (Quercus spp.-Liquidambar styraciha L.) stand on a minor streambottom site in west-central Alabama in 1994: (1) unthinned control; (2) light thinning to 70-75 percent residual stocking; (3) heavy thinning to 50-55 percent residual stocking; and (4) B-line thinning to desirable residual stocking for bottomland hardwoods, as recommended ...

Journal: :علوم باغبانی ایران 0
میثم الیاسی مقدم کارشناس ارشد ، دانشکدۀ کشاورزی، دانشگاه زنجان طاهر برزگر استادیار، دانشکدۀ کشاورزی، دانشگاه زنجان زهرا قهرمانی استادیار، دانشکدۀ کشاورزی، دانشگاه زنجان

in order to study the effects of foliar application of naa and plant thinning on growth, yield and fruit quality of melon genotype khatooni, the experiment was conducted in a randomized complete block design with three replications at research field of faculty of agriculture, university of zanjan. treatments consisted of foliar application of naa at three levels (25, 50 and 100 mg.l-1 at 4-6 tr...

2017
Alexander Gradel Christian Ammer Batsaikhan Ganbaatar Sven Wagner

The forests of North Mongolia are largely dominated either by larch (Larix sibirica Ledeb.) or birch (Betula platyphylla Sukaczev). The increasing demand for timber and firewood is currently met by removal of wood from these forest stands. Therefore, silvicultural approaches that account for both utilization and protection are needed. Thinning trials were established in the research area Altans...

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