Results 41 to 50 of about 521,602 (165)
Effect of pre-stratification on increasing the precision of cluster sampling method to estimate forest attributes (Case study: Bayangan, Kermanshah) [PDF]
مجله جنگل ایران, 2017 In this study a pre-stratification was applied to estimate quantitative attributes of oak forests by cluster sampling method in Bayangan district, Kermanshah province.
A. Nouri +3 more
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Remote Sensing, 2016 Due to the high cost of traditional forest plot measurements, the availability of up-to-date in situ forest inventory data has been a bottleneck for remote sensing image analysis in support of the important global forest biomass mapping.
Matthieu Molinier +6 more
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Evaluation of capability of IRS-P6 satellite data for predicting quantitative attributes of forests (case study: Northern Zagros forests) [PDF]
مجله جنگل ایران, 2012 The aim of this research was to predict tree density and basal area using IRS-P6 satellite data in the northern Zagros forests. A random-systematic sampling grid consists of 312 circular sample plots (each plot, 0.1 ha) were used to collect field data ...
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Forest Science and Technology, 2019 This study was conducted to determine the effects of different thinning intensities on the DBH growth of Pinus koraiensis and Larix kaempferi trees. Permanent monitoring plots were installed in 26 P. koraiensis plantations and 36 L. kaempferi plantations
Yeongwan Seo +5 more
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Across a macro-ecological gradient forest competition is strongest at the most productive sites
Frontiers in Plant Science, 2014 We tested the hypothesis that the effect of forest basal area on tree growth interacts with macro-ecological gradients of primary productivity, using a large dataset of eucalypt tree growth collected across temperate and sub- tropical mesic Australia. To
Lynda Dorothy Prior, David eBowman
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Capturing spiral radial growth of conifers using the superellipse to model tree-ring geometric shape
Frontiers in Plant Science, 2015 Tree-rings are often assumed to approximate a circular shape when estimating forest productivity and carbon dynamics. However, tree rings are rarely, if ever, circular, thereby possibly resulting in under- or over-estimation in forest productivity and ...
Pei-Jian eShi +9 more
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Journal of Agricultural Sciences, 2017 Excessive grazing pressure on rangeland vegetation reduces the basal area value of vegetation and also changes the botanic composition. This study examined the piosphere effects of livestock grazing on rangeland vegetation based on distance from a ...
Mahmut Reis, Nurşen Şen
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A basal area model responsive to thinning for a plantation forest
Environment International, 2001 The Tarawera Valley spacing and thinning trial data were used to develop a dynamical model for basal area prediction that is responsive to both spacing and thinning. The model is a 'critically damped' second-order model, i.e., it simulates a sigmoidal response, before and after thinning.
openaire +2 more sources
Frontiers in Forests and Global ChangeForestry management practices, such as thinning and pruning, significantly influence biomass accumulation and carbon sequestration, which are critical for climate change mitigation.
Jamshid Ali +8 more
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Ecosystem Health and Sustainability, 2019 Species composition, structure, and regeneration status of trees were assessed in five dry Afromontane forests. In each of the forests, trees having ≥5 cm diameter at breast height were identified and measured in 80 quadrats (20 × 20 m2).
Getaneh Gebeyehu +3 more
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