نتایج جستجو برای: broadleaved trees

تعداد نتایج: 90427  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پایه 1387

چکیده ندارد.

2013
Zhiyong Zhou Chao Guo He Meng

The basal respiration rate at 10°C (R10) and the temperature sensitivity of soil respiration (Q10) are two premier parameters in predicting the instantaneous rate of soil respiration at a given temperature. However, the mechanisms underlying the spatial variations in R10 and Q10 are not quite clear. R10 and Q10 were calculated using an exponential function with measured soil respiration and soi...

Journal: :Silva Fennica 2023

Tree species identification constitutes a bottleneck in remote sensing applications. Waveform LiDAR has been shown to offer potential over discrete-return observations, and we assessed if the combination of two-wavelength waveform data can lead further improvements. A total 2532 trees representing seven living dead conifer deciduous classes found Hyytiälä forests southern Finland were included ...

2016
Shangbin Bai Yixiang Wang Richard T. Conant Guomo Zhou Yong Xu Nan Wang Feiyan Fang Juan Chen

Native species are generally thought not to encroach on adjacent natural forest without human intervention. However, the phenomenon that native moso bamboo may encroach on surrounding natural forests by itself occurred in China. To certificate this encroaching process, we employed the transition front approach to monitor the native moso bamboo population dynamics in native Chinese fir and everg...

2015
Jan Hackenberg Marc Wassenberg Heinrich Spiecker Dongjing Sun Xinlian Liang

This paper presents a method for predicting the above ground leafless biomass of trees in a non destructive way. We utilize terrestrial laserscan data to predict the volume of the trees. Combining volume estimates with density measurements leads to biomass predictions. Thirty-six trees of three different species are analyzed: evergreen coniferous Pinus massoniana, evergreen broadleaved Erythrop...

2015
Alain Roques Jian-ting Fan Béatrice Courtial Yan-zhuo Zhang Annie Yart Marie-Anne Auger-Rozenberg Olivier Denux Marc Kenis Richard Baker Jiang-hua Sun Daniel Doucet

Quarantine measures to prevent insect invasions tend to focus on well-known pests but a large proportion of the recent invaders were not known to cause significant damage in their native range, or were not even known to science before their introduction. A novel method is proposed to detect new potential pests of woody plants in their region of origin before they are introduced to a new contine...

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