نتایج جستجو برای: broadleaved trees

تعداد نتایج: 90427  

Journal: :bulletin of the iranian mathematical society 2013
m. javanian

we study the limiting distribution of the degree of a given node in a scaled attachment random recursive tree, a generalized random recursive tree, which is introduced by devroye et. al (2011). in a scaled attachment random recursive tree, every node $i$ is attached to the node labeled $lfloor ix_i floor$ where $x_0$, $ldots$ , $x_n$ is a sequence of i.i.d. random variables, with support in [0,...

2016
Shangbin Bai Richard T. Conant Guomo Zhou Yixiang Wang Nan Wang Yanhua Li Kaiqiang Zhang

Across southern China, Moso bamboo has been encroaching on most neighboring secondary broad-leaved forests and/or coniferous plantations, leading to the land cover changes that alter abiotic and biotic conditions. Little is known about how this conversion alters soil carbon (C) and nitrogen (N). We selected three sites, each with three plots arrayed along the bamboo encroachment pathway: moso b...

2007
Meg L. Pollock William G. Lee Susan Walker Guy Forrester

Ratites (ostriches Struthio camelus) and ungulates (red deer Cervus elaphus scoticus and goats Capra hircus) were presented with 14 indigenous shrubs in cafeteriastyle trials. The shrubs represented the spectrum of woody plant architecture, ranging from broadleaved monopodial species through to small-leaved highly branched divaricates. Trials were stopped when almost all shoots of the plant exp...

Journal: :Zootaxa 2015
Toyohei Saigusa

A new genus, Diacanthomyia gen. nov. assigned to the subtribe Thyreophorina of the family Piophilidae is described based on a new species, Diacanthomyia okidoi sp. nov. recently found in Honshu and Kyushu, Japan. The new genus is somewhat similar to the European Centrophlebomyia of the subtribe. However, the new genus is distinguished from the known genera of the subtribe by the following combi...

2017
Bin Wang Mingze Li Wenyi Fan Ying Yu Jing M. Chen

Net primary productivity (NPP) is a key component in the terrestrial ecosystem carbon cycle, and it varies according to stand age and site class index (SCI) for different forest types. Here we report an improved method for describing the relationships between NPP and stand age at various SCI values for the main forest types and groups in Heilongjiang Province, China, using existing yield tables...

Journal: :Current forestry reports 2022

Abstract Purpose of the Review The application cut-to-length (CTL) technology for harvesting and processing timber from broadleaved tree species is a challenging process, due to thick branches, stem sweep, forks high wood density. objective this review was describe current state harvester use characterise effectiveness mechanised forest operations mixed stands in Europe, paying particular atten...

2016
YIHUA XIAO FUCHUN TONG SHIRONG LIU YUANWEN KUANG BUFENG CHEN JUNBIAO HUANG Emma J. Rochelle-Newall

In order to determine the impact of forest conversions on labile organic carbon fractions, soils at depths of 0 10, 10 30 and 30 50 cm were collected from three types of forest: secondary monsoon evergreen broadleaved forest (BF), mixed pine and broadleaved forest (MF) and Masson pine forest (PF) in subtropical China. The light fraction organic carbon (LFOC), particulate organic carbon (POC) an...

2016
José Calado Barros José Godinho Calado Gottlieb Basch Mário José Carvalho

A study was carried out over a two year period (2009/2010 and 2012/2013) on an experimental farm in the Alentejo region (Beja), in southern Portugal where rainfed malt barley (Hordeum distichum L.) is sown at the end of autumn or beginning of winter (November–December). The aim of this experiment was to study the efficiency of the herbicide iodosulfuron-methyl-sodium to control post-emergence b...

2014
Xingzhao Liu Wei Meng Guohua Liang Kun Li Weiqiang Xu Liujing Huang Junhua Yan

This paper aims to establish evidence for available phosphorous (AP) binding with total nitrogen (N) in subtropical forest soils. Soil organic carbon (SOC), total N, total phosphorous (P) and AP concentration were measured for three contrasting forest types in southern China: Masson pine forest (MPF), coniferous and broadleaved mixed forest (CBMF) and monsoon evergreen broadleaved forest (MEBF)...

Journal: :Remote Sensing 2021

The importance of mixed forests is increasingly recognized on a scientific level, due to their greater productivity and efficiency in resource use, compared pure stands. However, reliable quantification the actual spatial extent stands fine scale still lacking. Indeed, classification mapping populations, especially with semi-automatic procedures, has been challenging issue up date. main objecti...

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