نتایج جستجو برای: radial growth trees

تعداد نتایج: 957374  

2015
Yuan Jiang Yiping Zhang Yuanyuan Guo Muyi Kang Mingchang Wang Biao Wang Eric Jokela

Altitude-related climatic factors, especially temperature, are important factors that affect tree growth in mountain forest ecosystems. The aims of this study were to estimate the intra-annual radial growth differences of Larix principis-rupprechtii (L. principis-rupprechtii) between its upper and lower distribution limits, at 2740 and 2040 m a.s.l, respectively. Dynamics of xylem growth were o...

Journal: :Forests 2022

Intensive livestock management impacts forest and trees in different ways. Pig manure is a major source of nitrogen (N) pollution surface ground waters some European regions such as north-eastern Spain, but it understudied how application agroforestry systems. How pig affects tree radial growth the N cycle was assessed by measuring concentrations soil, leaves wood δ15N tree-ring two species wid...

Journal: :Agricultural and Forest Meteorology 2022

The increased frequency and severity of drought events due to climate warming is negatively affecting tree radial growth, particularly in drought-prone regions, such as, e.g., the Mediterranean. In this change hotspot, populations same species may show different growth responses climate, great variety microclimates environments that characterise biogeographic region. study, we analysed growth-c...

Journal: :Tree physiology 2012
Teresa E Gimeno J Julio Camarero Elena Granda Beatriz Pías Fernando Valladares

Juniperus thurifera L. is an endemic conifer of the western Mediterranean Basin where it is subjected to a severe climatic stress characterized by low winter temperatures and summer drought. Given the trend of increased warming-induced drought stress in this area and the climatic sensitivity of this species, we expect a negative impact of climate change on growth and ecophysiological performanc...

Journal: :Tree physiology 2014
Brandy J Saffell Frederick C Meinzer David R Woodruff David C Shaw Steven L Voelker Barbara Lachenbruch Kristen Falk

Stored non-structural carbohydrates (NSCs) could play an important role in tree survival in the face of a changing climate and associated stress-related mortality. We explored the effects of the stomata-blocking and defoliating fungal disease called Swiss needle cast on Douglas-fir carbohydrate reserves and growth to evaluate the extent to which NSCs can be mobilized under natural conditions of...

Journal: :Forests 2021

It is important to explore the responses of radial tree growth in different regions understand patterns and enhance forest management protection with climate change. We constructed ring width chronologies Picea crassifolia from Qilian Mountains northwest China. used Pearson correlation moving analyze main factors limiting trees temporal stability growth–climate relationship, while spatial resul...

Journal: :Fire 2023

In seasonally dry forests, wildfires can reduce competition for soil water among trees and improve forest resilience to drought. We tested this idea by comparing tree-ring growth patterns of Pinus pinea stands subjected two prescribed burning intensities (H, high; L, low) compared them with unburned (U) control in southwestern Spain. Then, we assessed post-growth droughts that occurred before (...

2007
Jeffrey Pine D. W. Johnson

Thinning utilizing cut-to-length and whole-tree harvesting systems with subsequent underburning were assessed for their influence on stand productivity and mensurational variables in uneven-aged Jeffrey pine (Pinus jeffreyi Grev. & Balf.) on the Tahoe National Forest. Both intermediate and a combination of dominant and codominant crown class trees were selected within each treatment to evaluate...

Journal: :Annals of botany 2003
D W Woodcock A D Shier

The radial increases in wood specific gravity known in many tree species have been interpreted as providing mechanical support in response to the stresses associated with wind loading. This interpretation leads to the hypothesis that individuals reaching the canopy should (1) be more likely to have radial increases in specific gravity and (2) exhibit greater increases than individuals in the su...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2011
N J Loader R P D Walsh I Robertson K Bidin R C Ong G Reynolds D McCarroll M Gagen G H F Young

Stable carbon isotope (δ(13)C) series were developed from analysis of sequential radial wood increments from AD 1850 to AD 2009 for four mature primary rainforest trees from the Danum and Imbak areas of Sabah, Malaysia. The aseasonal equatorial climate meant that conventional dendrochronology was not possible as the tree species investigated do not exhibit clear annual rings or dateable growth ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید