نتایج جستجو برای: broadleaf

تعداد نتایج: 1235  

Journal: :Forest Ecology and Management 2023

The tree species composition of Swiss forests is influenced by both environmental conditions and centuries forest management, resulting in varying degrees naturalness. Here, we estimate the naturalness comparing (i.e., dominance presence/absence species) recorded national inventory with idealised potential natural forests. We aimed to (1) evaluate different types, (2) identify main drivers low ...

Journal: :حفاظت گیاهان 0
ولی الله پور ولی الله پور خاکزاد خاکزاد قلی پوری قلی پوری براری براری

abstract limited number of herbicides are used to control weeds in soybean, which has herbicides resistance in consequence, so cultural weed management can be used in order to evaluate the effect of planting dates of soybean cultivars on weed management an experiment was conducted in randomized complete block design (rcbd) with four replications and with strip plot arrangement in sari. two plan...

2015
Jatinder S. Aulakh Amit J. Jhala

Because of the increasing number of glyphosate-resistant weeds, alternate herbicide-resistant crops and herbicides with different modes of action are required to protect crop yield. Glufosinate is a broad-spectrum POST herbicide for weed control in glufosinate-resistant crops, including soybean. The objective of this study was to compare herbicide programs with glufosinate applied singly at lat...

Journal: :Revista de biologia tropical 2014
Milena Fermina Rosenfield Alexandre F Souza

A variety of environmental and biotic factors determine vegetation growth and affect plant biomass accumulation. From temperature to species composition, aboveground biomass storage in forest ecosystems is influenced by a number of variables and usually presents a high spatial variability. With this focus, the aim of the study was to evaluate the variables affecting live aboveground forest biom...

2013
Stephen L. Young STEVE L. YOUNG

Natural product herbicides for vegetation control are being considered as alternatives to synthetic herbicides by many public agencies. Studies were conducted along roadsides at the Hopland Research and Extension Center (HREC) in 2001 and 2002 and on California State Route 29 (SR29) in 2002 to evaluate acetic acid, pine oil, and plant essentials compared with glyphosate for control of herbaceou...

2010
Dominique Guyon Marie Guillot Yann Vitasse Hervé Cardot Olivier Hagolle Sylvain Delzon Jean-Pierre Wigneron

a r t i c l e i n f o In mountain forest ecosystems where elevation gradients are prominent, temperature gradient-based phenological variability can be high. However, there are few studies that assess the capability of remote sensing observations to monitor ecosystem phenology along elevation gradients, despite their relevance under climate change. We investigated the potential of medium resolu...

2014
NEIL PEDERSON JAMES M. DYER RYAN W. MCEWAN AMY E. HESSL CARY J. MOCK DAVID A. ORWIG HARALD E. RIEDER BENJAMIN I. COOK

In humid, broadleaf-dominated forests where gap dynamics and partial canopy mortality appears to dominate the disturbance regime at local scales, paleoecological evidence shows alteration at regional-scales associated with climatic change. Yet, little evidence of these broad-scale events exists in extant forests. To evaluate the potential for the occurrence of large-scale disturbance, we used 7...

2015
A. Ershadi M. F. McCabe

The impact ofmodel structure andparameterization on the estimation of evaporation is investigated across a range of Penman–Monteith type models. To examine the role of model structure on flux retrievals, three different retrieval schemes are compared. The schemes include a traditional single-source Penman– Monteith model (Monteith, 1965), a two-layer model based on Shuttleworth and Wallace (198...

Journal: :Forests 2023

Aboveground wood carbon (AWC) stocks in forest ecosystems are mediated by biotic and abiotic variables. Understanding the internal regulatory mechanisms of forests is important for future management global climate change mitigation. However, how these factors affect AWC subtropical mixed remains poorly understood. Using a database from National Forest Inventory (NFI) China, we observed effects ...

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