نتایج جستجو برای: p deltoides marsh

تعداد نتایج: 1274918  

ژورنال: جنگل ایران 2018

مدیریت جست در روش بهره‌برداری کوتاه‌مدت سبب می‌شود که جست‌های باقی‌مانده از مواد غذایی، نور و آب بیشتری برخوردار شوند و در نهایت تنه‌های قطورتر و بلندتری تولید کنند. هدف این تحقیق، ارزیابی تولید چوب برخی ارقام صنوبر با استفاده از تیمار مدیریت جست‌ها در دورۀ دوم برداشت بود. پنج کلن صنوبر از گونۀ P. deltoides و دورگ‌های P. xcanadensis با سه تیمار مدیریت جست شامل یک‌جست، دوجست و ...

2013
Joseph A. M. Smith

Many sea level rise adaptation plans emphasize the protection of adjacent uplands to allow for inland salt marsh migration, but little empirical information exists on this process. Using aerial photos from 1930 and 2006 of Delaware Estuary coastal habitats in New Jersey, I documented the rate of coastal forest retreat and the rate of inland salt marsh migration across 101.1 km of undeveloped sa...

Journal: :The New phytologist 2005
Janice E K Cooke Timothy A Martin John M Davis

Nitrogen fertilization induces dramatic changes in the growth and development of plants, including forest trees. In this study we examined short-term responses of hybrid poplar, Populus balsamifera ssp. trichocarpa x deltoides, to N fertilization. Glasshouse-grown saplings subjected to limiting, intermediate, and luxuriant levels of ammonium nitrate over a 28 d time course demonstrated rapid ch...

Journal: :Phytopathology 2000
G M Tabor T L Kubisiak N B Klopfenstein R B Hall H S McNabb

ABSTRACT In the north central United States, leaf rust caused by Melampsora medusae is a major disease problem on Populus deltoides. In this study we identified molecular markers linked to a M. medusae resistance locus (Lrd1) that was segregating 1:1 within an intraspecific P. deltoides family (C9425DD). Previous field results were confirmed in the controlled environment of a growth chamber thr...

2015
Emily Caitlin Adams Frank P. Day Eric Walters

BLUE CARBON IN FRESHWATER / BRACKISH MARSHES ON THE BARRIER ISLANDS OF VIRGINIA: ABOVEGROUND NET PRIMARY PRODUCTIVITY AND CARBON POOLS Emily Caitlin Adams Old Dominion University, 2015 Director: Dr. Frank P. Day “Blue carbon” is a relatively new concept describing carbon distributed tidally and sequestered via net production within coastal ecosystems, including seagrass beds, mangrove forests, ...

2016
Mauro W. Bonatto Luiz Kotze Marcia Orlandoski Ricardo Tsuchyia Carlos A. de Carvalho Doryane Lima Gustavo Kurachi Ivan R.B. Orso Lorete Kotze

BACKGROUND AND STUDY AIMS Celiac disease (CD) is a chronic systemic autoimmune disorder affecting genetically predisposed individuals, triggered and maintained by the ingestion of gluten. Triggered and maintained by the ingestion of gluten, celiac disease is a chronic systemic autoimmune disorder affecting genetically predisposed individuals. Persistent related inflammation of the duodenal muco...

2014
Lisa M. Schile John C. Callaway James T. Morris Diana Stralberg V. Thomas Parker Maggi Kelly

Tidal marshes maintain elevation relative to sea level through accumulation of mineral and organic matter, yet this dynamic accumulation feedback mechanism has not been modeled widely in the context of accelerated sea-level rise. Uncertainties exist about tidal marsh resiliency to accelerated sea-level rise, reduced sediment supply, reduced plant productivity under increased inundation, and lim...

2014
Yunyao Jiang Myeong-Hyeon Wang

Synurus deltoides (Aiton) Nakai, belonging to the Compositae family, is an edible plant widely distributed in Northeast Asia. In this study, we examined the mechanisms underlying the immunomodulative effects of the ethanol extract of S. deltoides (SDE). The SDE extract strongly down-regulated the mRNA expression of the inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and tumour...

Journal: :The New phytologist 2005
Cecilia Diara Antonella Castagna Barbara Baldan Anna Mensuali Sodi Tobias Sahr Christian Langebartels Luca Sebastiani Annamaria Ranieri

Hydrogen peroxide (H(2)O(2)), ethylene, 1-aminocyclopropane-1-carboxylic acid (ACC) and salicylic acid (SA) concentrations and ACC synthase (ACS) gene expression were measured to establish whether the high sensitivity of the Populus deltoides x maximowiczii clone Eridano to ozone (O(3)) exposure, compared with the O(3)-resistant Populus deltoides x euramericana clone I-214, is attributable to d...

ژورنال: :پژوهش های علوم و فناوری چوب و جنگل 0
پوریا شهسواری دانشجو احمد گلچین هیات علمی بهزاد امیری دانشجو عبدالله موسوی هیات علمی مرکز تحقیقات صنوبر صفرابسته

یکی از راهکارهای شناسایی بهترین گونه درختی اثرگذار بر گردش مناسب عناصر غذایی در خاک و گیاه و همچنین چرخه کربن، مطالعه کیفیت خاک و کمیت عناصر غذایی خاک می باشد. برای رسیدن به این هدف سه نوع پوشش جنگلی صنوبر و یک نوع پوشش جنگلی سوزنی برگ در منطقه صفرابسته گیلان انتخاب شد. برخی از خصوصیات شیمیایی اعم از واکنش، آهک و مواد آلی خاک، همچنین مقدار عناصر غذایی قابل جذب (,n ,p ,k ca ,mg وعناصر کم مصرف) ز...

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