نتایج جستجو برای: Fire plant

تعداد نتایج: 434843  

Journal: :journal of rangeland science 0
jalil ahmadi ferdowsi university of iran mohammad farzam ferdowsi university of mashhad amir lagzian ferdowsi university of mashhad

fire is one of the incorporate vegetation management practices for grasslands and semi-arid rangelands. it may affect symbiotic relationship between range plants and mycorrhiza. accordingly, this research was aimed to investigate the effects of a spring prescribed fire on the symbiotic relationships between mycorrhiza and 6 plant species. the study was conducted in a semi-arid steppe rangeland ...

Fire is one of the incorporate vegetation management practices for grasslands and semi-arid rangelands. It may affect symbiotic relationship between range plants and mycorrhiza. Accordingly, this research was aimed to investigate the effects of a spring prescribed fire on the symbiotic relationships between mycorrhiza and 6 plant species. The study was conducted in a semi-arid steppe rangeland ...

ژورنال: سلامت کار ایران 2015

Background and aims:  From the 70s onwards, safety engineering made significant progress in developing techniques and regulations relating to the fire. The first, this methods was considered after happening accidents to prevent similar accidents. But with the advancement of technology, the prediction and prevention of fire in complex industries such as power plant finds Important. This study is...

2003
R. DÍAZ-DELGADO F. LLORET

In this paper we analyse the interactions between fire severity (plant damage) and plant regeneration after fire by means of remote sensing imagery and a field fire severity map. A severity map was constructed over a large fire (2692 ha) occurring in July 1994 in the Barcelona province (north-east of Spain). Seven severity classes were assigned to the apparent plant damage as a function of burn...

2006
Jill F. Johnstone

The present study used overlapping burn scars from natural wildfires to examine the effects of changes in the fire-free interval on early successional plant communities in boreal forests of centralYukon Territory, Canada. Data on plant community composition and residual organic material were collected in the first decade of post-fire regeneration in two study areas with recent fire overlap. Sit...

ژورنال: مرتع 2023

Abstract Background and objectives: Fire as a frequent phenomenon in rangelands and because of its complicated and different effects on natural ecosystems, has great importance. Awareness of such fire effects on vegetation cover in point of rangeland management after fire is important and helps better Understanding and sustainable management of rangelands. Changing in plant structure and compo...

ژورنال: سلامت کار ایران 2018

Background and aims: Providing the adequate flow and water pressure in the firefighting network of the power plants requires the proper design and analysis of the firefighting system. This study aimed to model and hydraulic analysis the fire network in a combined cycle power plant to determine the network efficiency in the extinguishing of the possible fire. Methods: In the present study, the ...

Journal: :iranian journal of pharmaceutical sciences 0
ragunathan muthuswamy department of pharmacognosy, nehru college of pharmacy, pampady, thiruvilwamala, thrissur district, kerala–680 597, india senthamarai r periyar college of pharmaceutical sciences, periyar centenary educational complex, k. sathanoor main road, tiruchirappalli-620021, tamilnadu, india.

root ofplumbago indica linn is used in ayurveda and siddha medicine for the treatment of colic inflammations bronchitis, helminthiasis, hemorrhoids, elephantiasis, hepatosplenomegaly, amenorrhea, odontalgia, piles, and diabetes. the present study aims to investigate the anatomical characters of thin and thick root and to confirm the physicochemical characters of the root. anatomical studies and...

2016
MELINDA D. SMITH ALAN K. KNAPP SCOTT L. COLLINS DERON E. BURKEPILE KEVIN P. KIRKMAN SALLY E. KOERNER

Fire and grazing, key determinants of structure and function of savanna grasslands worldwide, have been extensively altered by humans. We used existing long-term manipulations of fire and grazing in North American and South African mesic savanna grasslands, as well as new experiments, to determine whether the impacts of fire and grazing by large herbivores differed between these systems. We fou...

2007
David woodlands Peterson Peter

Questions: How do fire frequency, tree canopy cover, and their interactions influence cover of grasses, forbs and understorey woody plants in oak savannas and woodlands? Location: Minnesota, USA. Methods: We measured plant functional group cover and tree canopy cover on permanent plots within a long-term prescribed fire frequency experiment and used hierarchical linear modeling to assess plant ...

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