نتایج جستجو برای: cover plants

تعداد نتایج: 304850  

Journal: :Plant biology 2010
F Baptist C Flahaut P Streb P Choler

Climate change effects on snow cover and thermic regime in alpine tundra might lead to a longer growing season, but could also increase risks to plants from spring frost events. Alpine snowbeds, i.e. alpine tundra from late snowmelt sites, might be particularly susceptible to such climatic changes. Snowbed communities were grown in large monoliths for two consecutive years, under different mani...

Journal: :Ecological applications : a publication of the Ecological Society of America 2008
Carol A Johnston Dana M Ghioca Mirela Tulbure Barbara L Bedford Michael Bourdaghs Christin B Frieswyk Lynn Vaccaro Joy B Zedler

Emergent plants can be suitable indicators of anthropogenic stress in coastal wetlands if their responses to natural environmental variation can be parsed from their responses to human activities in and around wetlands. We used hierarchical partitioning to evaluate the independent influence of geomorphology, geography, and anthropogenic stress on common wetland plants of the U.S. Great Lakes co...

Journal: :پژوهش های زراعی ایران 0
محسن جهان محمد بهزاد امیری مهسا اقحوانی شجری محمد کاظم تهامی

in recent years, in order to enhance the health of agroecosystems, concerns on ecological inputs especially to produce medicinal plants, has been increased. in order to evaluate the effects of winter cover crops on pgprs activities and soil nitrogen content in simultaneous application of organic manures and biological fertilizer in a low input production system of cucurbita pepo under minimum t...

Journal: :جغرافیا و برنامه ریزی محیطی 0

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Journal: :international journal of advanced biological and biomedical research 2013
m.r. hemami s.s. mohaghegh a. rohina s. sobhani ardakani

since density is considered as one of the most important numerical indices to explain quantitative values of a plant community by affecting on many aspects and activity of ecosystem, on the other hand, awareness about plants distribution pattern in environment is an essential preparation for measurement and study of vegetative cover, therefore, in this research determination of density and dist...

Journal: :E3S web of conferences 2021

One of the elements that ensure sustainability environment is vegetation cover. The cover contributes to balanced functioning ecosystems. It national parks rich in phytodiversity attract attention scientists. article presents an ecological analysis flora Kremenets Mountains National Park. research was carried out areas mountains Divochi Skeli, Strakhova, Masliatyn, Chercha, Zamkova, Bozha. 10 f...

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