'Bully' plants that thrive in nitrogen pumped out by diesel cars and industry are mastered more delicate flowers such as the Bell, warns a report. More than one-third of the flowering plants struggle in soil rich in nitrogen, which can be left more vulnerable to drought, Frost and diseases. The charity Plantlife said the Bluebells delicate, favorite ofa recently rated almost as bumblebees threatened in England, is oneof the at risk.
So the bird's - foot trefoil, yellow member of the named pea family resemblance of its flowers with the claws of birds. Orchids, dependentof fungi that is extremely sensitive to nitrogen, also could be in danger. The research, carried out with the support of the University of Lancaster and endorsed by the national trust, said 37 percent of plants with flowers of Britain prefers conditions low in nutrients, putting themat risk of nitrogen, which also seeps into the soil of agriculture. Dr Trevor Dines of vegetation, said: ' nettles, Hogweed, and hemlock - bully species that thrive in the soil in excess of nitrogen - are drowning vulnerable and rare wild plants that can survive only in less nutrient-rich soil.' Concern is building over the toxic fumes from diesel, with thenitrogen particles of oxide produced related to the death of 23,500 people in Britain each year. But also get nitrogen in the soil, depositeddirectly from the air or in rain. Normally essential for plants, becauseit helps them grow, excess nitrogen can be too much for many wild flowers. Dr. Dines said: ' we are forced to the natural world a diet of junk food's nutrient rich, and it is having a devastating impact. Once diverse habitats are becoming monotonous green badlands where survive only thugs and other more delicate plants are intimidated from existence.' fragile chime suffers as aggressive weeds such as nettles atseveral feet. Flax fairy, a plant of the meadow with white star-shapedflowers, is also vulnerable as how grasses species of fast-growing to gain a 'competitive advantage' through the added nitrogen. The study of flora says that 90 percent of sensitive habitats to nitrogen in England and Wales, including heathland and sand dunes, suffers from excessive pollution. This means less diversity such as nettles and hogweed, with evidence suggesting that they can affect birds and butterflies that feed on them. While nitrogen emissions have been reduced inthe last 20 years, the study says that it could take decades for the soilback to normal.
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