British researchers set up a "flowering index" to show that flowers bloom earlier and earlier

It took 250 years to record the first opening time of 400000 flowers of 405 plants each year Now British researchers have compiled a "flowering index" to measure the pace of "spring girl" The index shows that "spring girl" comes earlier and earlier According to the "flowering index" of early flowering, from 1985 to 2009, the average flowering day of plants symbolizing the coming of spring was May 20, 12.7 days earlier than the average from 1835 to 1859, and 2.2 days earlier than the average from 1910 to 1934 Since the record of flowering time in 1760, the average flowering day in the last 25 years is the earliest Since its establishment in 1875, the Royal Society of Meteorology has systematically recorded the date of flowering throughout the UK Before that, more than 100 years ago, professional and amateur plant researchers have recorded a lot of date data The data includes 50 years of continuous observation of flowering records by the same person at the same place, and occasionally recorded by someone passing through a certain place In 2005, the BBC launched a campaign called "observing spring", which mobilized the public to observe and record the changes of wild animals and plants every spring Richard Smithers is one of the researchers who compiled the "flowering index" He told the BBC that they had "pooled and indexed" a lot of that data The temperature of central England has been recorded in England since 1659 Smithers said the flowering index was "largely in step with temperature." Later this year, the BBC reported that Britain's flowering day is expected to return to the situation before the 1970s The flowering time of Narcissus, snowdrop and magnolia is about 3 weeks later than the average in the past decades Bluebells are not expected to bloom until May or early June The British woodland Foundation reported that in mid March, the foundation usually received reports of thousands of black thorn plum and hawthorn trees blooming, and hundreds of winter flowers, but this year, the news of these flowers bloomed was delayed Last December was the coldest month in 15 years in the UK, January was the coldest month in nearly 13 years, and February was the coldest month in nearly 19 years Despite the late arrival of spring this year, it does not represent a long-term situation, the foundation said A study released earlier this year showed that spring has begun 11 days earlier in recent years in the UK than it did 30 years ago The foundation called on the public to report spring messages, such as the first snow lotus seen, in order to "understand the impact of climate change on native species in the UK" Smithers praised the important role of ordinary people in scientific research It was the participation of a large number of people that made the research obtain a wide range of data He believes that the potential for people to participate in scientific research through the Internet is far from being developed, and such participation will further enrich people's understanding of nature The compilation of flowering index is not the first study on the relationship between climate change and natural phenomena, but some previous studies often involve either the time span is not long enough, or the research records are not complete enough Smithers said their research "draws on all available data." They are considering expanding their research to understand the natural response of a region or even the world to temperature changes Aiming at the phenomenon of late spring this year, he said that the weather is different from the climate "Every year is different from the weather every year, but the climate needs to span for decades." "We've got used to the warm spring, so we're surprised by the cold this year," Smithers said