There are more than 9,000 unknown trees in the world ... most of them are in the crisis of extinction
Tourists observing birds from canopy in a Manoo biological area in Madre de Dios, Southern Amazon area in Peru.Shooted on November 2, 2009.
A large -scale survey for forests around the world has estimated that there are 9,200 unknown trees.[See all images] There are more than 9000 unknown trees in the world ... Most of these mysterious trees are rare in the extinction crisis, and they are classified inside.It is said that it may be extinct before.It is thought that about 40 % of unknown tree species exist in South America, and most of them are in the Amazon rainforest.A new study has estimated that the forest has about 9,200 kinds of trees that have not yet been found by scientists.In 2022, more than 100 scientists around the world have built a global forest database, which has become the largest so far, and estimates how many types of undiscovered trees are based on scientific support.On January 31, it was published in the American Science Academy Kinri.According to this paper, many of the 9200 kinds of trees are only a little rarely growing in a limited area, and are extremely rare, so they are not discovered scientifically.Therefore, these trees are particularly vulnerable to climate change."Jingjing Liang), a co -author of Paddue University and co -author of this dissertation," is very likely to be extinct before discovering un detected tree species. "I mentioned in the release.
Build the largest database for trees
In order to create the world's largest tree database, researchers combined two global trees data.One is "Global ForeSt Biodiversity Initiative", and the other is a survey of Treechange, a unique initiative that measures the number of trees around the world.These surveys measured more than 38 million trees in 90 countries and 100 areas.Lyan, a coordinator of the Global ForeSt Biodiversity Initiative, says, "Each data goes to the forest, measuring trees one by one, and collects the type, size, and other characteristics.Counting the types of trees around the world is like solving puzzles scattered around the world. "By combining these two trees surveys, data on 64,100 kinds of trees was obtained.However, scientists understand that not all trees on the earth have been found, like all kinds of plants, animals, bacteria, insects, and bacteria.Therefore, Lyan's research team calculated the diversity of tree species in various types of forests on each continent, using this wide range of new datasets.The appearance of a rare species that was found only once or twice in a field survey was analyzed.By analyzing and modeling these trends, it has been found that there are 73,300 kinds of trees on the earth.This is 14%higher than the number of species currently listed.Mo Zhou, an associate professor of the University of Padhu University of Forest Economics and Management, contributed to the data analysis of this paper, said, "It is a wonderful knowledge to accurately estimate the species of trees around the world."Is stated in."No matter what happens in the future, our children and their children know that there were about 70,000 trees on earth at the beginning of the 21st century."