What exactly caused the number of bird species in the world to decline sharply?

Recently, the International Department of China's Biological Diversity Protection and Green Development Foundation (referred to as the China Green Fair and Green Club) learned from the internationally renowned journal that the number of global bird species has declined sharply, such as free fall, and the number of endangered species has continued to increase. As an observer institution of the United Nations Biological Diversity Convention (CBD), a member unit of the World Nature Protection Alliance (IUCN) and an observer agency of the International Trade Convention (CITES) of Endangered Wild and Plant species (CITES), continued to pay attention to biodiversity and biodiversity and. Species dynamics. In order to promote the mainstreamization of biological diversity, the Ministry of Green Association International has compiled this article as follows as a reference for interesting readers.

(Picture source: shutterstock)

Is the order of birds disappearing? Yes, based on this new study. She said nearly 48% of the number of bird species is declining. And other groups decreased stable at 39%. Only 6% of the population has gone through growth. 7% population data is unknown.

(Source: Science & VIE, picture description: statistical data of different factors on the influence of bird population)

The author uses data from the World Nature Protection Alliance (IUCN), which lists about 11,000 kinds of birds and formulates the "Red List" of endangered and threatened species.

Soil artificialization and climate change

Agriculture and soil artificialization is the main threat of the current diversity of bird species. Climate change ranks third. In fact, in the past few decades, ecosystems around the world have changed. Although the area of ​​forests around the world has increased in the past ten years, this dynamic is "misleading." It is maintained by planting plants that are not part of the natural ecosystem. Reading afforestation appears more specifically in the north, the land there is abandoned, but the use of forest land in tropical regions and decreased area will be larger. Tropical regions are also the most diverse areas in the world.

(Figure source: Science & VIE, picture description: (a) the richness of all species; (b) the richness of the species of endangered, endangered and key species specified by the World Nature Protection Alliance (IUCN).

Since the emergence of agriculture, land use has led to the extinction of bird species. Since the 19th century, the increase in human activities has led to a larger area of ​​habitat loss. More than 1,200 species are currently threatened by ecosystem conversion.

But as shown in the computer graphics published in the "Annual Review of Environment and Resources", many other factors threatened birds around the world. The existence of infrastructure, hunting, and invasive species, diseases, pollution, and agricultural chemistry and pharmaceutical pollution are all factors that many species are facing extinction threats.

The importance of protecting bird's biodiversity

Birds appeared before humans appeared, and were considered to be the last large -scale dinosaurs that Bai Yanji survived after the last large -scale extinction. However, the recent crisis caused by human activities may end the extensive diversity of existing birds. Maintaining the diversity of these animals must be considered vital. The author believes: "Birds help the functions of many ecosystems, directly or indirectly benefit human beings."

Future action

Researchers pointed out: "Globally, the fate of birds depends on the rulers." They found that the number of birds in areas with protection policies is increasing. And decrease in political instability. The solution is not only to protect species and ecosystems, but also to restore degenerative habitats, so these strategic participation requires the participation of political actors.

Organize: daisy

Review: lucy

Edit: Pierre

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