Why is Nostoc flagelliforme banned from sale?

Nostoc flagelliforme, also known as Di Mao, Chandragupta, etc., is an algae of the order Cyanophyta, named because of its black color and slender human hair. since the Han Dynasty, dignitaries often offer Nostoc as a tribute to the emperor. it has the functions of detoxifying and clearing heat, regulating lung and phlegm, conditioning intestines and stomach, especially has the unique effect of lowering blood pressure. let's take a look at why it is forbidden to sell it.

Why is Nostoc flagelliforme banned from sale?

The producing area of Nostoc flagelliforme is usually quite poor, and some farmers earn a living by digging it for money, but due to the excessive mining of Nostoc flagelliforme for many years, its wild resources have been seriously damaged, leading to the degradation of large areas of grassland and land desertification. In 2000, the State Council of the people's Republic of China issued the Circular of the State Council on prohibiting the collection and sale of Nostoc flagelliforme and stopping the excessive excavation of licorice and ephedra. The protection level of Nostoc flagelliforme in the list of China's key protected Wild plants was adjusted from second to first level, and the collection, acquisition, processing, sale and export of Nostoc flagelliforme were strictly prohibited.

What are the effects of collecting Nostoc flagelliforme?

The damage of Nostoc flagelliforme is great. According to the investigation and calculation, it is necessary to produce 1.5-2.5 pairs of Nostoc flagelliforme, and the income of 1.5-2.5 pairs of Nostoc flagelliforme is 40-50 yuan, that is, the income of 40-50 yuan destroys 10 mu of grassland, resulting in no benefit of the grassland for 10 years. Coupled with the economic losses caused by the influx of people into the prairie, food, housing and burning, the annual environmental and economic loss caused by hugging Nostoc flagelliforme is nearly 10 billion yuan, while the income of Nostoc flagelliforme is only tens of millions of yuan. The cost is too high to outweigh the gain. And because Nostoc flagelliforme is mainly distributed in the grasslands of northern China, collecting Nostoc flagelliforme has become one of the main causes of sandstorms in China.

Where is the origin of Nostoc flagelliforme?

Nostoc flagelliforme is a wild terrestrial algal organism endemic to the plateau, which is widely distributed in deserts and barren soils all over the world. It is widely distributed in arid and semi-arid areas of Inner Mongolia Autonomous region, Ningxia Hui Autonomous region and Gansu, Qinghai and Shaanxi provinces. The areas with annual rainfall between 80,250mm and Tertiary laterite grow more. In addition, there are also Russia, the people's Republic of Mongolia, Czechoslovakia, France, the United States, Mexico, Morocco, Somalia and Algeria.