At 30 degrees north latitude, this is a virtual line drawn by geographers, but no line of latitude and longitude has such magical powers.
Here is the highest Mount Everest on earth and the deepest Mariana Trench in the Western Pacific; the Yangtze, Mississippi, Nile, and Euphrates all flow into the sea from here.
There are ancient Egyptian pyramids, the Sphinx, the "Vulcan Tinder" murals in the Sahara Desert in North Africa, the Bermuda Triangle in the Caribbean Sea, and the Hanging Gardens of Babylon.
This is the world's golden wine-making belt. Kweichow Moutai, Sichuan Wuliangye, Jiannanchun, and Hunan Jiugui Liquor are all produced here.
At the same time, this is also the golden latitude belt of world tea production. In China alone, more than 60 kinds of tea are produced here. Among the top ten traditional teas in China, except for Anxi Tieguanyin, the other nine famous tea producing areas are all located in Up and down this latitude.
On this golden tea belt, roughly two high-quality tea producing areas can be outlined: one is the Jiangnan tea area centered on Huangshan at the junction of the three provinces of Anhui, Zhejiang, and Jiangxi; Qian 4 provinces, an area of about 100,000 square kilometers southwest tea area.
The common characteristics of these two large-producing regions are superior regional ecological environment, excellent overall tea quality, and a long history of tea production.
At 30 degrees north latitude, why are famous teas frequently produced?
Excellent geographical environment
As the saying goes: good tea comes out of high mountains and clouds, and the unique topography along 30 degrees north latitude creates an excellent geographical environment for the growth of high-quality tea.
At 30 degrees north latitude, from west to east in my country, it passes through Tibet, Sichuan, Chongqing, Guizhou, Hubei, Hunan, Henan, Jiangxi, Anhui, Zhejiang, and Jiangsu in turn. It has a complete natural ecosystem, fertile soil, and good ecology. The environment and high forest coverage have laid a solid foundation for the abundance of high-quality tea.
At the same time, due to the drift and squeezing of the section, there is not only the world’s highest peak-Mount Everest, but also many famous mountains such as Mengding Mountain in Sichuan, Huangshan Mountain in Anhui, Wuyi Mountain in Fujian, among them, Wuyi Mountain in Fujian is a national nature reserve, world culture and The natural double heritage site is known as the "key to open the gene pool of species".
Suitable climate
Under normal circumstances, the lower the latitude, the higher the temperature. Most of the tea under this condition contains a higher proportion of polyphenols and amino acids, so the taste is strong and bitter. On the contrary, if the latitude is too high and the temperature is too low, the content of the tea will be reduced and the taste will be weak.
And 30 degrees north latitude is in the transition zone between subtropical and temperate zone. Here, the four seasons are distinct, the climate is mild, and the rainfall is abundant. Therefore, the vegetation is lush, which is especially suitable for the growth of tea trees. At the same time, the effective photosynthesis of the tea trees grown here is enhanced, the leaves are more tender, and the contents are more abundant.
In addition, due to the higher humidity and temperature in the 30 degrees north latitude area, the reproduction speed of microorganisms will be faster, which can accelerate the decomposition of organic matter in the soil and continue to release acidic substances. Acidic soil (red soil) is more suitable for the growth of tea trees.