Lushi River originates in Yongtai County and flows through Baisha, Lushi and Wutang in Putian to the estuary and into the sea. In the middle reaches of Lushi River, there is a stream called Taozi (called Taozi in Putian) about two miles below Waidu Reservoir. It is said that jellyfish were produced here in ancient times. Jellyfish are marine creatures that usually float in shallow water. Now they are all above the sea level, and the sea water can only be poured to the mouth of Luxi River for two miles at most. This is the result of the rise of the earth's crust.
The hills in Hohhot, Huangshi, Huating and other places are only small islands exposed to the sea in ancient times. Tianma Village in Huangshi was the first county magistrate in the Southern and Northern Dynasties (568), and Putian was an island in the sea, which was occupied by pirates and named after the thatched cottage. There is a "Tu Hai" near it, which is a relic of the ancient sea. At that time, the coastline of Putian was at the foot of Aobingling Mountain in Baisha Town. The so-called "Aobingling" was the place where ships docked. At the end of the Qing Dynasty and the beginning of the Republic of China, ingots and ropes were often found in Aobingling and Shiding. According to the records of the old county annals, during the period of Liang and Chen, at the high tide, it reached Sihuapi in front of Guanghua Temple in Nanshan and outside the west gate. Daguiyu in Huangshi is a small island exposed to the sea. Therefore, now there is salt water spewing out from the depression in front of Guanghua Temple. In my hometown, the well water of Xuxia in the Han River is salty, and the stone fell to the seaside. Many farmland is saline-alkali land, and almost all wells in Yu Xia are salty. I have been to Tingqi Village in Daitou, and the sweet potatoes and dried sweet potatoes I ate were salty, even the soup was salty.
Up to now, many rural place names in Putian are water names, such as Xiaotang, Hengtang, Nangou, Shazhou and Laixi. And there are many place names near the water. Because the naming of place names reflects the local historical, cultural and geographical characteristics at that time. The reason why the rural place names in Putian have water names or watersides is because the working people had special feelings for water when they were named at that time, because the place names were connected with water. From the place names, we can see the characteristics of the geographical environment at that time.
As for the islands along the coast of Putian, there are more than 0/00 large and small islands, such as Rinan Island, Meizhou Island, Beidao Island and Cucumber Island, all of which are mainland islands. In ancient times, the islands were all connected with Putian land, so the coastal areas of Putian were mostly rocky shores, and the coastline was tortuous, which was affected by the long-term ups and downs of the earth's crust, causing seawater immersion, so that part of the land was surrounded by seawater and became islands, hanging in the sea until now. The coastline along the coast is still changing.
The formation of Putian Plain is influenced by crustal movement, and Putian Plain rises slowly and intermittently. Mulanxi, Tongluxi, Yanshouxi and other rivers are constantly silting up, which gradually expands the area of Putian Plain to the ocean. However, due to the rotation of the earth, the strata will fold (squeeze) or crack (open), which is the uplift movement, that is, orogeny. The higher the mountain, the deeper the trench, some rocks will be squeezed, twisted and broken, and earthquakes will occur.
Putian folklore says: "sink seven continents, float Putian." There is scientific basis. If there is a sink, there will be a float, and if there is a rise, there will be a fall. There are seven continents and oceans in the south of Putian. When the land sinks into the ocean, the Putian Plain will emerge from the ocean. Like a distributary river, it will be washed away while accumulating.
Since modern times, Xinghua Bay (especially the inner harbor channel of Sanjiangkou) has become shallower year by year, and the sediment in Doumentou and Xinqiao has become shallower. Chigang Farm was reclaimed after liberation, which is about five feet higher than the field in Caidong Village on the old seawall. This is caused by the muddy water deposited here by years of agitation in Xinghua Bay. The tide of the old seawall can't get in, and it remains the same. When the old seawall was built, it was a beach, lower than the inside, and now it is higher than the inside. The beach in front of Pinghai is facing the sea, and tidal waves play a great role. The south wind in spring and summer makes the sea sand 4-5 meters higher than the coast, and the sea sand in autumn and winter is 4-5 meters lower than the coast. The outer storefronts in front of Pinghai were basically washed away by the tide (only the store in Ilkan was not washed away). When I went to Pinghai three years ago, I couldn't even see the storefront inside, and both sides of the whole street were washed away by the tide. Step back thirty or forty meters. I have seen these with my own eyes since I went to work in Pinghai from 65438 to 0954.
There is also Qiaotou Village on the west side of Pinghai, which is also torn off by the tide every year. Even Qiaotou Palace is torn off by the tide and turned into the sea. "The more embedded, the less safe it is."
As the Chigang piled higher and higher, the sea receded, the embedded head was pulled deeper and deeper, and the mainland retreated.