Climate difference between Pearl River Delta and Yangtze River Delta

Formerly known as Yuejiang Plain. Located in the eastern coast of Guangdong Province, China, it is a delta complex with a radial estuary, which is the general name of the large delta formed by the simultaneous alluvial of Xijiang River and Beijiang River and the small delta formed by the alluvial of Dongjiang River. It is an inverted triangle, with the bottom line starting from Sanshui City in the west, Guangzhou City in the east, and Shilong, with the apex at Yamenwan. The area is about 1. 1 10,000 square kilometers. Alluvium is thin, generally 20 ~ 30 meters. The ground fluctuates greatly, surrounded by hills, mountains and islands, accounting for 30% of the area. The central part is plain, distributed in southern Guangzhou, northern Zhongshan, eastern Jiangmen and western Humen. The annual sediment transport capacity of the Pearl River system is more than 80 million tons, and the delta near the estuary is still extending to the South China Sea. In the estuary area, it can stretch 10 ~ 120 meters every year, which is one of the key reclamation areas in China.

The delta has a subtropical climate, which is warm and humid all year round. The annual average temperature is 2 1 ~ 23℃, the coldest 1 monthly average temperature 13 ~ 15℃, and the hottest July average temperature is above 28℃. There are frequent typhoons from June to 10, with concentrated rainfall and the hottest weather. The annual average precipitation exceeds1500mm. The rainy season is synchronized with the high temperature season, with fertile soil and rivers, which is beneficial to agriculture. The yield per unit area of rice is among the best in China. Tropical and subtropical fruits include litchi, citrus, banana, pineapple, longan, carambola, mango, grapefruit and lemon. Three-dimensional agricultural structures such as mulberry-based fish ponds, fruit-based fish ponds and sugarcane-based fish ponds have been developed, which has become a model of ecological agriculture in China. There are sugar, silk, food, paper, machinery, chemicals, building materials, shipbuilding and other industries, known as the pearl of the South China Sea.