What is the environment like in Dandong?

The average annual temperature in Dandong is 6.8-8.7℃, and the temperature difference between north and south is about 2℃. Although winter is long, the severe cold period (the period when the daily average temperature is lower than-10℃) is short. Although it is hot in summer, the hot period (the average daily temperature is above 25℃) is short, generally about 20 days (from late July to mid-August). Spring and autumn are the seasons when the north and south winds alternate. In spring, cold air begins to weaken and retreat northward, while warm air enters northward; Autumn is the opposite. The above weather characteristics, Dandong city has four distinct seasons. Winter is the longest, followed by summer, and the transition season between spring and autumn is the shortest. There is a lot of precipitation in Dandong, which is the largest in Northeast China, accounting for 70% of the precipitation in Liaoning Province. There is plenty of water. The average annual precipitation is 88 1.3- 1087.5mm, and two thirds of the annual precipitation is concentrated in summer, and the rainstorm in this area is concentrated from mid-July to mid-August.

hydrology

There are many rivers in Dandong area, including Yalu River system, ocean system and coastal system. There are 944 rivers over 2 kilometers in the whole region, including 4 large rivers with a basin area of over 5,000 square kilometers, namely Yalu River, Hunjiang River, Zanhe River and Dayang River. The per capita water consumption is 65438+ 0.5 times of the national per capita water consumption.

zone

Dandong area is a part of the hills in Liaodong mountain area, which belongs to the branch or residual vein extending southwest of Changbai Mountain. The terrain gradually decreases from northeast to southwest. According to the height and topographic features, it can be divided into three types of large-scale geomorphic units: middle and low mountainous areas in the north, hilly areas in the south and coastal plain areas in the south. Among them, there are mainly mountains and hills, as well as some small geomorphic units such as terraces, basins and platforms. The city's forest coverage rate reached 66%.

Dandong, a coastal city along the Yangtze River with industry, commerce, logistics and tourism as the main body, is a state-level border economic cooperation zone and the largest and most beautiful border city in China. China is also the only city in Asia with border crossings, airports, high-speed rail, river ports, seaports and expressway. 20 10 On May 26th, Southern People Weekly counted the top ten livable towns in China, and Dandong was listed.