Geographical environment of Taocheng District

Taocheng District belongs to continental monsoon climate zone, which is warm and semi-arid. The climate is characterized by four distinct seasons, with great differences in cold, warm, dry and wet. In summer, affected by the southerly airflow at the edge of the Pacific subtropical high, the tidal temperature is sultry and the precipitation is concentrated. Affected by the northwest monsoon in winter, the climate is dry and cold, with little rain and snow. Spring is dry and windy, and the temperature rises rapidly. Autumn is crisp, sunny and sometimes rainy.

The annual average sunshine hours in Taocheng District are 2642.8 hours. The annual evaporation 1295.7-262 1.4 mm, the annual average precipitation is 496.4 mm, and the southerly wind predominates throughout the year, with an average wind speed of 3.0m/s and an annual average temperature of 12.7℃. The annual average ground temperature is 15. 1℃, and the interannual variation is generally between 13.7℃- 16.7℃. The average annual snowfall days are 8. 1 day. Taocheng District is relatively flat, slightly inclined from southwest to northeast. The altitude is about 22.4-26.4m, the elevation difference is about 4m, and the ground slope is generally 1/8000-1/0000. The topography is influenced by the frequent diversion of ancient rivers, flooding and scouring and silting in history.

There are shallow closed depressions in Taocheng District. The deepest point of these shallow depressions is about 3 meters below the general ground (thousands of depressions), and some are only about 1 meter below the ground (Hujiawa and Hutangwa). There are many highlands, the lowest is about 1 m above the ground, and the highest is 3 to 4 meters above the ground. The area ranges from a few acres, a dozen acres to dozens of acres. Daogou and natural drainage ditches are all over the country.