Geographical environment of Qiandeng town

In ancient times, influenced by the resurgence of Huangpu River, sediments were gradually deposited, and the soil parent material was lacustrine sediments, and some areas also had jianghai sediments. The ground tolerance was 9 ~13t /m2.

The whole territory is flat and slightly inclined from northeast to southwest, with an average elevation of 2.1~ 4m and an average elevation of 3.5m. Except for Shaoqingshan, there is an isolated hill, which is the Wusong benchmark (the same below)12.7m..

The average elevation of Xiaoshu, Shanpu and Wenpu villages in the northeast of the town is 3.8 meters, of which Gaotian (3.88 meters above 1954 flood line) has 2 192 mu, accounting for about 60% of Gaotian in the town; Low-lying land (below the warning water level of 3.2m) is 34 10 mu, all of which are concentrated in the areas of Taoqiao, xin jing, Nanjinxing, Xieluo, Diaoshi and Qian Qi Village in the southwest of the town, accounting for 8 1.6% of the low-lying land in the town.

The plane terrain is an irregular rectangle, about 5 kilometers wide from east to west and 1 1 km long from north to south. There are many rivers and ports in China, and Shuicheng covers an area of 12597. 17 mu, accounting for 19.68% of the total area of the town. It belongs to Taihu Lake Basin and Dianba River System. Qiandeng area belongs to the monsoon climate zone in the south of north subtropical zone, with moderate humidity, distinct seasons and abundant rainfall. It is characterized by short spring and autumn and long summer and winter.

In Qiandeng area, the spring rain usually turns to Grain Rain, usually from February 19 to April 20, and * * * is about 6 1 day. The later stage of this stage belongs to the final frost period, with an average temperature of 5 ~ 20℃ and increased sunshine.

The time from April 2 1 to August 23/in Grain Rain is about 126 days. This stage is a year-round high temperature period, with an average temperature of about 25℃ and a maximum temperature of 36 ~ 38℃. The sunshine is long, there are many typhoons and rainstorms, and thunderstorms occur from time to time.

The period from summer to the first frost is autumn, generally from August 24th to1October 23rd, 10, about 60 days. At this stage, the weather gradually turns cool, the sky is crisp, the average temperature is between 10 ~ 20℃, and it begins to frost, which is the autumn harvest season in rural areas.

From frost to rain is winter, which generally lasts from 10 June 24th to February 8th of the following year, which is about 1 19 days. At this stage, the temperature drops sharply, the air is dry, the sunshine is short, the average temperature is between 3 and 5℃, and the freezing days are basically concentrated in this period.