Characteristics of natural environment in Heilongjiang Province

The natural environment features of Heilongjiang are as follows:

First, the terrain

1. Heilongjiang begins at the intersection of Shileka River and Ergon River, 2824 kilometers (1755 miles) away from the estuary. The Shileka River rises at the intersection of Ingoda River in Siberia and Enen River in Mongolia, and is more than 547 kilometers (340 miles) inland. Ergon River originates from Inner Mongolia Autonomous Region of China, and is about 1609 km (1000 miles) from its confluence with Xileka River.

2. The drainage area of this river system is about 1855000 square kilometers (7 16200 square miles), including many rivers and lakes. The main tributaries are Jieya River, Breya River and amur river River in Siberia, Mugong River and Songhua River in China, and Wusuli River, the border river between eastern China and Siberia. It is customary to divide Heilongjiang into three sections: upper, middle and lower reaches.

Second, climate.

The basin has a monsoon climate-winds from the mainland and the ocean change with the seasons. In winter, dry cold air from Siberia brings sunny and dry weather with strong frost. In summer, warm and humid sea breeze brings heavy rain, thus raising the water level of the basin and its main tributaries. The scenery of Heilongjiang wetland in autumn is warm and dry.

Three. hydrology

Rivers are mainly replenished by monsoon rainfall in summer and autumn. Rainwater quickly flowed into the river, forming a flood period of 65438+ 10 in May. Its average flow rate is about 65,438+00,900 cubic meters per second (385,000 cubic feet per second). In winter, near Khabarovsk, the flow rate dropped to 148 199 cubic meters per second (53007 100 cubic feet per second), and the highest flow rate recorded by 1897 exceeded 39200 cubic meters per second (1400000 cubic feet).

Fourth, plants

Many parts of the basin are in the Taijialin vegetation belt. Especially in peat areas, larch is the main tree species, and there are some pines, spruces and firs in arid areas. In Daxing 'anling and Xiaoxing 'anling in the south, you can see mixed forests of broad-leaved forest and broad-leaved coniferous forest, in which Mongolian oak, pine and larch are the main ones. Wetland scenery in Heilongjiang.

Verb (abbreviation for verb) animal

This basin is rich in fish. There are about 100 species of fish in the downstream, and about 60 species in the upstream, even surpassing European rivers such as Wawa River and Danube River. About 25 or 30 species have commercial value. A characteristic of Heilongjiang is that a large number of fish develop in the sea to avoid being hurt by the rapid change of river water level in summer.