What is the key to harnessing the Yellow River?

To harness the Yellow River, it is important to protect and harness it.

I. Introduction to the Yellow River

The Yellow River, located in the northern part of China, is one of the longest rivers in the world and the second longest river in China. The yellow of the Yellow River is actually sediment. Ancient books contain: "The Yellow River fights water, and mud ranks seventh."

9% of the sediment in the Yellow River comes from the Loess Plateau, where the soil is loose and easy to corrode and disperse. Whenever it is washed by heavy rain, it loses a lot of water and soil and runs into the Yellow River. The river basin is long in winter and short in summer, the temperature difference between winter and summer is wide, and the seasonal temperature changes clearly. The precipitation in the basin is small, mainly in dry land agriculture, with dry winter and dry spring, and the precipitation is concentrated in July and August in summer and autumn.

second, the geological influence of the yellow river

the gestation, birth and development of the yellow river are controlled by geological processes in the geological history period, with tectonic movements caused by crustal changes as external forces and erosion, transportation and accumulation generated by itself under hydrogeological conditions as internal forces. In the historical process of becoming a river, it keeps moving and keeps pace with the times.

Soil erosion in the Loess Plateau and sediment accumulation in the lower reaches of the Yellow River have been going on since prehistoric geological times, and have been increasingly influenced by human activities since then. According to various studies, the ancient Yellow River has three stages of development: the early Pleistocene from Tertiary to Quaternary is the incubation period of the ancient Yellow River.

iii. Runoff of the Yellow River

The Yellow River belongs to the Pacific water system. The main stream is mostly curved, known as the "Nine Curves Yellow River", and the actual flow of the river is 2.64 times of the straight line distance from the source to the estuary. There are many tributaries of the Yellow River, from Maquguo in Heyuan to the estuary, which directly flows into the Yellow River along the way. There are 22 tributaries with a basin area of more than 1 square kilometers, which constitute the Yellow River water system.

There are 76 tributaries with an area of more than 1, square kilometers, with a drainage area of 58, square kilometers, accounting for 77% of the total river catchment area; There are 11 tributaries over 1, square kilometers, with a drainage area of 37, square kilometers, accounting for 5% of the total river catchment area. Larger tributaries are the main body of the Yellow River basin area.

IV. Geomorphological features of the Yellow River

The Yellow River basin is bounded by bayan har in the west, Yinshan Mountain in the north, Qinling Mountain in the south and Bohai Sea in the east. The inland potential in the basin is high in the west and low in the east, and the height difference is very wide, forming three steps from west to east and from high to low.