The main characteristics of climate products and economy of the Yellow River flowing through nine provinces.

It originated in Kariqu at the northern foot of Bayankala Mountains on the Qinghai-Tibet Plateau, Qinghai Province, zigzagged through Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shanxi, Shaanxi, Henan and Shandong provinces, and finally flowed into Bohai Sea.

Qinghai belongs to the plateau continental climate, which has the characteristics of low temperature, large temperature difference between day and night, less and concentrated rainfall, long sunshine and strong solar radiation. The characteristic of crops in Qinghai is drought. Food crops mainly include spring wheat, highland barley, broad beans, peas and potatoes. Rapeseed is the main cash crop.

The alpine climate zone in the alpine plateau of northwest Sichuan. The altitude difference in this area is great, and the three-dimensional climate change is obvious. Subtropical zone, warm temperate zone, middle temperate zone, cold temperate zone, sub-cold zone and permafrost zone appear in turn from the valley to the ridge. Generally speaking, the climate is dominated by cold temperate zone, with dry and warm valleys, wet and cold mountains, cool Leng Xia in winter and insufficient water and heat. The annual average temperature is 4 ~ 12℃, the annual precipitation is 500 ~ 900 mm, the weather is clear and the annual sunshine 1600 ~ 2600 hours. The cash crops are rape, peanuts, vegetables, fruits, tea, medicinal materials, flowers, sericulture, cotton, sugarcane, tobacco leaves, hemp, etc., which are rich in resources and various.

Gansu is located in the deep inland of northwest China, where warm and humid air currents are difficult to reach and there are few opportunities for rainfall. The climate in most areas is dry and belongs to temperate monsoon climate, which is continental. Winter is cold and long, the boundary between spring and summer is unclear, summer is short, the temperature is high, and the temperature drops quickly in autumn. The annual average temperature in the whole province is between 0 ~ 16℃, with different altitudes, large temperature difference, abundant sunshine and large daily temperature difference. In 20 12 years, the total grain output in Gansu was110.97 million tons, an increase of 9.4% over the previous year. Among them, the output of summer grain was 3.238 million tons, increasing by1.3%; The output of autumn grain was 7.859 million tons, up by 13 1%.

Ningxia Hui Autonomous Region is located in the hinterland of northwest inland plateau, which belongs to a typical continental semi-humid and semi-arid climate. The rainy season is mostly concentrated in June-September, with the characteristics of long winter cold, short summer heat, scarce rain and snow, dry climate, heavy sandstorm, cold in the south and warm in the north. The total agricultural output value of Ningxia in 20 13 was 43 billion yuan, an increase of 4.7% over the previous year. Among them, the output value of planting industry was 26.90 billion yuan, an increase of 4.3%; The output value of forestry was 984 million yuan, up by 0.7%; The output value of animal husbandry was 1, 204,380 billion yuan, an increase of 3.8%; The fishery output value was 65.438+32.2 billion yuan, an increase of 654.38+07.5%; The output value of agriculture, forestry, animal husbandry and fishery services was 654.38+79.3 million yuan, an increase of 9.6%.

Inner Mongolia Autonomous Region has a vast territory, high latitude, large plateau area, far from the ocean and mountainous edges. The climate is dominated by temperate continental monsoon climate. It has the characteristics of less and uneven precipitation, strong wind force and drastic changes in cold and summer. In 20 14, the total sown area of crops in Inner Mongolia was 7.356 million hectares. Among them, the sown area of grain crops is 5,656,438+0,000 hectares. The total grain output reached 27.53 million tons; The output of oilseeds is 6.5438+0.703 million tons, sugar beets are 6.5438+0.602 million tons, vegetables are 6.5438+0.4727 million tons, and fruits (including melons and fruits) are 3.223 million tons. The number of livestock in the whole region reached 1.29 1.58 million, and the total number of livestock increased by 73.499 million. The annual meat output was 2.523 million tons. Among them, the output of pork reached 733,000 tons; Beef production reached 545,000 tons; The output of mutton reached 933,000 tons. The milk output is 7.88 million tons; The output of poultry eggs is 535,000 tons.

Shanxi is located inland on the east coast of the mid-latitude mainland. Although the eastern part of the province is only 300~500 kilometers away from the coast, the climate in the eastern part of the province is weakly influenced by the ocean, and it belongs to the temperate continental monsoon climate in terms of climate types. The north is colder because of the attack of cold air mass in Inner Mongolia in winter. In summer, the southern part of the country is relatively mild because of the moist air masses coming from the Huang-Huai-Hai Plain and the North Plain of Henan Province. The climate difference between north and south is obvious. The climate is characterized by: long winter, cold and dry; In summer, the south is long and the north is short, and the rain is concentrated; In spring, the climate is changeable and there are more sandstorms. Autumn is short and the weather is mild. The whole region is sunny and rich in heat resources; There are more disastrous weather, "nine droughts in ten years"; The temperature difference between day and night is large.

The climate in Shanxi is very different, from north to south, and gradually transits to temperate zone, warm temperate zone and north subtropical zone. The annual average precipitation is 576.9 mm, the annual average temperature is 13.0℃, and the frost-free period is about 2 18 days. The complex and diverse climate features and landforms have bred thousands of species and wonders of the world. It can be called a natural museum and known as "Little China".

Henan has a warm temperate-subtropical, humid-semi-humid monsoon climate. Generally speaking, there is less rain and snow in winter, more wind and sand in spring, plenty of hot water in summer and sunny autumn. The average annual temperature in the whole province is generally between 12℃- 16℃, 1 month between -3℃-3℃, and July between 24℃-29℃, which is generally high in the east and low in the west, high in the south and low in the north, with obvious differences between mountainous areas and plains. The diurnal range of annual range is large, and the extreme minimum temperature is-2 1 .7℃ (1951year1month 12, Anyang). The extreme maximum temperature is 44.2℃ (1June 20th, 966, Luoyang). The frost-free period of the whole year is 180-240 days from north to south. The average annual precipitation is about 500-900 mm, with more mountains in the south and west, and the Dabie Mountains can reach more than 1 100 mm. 50% of the annual precipitation is concentrated in summer, and there are often heavy rains.

Shandong's climate belongs to warm temperate monsoon climate type. Precipitation is concentrated, rain and heat are in the same season, spring and autumn are short, winter and summer are long. The annual average temperature is 1 1℃- 14℃, and the regional difference of temperature in Shandong province is greater than that in the north and south. The grain output in Shandong Province is relatively high, and grain crops are planted in summer and autumn. Summer grain is mainly winter wheat, and autumn grain is mainly corn, sweet potato, soybean, rice, millet, sorghum and miscellaneous grains. Among them, wheat, corn and sweet potato are the three major food crops in Shandong. [7]