Characteristics of Linhe River.

Best answer: The whole area of Linhe River is the alluvial plain of the Yellow River, with an open and flat ground, a slight slope from southwest to northeast, and an altitude of 1209-1045 meters. The cultivated land along the river covers an area of 75,761 hectares, accounting for 54.4% of the total area, and the rest are pastures, sand dunes, forests and lakes. Linhe is rich in groundwater resources, with an average depth of 1.6 meters to 2.2 meters. Groundwater is mostly fresh water, which is suitable for irrigation.

1. topographic features

The whole area of Linhe River is the alluvial plain of the Yellow River, with an open and flat ground and a slight slope from southwest to northeast, with an altitude of 1209-1045 meters. The cultivated land along the river covers an area of 75,761 hectares, accounting for 54.4% of the total area, and the rest are pastures, sand dunes, forests and lakes. Linhe is rich in groundwater resources, with an average depth of 1.6 meters to 2.2 meters. Groundwater is mostly fresh water, which is suitable for irrigation. Groundwater recharge is mainly for Yellow River irrigation, with an annual water diversion volume of 1.2 billion cubic meters and an irrigation area of 1.595 million mu.

2. Climate characteristics

Deep inland near the river, it belongs to the semi-arid continental climate in the middle temperate zone, which is characterized by less clouds, less precipitation, strong wind and dry climate. The annual precipitation is 138.8 mm, the average temperature is 6.8 degrees Celsius, the temperature difference between day and night is large, and the sunshine time is long. The annual sunshine time is 3229.9 hours, making it one of the regions with the most sunshine hours in China. Light, heat and water are in the same period, and the frost-free period is about 130 days, which is suitable for the growth of crops and pastures.

3. Characteristics of natural resources

In the history of Linhe River, wheat and millet are the main crops of grain and beans, followed by barley, corn, sorghum, yellow black beans, millet, broad beans and millet. Intermittently planted rice, there are cowpeas, red beans, mung beans, peas, Qiao Mai and other miscellaneous grains and potatoes.

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