Explain why the tropical rain forest in South America is divided according to the terrain and the knowledge learned.

Because the tropical rain forest in South America is located near the equator, it is controlled by the low pressure zone for a long time and in a large range. Coastal warm current increases temperature and humidity; Pocket-shaped terrain and trade winds allow water vapor to penetrate inland; The mountainous area in the west is uplifted, and there is precipitation in many terrain (3 points, 3 points can be answered).

analyse

The reasons for the widespread distribution of tropical rainforests in South America are mainly considered from the perspectives of heat, temperature, precipitation and topography. Heat: The equator runs through South America, and the mainland is an inverted triangle. Most continents have low latitudes, abundant sunshine and high temperatures in the tropics. Precipitation: Adjacent to the two oceans, the Amazon River basin is abundant in precipitation and water conditions. Topographic conditions: Because of the Amazon River, the terrain is open, the soil is highly weathered, the fertility is strong, the population is sparse, there are many kinds of plants, the ecosystem is complex and the decomposition ability is strong. At the same time, the mountains in the west play the role of lifting the trade winds and reducing the topographic precipitation. To sum up, the tropical rain forests in the Amazon region are widely distributed.

Effective measures to protect the rainforest are mainly considered from the perspective of limiting unreasonable economic activities of human beings. Describes the causes of rainforest destruction. In view of the phenomenon of deforestation, it is necessary to formulate measures and plans combining logging with farming. In view of the phenomenon of excessive farming, mining and grazing, it is necessary to limit farming and grazing activities and reduce the damage to the rainforest. At the same time, nature reserves should be established, legislation and publicity should be strengthened to protect forest resources.