Interpretation of world geographical terms

★ Anglo-Saxon America—

North America, in economic and political geography, refers to America north of the southern border of the United States, which is also commonly known as Anglo-Saxon America. The United States and Canada occupy most of North America, and these two countries are greatly influenced by British colonization (Anglo-Saxon). The main language is English, which is significantly different from Latin America, which is mainly influenced by western and Portuguese cultures.

★ Chinnock wind—

At the turn of spring and summer, in the great plain area north of 40 north latitude and east of the Rocky Mountains, the westerly wind crosses the Rocky Mountains and sinks, and the burning wind formed at the eastern foot of the Rocky Mountains is called Chinnock wind. (Burning wind is called Blah wind in Europe)

★ Sunshine Zone-

The "sunshine zone" in the United States is a concept that appeared in the 1970s. Generally speaking, it refers to the area south of 37 north latitude. The general scope is: California on the Pacific coast in the west, North Carolina on the Atlantic coast in the east, the middle reaches of the Mississippi River in the north and the Gulf of Mexico in the south. The sunshine zone means that the south is "a zone with abundant sunshine and mild climate, which is suitable for human habitation", and it also means that all walks of life in this zone are thriving and the economy is booming. This area, once famous for poverty, racial discrimination and population outflow, attracted a large number of people to move in because of its low housing prices. With the migration of population and rich local energy and agricultural resources, the layout of emerging industries in the southern United States has been attracted, thus forming the Southern Industrial Zone, one of the three major industrial zones in the United States. We call it America's "sunshine zone".

★ Pleria community—

It is a plant community in the temperate steppe of North America. Mainly distributed in the eastern Rocky Mountains and the western Mississippi River. The grass cover is composed of Gramineae plants, and its height is 1.5 meters. The soil is fertile, rich in humus and full of flowers in spring. Suitable for developing animal husbandry.

★ Hillea community—

The tropical evergreen rainforest in South America is often called Hillea community. The composition of plant species is extremely rich and mixed with each other, and few pure forests are formed, many of which are endemic to South America. The height of the tree can reach 80- 100 m, and some tree species have slab roots at the bottom of the trunk.

★ Shabala community—

In the subtropical summer dry climate, plants generally have the ecological characteristics of evergreen, hard and smooth leaves, mostly deciduous shrubs higher than 2 meters. These plants are typically distributed in the Pacific coast of South America at 40-30 N, extending from British Columbia to Baja California, and are called zabala Community (called Markey Community in Europe), and the supporting soil is brown soil.

★ Camp Community—

Under the influence of tropical dry and wet seasons, the savanna distributed on the Brazilian plateau between the Amazon River and parana river in Brazil is called Kemp Community. Because of good drainage, it is prone to drought. Gramineae and dicotyledonous herbs are dominant in Leguminosae and Compositae.

★ Riano community—

Under the influence of tropical dry and wet seasons, savanna distributed in Orinoco River Plain is called Riano Community, and its appearance and species composition are different from Kemp Community. Because of the low terrain, the rainy season is often hit by floods, the soil moisture is sufficient, and the grass cover grows very luxuriantly, mostly tall grass over 2m, mainly Gramineae, Cyperaceae and Compositae.

★ pampas Grassland Community—

It occupies the east coast of the mainland south of 30 S, including the southern edge of the Brazilian Plateau, the southern region between Uruguay and Argentina, and the eastern part of the Pambas grassland. The subtropical humid climate with low annual temperature and relatively uniform seasonal distribution of precipitation should be suitable for forest development, but in fact, except for the corridor forest on the river bank, it is basically a forestless grassland, commonly known as Pampas community. Among Gramineae, Gramineae is dominant, and there are various dicotyledons, especially Compositae. Lack of leguminous plants is a major feature of this community. In addition, due to the short history of vegetation development, endemic species are relatively poor.

★ Ridges and valleys, waterfalls and cities

In the southwest of Appalachian Mountains, several geomorphic units such as foothill platform, blue ridge, ridge valley and Appalachian plateau are automatically arranged westward. The piedmont and Blue Ridge are ancient lithology, which are connected with steep cliffs along the coast. The river drops sharply here, forming a famous waterfall route, in which many cities are distributed. Blue ridge is a rugged mountain. The sedimentary rocks of Upper Paleozoic in Linggu area are mainly composed of a series of parallel folds and thrust faults, and the topography is characterized by alternating ridges and valleys and criss-crossing water systems. Appalachian Plateau, including Allegheny Plateau and Cumberland Plateau, is relatively flat.

★ Tonato wind

Due to the rapid warming of the great plains in spring, a high temperature and low pressure center is formed, which leads to land tornadoes. East of the American Rocky Mountains and south of the Great Lakes occur in spring and summer, with the most in spring.

★ Latin America

Refers to the American region south of the United States, located between 32 42' north latitude and 56 54' south latitude, including Mexico, Central America, West Indies and South America. For a long time, Spain and Portugal are both colonies of Latin Group, and most of the languages spoken in the existing countries belong to Latin Group, so they are called Latin America.

★ Sambo people

Black and Indian hybrids are called Sambo people.

★ Isthmus of China and America

That is, Central America is located in the narrow strip of Central America south of Mexico and north of Colombia, bordering the Caribbean Sea in the Atlantic Ocean in the east and the Pacific Ocean in the west. Including seven countries: Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica, Panama and Belize.