Induction of three knowledge points in geography elective course of senior two 1
1. Natural boundary
(1) Natural boundaries in the eastern monsoon region
(1) The dividing line between the southern district and the northern district (warm temperate humid area of North China and humid area of Central China): Qinling-Huaihe River (1October 1℃ isotherm, daily average temperature ≥ 10℃, accumulated temperature ≥ 4500℃ isoline).
② The boundary between the humid and semi-humid areas in the temperate zone of Northeast China and the humid and semi-humid areas in the warm temperate zone of North China: the isoline with daily average temperature ≥ 10℃ and accumulated temperature ≥ 3,200℃.
③ The dividing line between the humid area in Central China and the tropical humid area in South China: the isoline with daily average temperature ≥ 10℃ and accumulated temperature ≥ 7,500℃.
(2) The boundary of natural areas in arid and semi-arid areas in northwest China.
The dividing line between Inner Mongolia temperate grassland area and northwest temperate and warm temperate desert area: Helan Mountain Line, which is equivalent to 200 mm isoprecipitation line.
2. Administrative boundaries
(1) The boundary between southern Xinjiang and northern Xinjiang (the boundary between mobile sand dunes and fixed and semi-fixed sand dunes): Tianshan Mountain.
(2) The dividing line between Hubei Province and Chongqing: Wushan.
(3) The dividing line between Fujian Province and Jiangxi Province: Wuyi Mountain.
(4) The dividing line between Guangdong Province and Hunan Province: Nanling.
(5) The boundary between Xizang Autonomous Region and Xinjiang Uygur Autonomous Region: Kunlun Mountain.
(6) The dividing line between Gansu Province and Qinghai Province: Qilian Mountain.
(7) The dividing line between Sichuan Province and Shaanxi Province: Daba Mountain.
3. The boundaries of three natural areas
(1) The dividing line between the eastern monsoon region and the northwest arid and semi-arid region: 400 mm isohyet.
(2) The boundary between the Qinghai-Tibet alpine region and the eastern monsoon region: 3000m contour.
(3) The dividing line between the northern Qinghai-Tibet alpine region and the arid and semi-arid region in the northwest: generally, it runs from Kunlun Mountain to the east via Altun Mountain and Qilian Mountain.
Three knowledge points of geography elective course in senior two.
⑴ Analyze the urban location factors of Wuhan in China:
Location: Located at the intersection of Yangtze River and Hanjiang River; Central Chinese mainland.
Natural factors:
① Subtropical monsoon climate, with abundant heat and precipitation, with both rain and heat;
② Located in the plain of the middle and lower reaches of the Yangtze River, with flat terrain;
③ The Yangtze River and Hanjiang River meet, which is convenient for the distribution and transit of people and logistics.
Socio-economic factors:
① nearby iron ore and cotton resources;
② At the intersection of Yangtze River and Hanjiang River, the Beijing-Guangzhou Railway passes through the territory, with convenient transportation;
③ Developed science and technology;
(4) Sufficient labor force and high quality;
⑤ The capital city of Hubei Province and the economic and cultural center of Central China;
⑥ Modern industries and emerging high-tech industries (Optical Valley).
(Main industrial sectors: steel, automobile, cotton textile, optical valley, etc. ).
(2) The areas where the first cities were born: some alluvial plains of big rivers in the world, such as the plains in the middle and lower reaches of the Yangtze River and the Yellow River;
Ganges, Indus, the middle and lower reaches of Nile, etc.
Cause analysis: fertile soil and convenient irrigation conditions make agriculture developed; Waterway transportation is convenient.
Three knowledge points of geography elective course in senior two 3
Important geographical boundaries of China:
(1) Qinling-Huaihe line is an important geographical dividing line in China, and the landform of this line is very different from that of north and south:
① the southern boundary of the Loess Plateau;
② It is roughly where the 0℃ isotherm of 65438+ 10 and the 800 mm precipitation line pass;
③ the dividing line between subtropical zone and warm temperate zone;
(4) the boundary between the humid area and the semi-humid area;
⑤ The boundary between subtropical evergreen broad-leaved forest and temperate deciduous broad-leaved forest;
⑥ Whether rivers have ice age boundaries;
⑦ the boundary between agricultural paddy field and dry land, three crops in two years and two crops in one year, rice and wheat miscellaneous grains;
The dividing line between the Yangtze River system and the Yellow River system.
(2) Daxinganling is also an important geographical dividing line of China, and its landforms on the east and west sides are also very different:
(1) 400 mm rainfall line.
(2) the dividing line between monsoon region and non-monsoon region;
(3) the dividing line between the inner flow area and the outer flow area;
(4) places where pastoral areas and agricultural areas pass;
⑤ The dividing line between Inner Mongolia Plateau and Northeast Plain;
⑥ The boundary between the second and third levels of Chinese topography;
⑦ The boundary between forest landscape and grassland landscape.
Three knowledge points of geography elective course in senior two are summarized in related articles;
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★ Three review outlines of geography elective course in senior two.
★ 3 Essentials of Geography Elective Course in Senior Two.
★ The first chapter teaching plan and knowledge points of geography elective three in senior two.
★ Three notes on geography elective courses in senior two.
★ Geography elective 3 knowledge points
★ Senior two geography elective three key knowledge of tourism geography
★ Review Outline of Tourism Geography as an Elective Course of Geography in Senior Two.
★ Summary of 6 knowledge points of geography elective course in senior high school