What are the topography characteristics of the Xijiang River Basin and explain the reasons for its j

The Xijiang River is the longest river in South China, the third largest river in China, and the longest river in the Pearl River system, second only to the Yangtze River and the Yellow River. The volume of shipping ranks second in China, second only to the Yangtze River. It originates in Yunnan, flows through Guangxi, and meets the Beijiang River in Sanshui, Foshan, Guangdong.

Its main stream is in Jiangmen and Zhongshan, and flows into the South China Sea. Together with the Dongjiang River and the Beijiang River, it is called the Pearl River. Xijiang is currently the main fresh water in Zhuhai and Macao**.

The main rivers in the Xijiang basin are Nanpan River, Hongshui River, Qianxun River, Yujiang River, Liujiang River, Guijiang River and Hejiang River, with a total area of 10,000 square kilometers in the Xijiang River Basin, of which the total catchment area in Guangxi is 10,000 square kilometers, accounting for the catchment area of the whole basin, and the total water resources account for about the total water resources of Guangxi.

Xijiang Bridge. Nanpan River. It is the main source of the Hongshui River and the source of the main stream of the Xijiang River system in the Pearl River Basin. The length of the river is 936 kilometers, and the area of the river basin in Guangxi is 4,162 square kilometers, with an average annual total water resources of 100 million cubic meters and a water production modulus of 10,000 cubic meters per square kilometer.

Red Water River. From the cane incense through Guangxi Leye, Tian'e, Nandan, Laibin and other counties, to Xiangzhou County Shilong Town and Liujiang confluence? The length of the river is 659 kilometers, the catchment area of the basin is 43,790 square kilometers, the average annual total water resources are 100 million cubic meters, and the water production modulus of the basin is 10,000 cubic meters per square kilometer.

Natural resources. Qianxun River. Qianhai and Jiang run from the mouth of the three rivers in Shilong Town, Xiangzhou County, through Wuxuan and Guiping to Wuzhou and join the Guijiang River, with a length of 172 kilometers and a catchment area of 21,680 square kilometers.

The water yield modulus is 10,000 cubic meters per square kilometer, and the average total water resources for many years are 100 million cubic meters.

Yu Jiang. The Yujiang River originates from Yangmei Mountain in Guangnan County, Yunnan Province, and is the largest tributary of the Xijiang River Basin. The catchment area of the basin is 90,800 square kilometers (including the area in Vietnam), of which 79,207 square kilometers are in China and 68,125 square kilometers are in Guangxi.

The total water resources in the Yujiang River basin are 37.1 billion cubic meters, and the water yield modulus is 10,000 cubic meters per square kilometer.

What are the topography characteristics of the Xijiang River Basin and explain the reasons for its judgment? Yunnan is currently fully resuming tourism, and hotel attraction tickets are much cheaper than last year, but attractions need to be booked in advance, and there will be a limit on the number of people per day.

This trip to Yunnan is the least expensive of all the tours, and if your Yunnan tour is expensive, that's what you won't play. We stayed in a star-rated hotel for 5 nights for 6 days, as well as a hot spring hotel and a sea-view room by Erhai Lake. Attraction tickets, local transportation, local guide fees, meals, insurance, and more are all included!

The two of us chose to buy one get one free, with an average of only 800 yuan per person for a six-day tour of Kunming-Dali-Lijiang! When we went, we were the senior tour guide in Dali, Pingping, who helped me make all the arrangements and had a very comfortable time. Moreover, Pingping's company is now engaged in big discount activities, and many routes can be free for two people to travel, which is not too cost-effective!

(1) The middle of the terrain is high and the surrounding is low.

Reason: The river flows from the middle part to the surrounding area, and it is scattered and du.

2) Borneo has abundant precipitation throughout the year, with a large amount of river water and a stable flow; There is no ice period, and it can be navigated all year round; But the rivers are short and the voyages are short; The upper reaches of the river have high mountains and deep valleys, and the navigation conditions are poor.

3) Local climatic conditions such as light, heat, precipitation, etc.; soil quality, land rent; demand in and around the local market; the quality and quantity of the workforce, the cost of wages; Preferential agricultural policies for the local government; Local transportation and other infrastructure. (4 points are sufficient).

1) The terrain is judged according to the direction of the river.

2) River navigation should be considered from the size of runoff, seasonal changes, ice periods, topography, etc.

3) Examine the location factors that affect agriculture, i.e., natural factors (climate, topography, soil, water source) and socio-economic factors (market, transportation, labor, policy).

The Zambezi River is located within the tropics. The upper and middle reaches are on the plateau, and the temperature varies according to the altitude, which is relatively mild, generally between 18 30 (64 86). Winter (May July) is cool and dry, with temperatures averaging 20 (68).

The rainy season begins from November to April. Rainfall is mostly thundershowers, sometimes up to 150 mm (6 inches) per hour, and the sky is clear and clear between downpours. Flooding around the Zambezi River.

Most of the upper Zambezi River is located on the Barold Plateau within Zambia; [1] The midstream passes through the Namibia-Botswana border and eventually forms the famous Victoria Falls at the junction of Zambia and Zimbabwe; Downstream through the Kariba Gorge, into Mozambique and eventually into the Indian Ocean. The Zambezi River is abundant in water and has an average annual flow second only to the Congo River in Africa.

The West River, the largest river in southern Africa and the fourth largest river in Africa, originates in the eastern plateau of Angola, with a total length of 2,660 kilometers and a basin area of 1.38 million square kilometers, flowing through Angola, Namibia, Botswana, Zimbabwe, Zambia, Mozambique and other countries along the way and flowing into the Indian Ocean. Downstream through the Kariba Gorge, into Mozambique and eventually into the Indian Ocean.

Once Vic and Sixth Middle School went to school and Duan Main Line with the reason for the lenses.

(1) Plateau basin topography.

Located in the Inner Mongolia Plateau; The water system is converging, showing that the terrain is high on all sides and low in the middle.

2) Intraterrestrial circulation.

Daihai Lake has no rivers flowing out, and it is an incurrent lake; The lake has less water through the recharge of circulating precipitation in the land, and the salt is brought into the lake through surface and underground runoff, and after long-term evaporation, the salt in the lake water is continuously retained and accumulated, forming a saltwater lake.

3) Global warming, the difference between evaporation and precipitation increases; The increase in population in the basin, the development of the three major industries, and the increase in water diversion have reduced the amount of water flowing into the Daihai Sea.

(1) According to the flow direction of the river in the figure, the river flows from the middle to the periphery, and the terrain is high in the middle and low in the four (2) Judging from the longitude and latitude in the figure, the region is located in Southeast Asia and belongs to the tropical rainforest climate, and the corresponding natural zone is the tropical rainforest belt;

The reason for the abundant geothermal resources around the mountain is that it is located at the junction of the plates and has frequent crustal activities (3) The reason for the swamps at C: it is located near the equator, the tropical rainforest climate zone (controlled by the equatorial low pressure zone all year round), and the rainfall is rainy and heavy throughout the year; Located in the coastal plain area, the terrain is low and flat, and the drainage is not smooth, and it is easy to accumulate water

Therefore, the answer is: (1) the middle is high, the surrounding is low, and the rivers flow from the middle to the periphery (2) the tropical rainforest zone is located at the junction of the plates, and the earth's crust is frequently active (3) it is located near the equator, and the tropical rainforest climate zone (controlled by the equatorial low pressure zone all year round) is rainy and has a large amount of precipitation throughout the year; Located in the coastal plain area, the terrain is low and flat, and the drainage is not smooth, and it is easy to accumulate water

The overall topography of the Nile River basin is high in the south and low in the north, and the reason for the judgment is that the Nile River flows from south to north.

(1) High in the northwest and low in the southeast (1 point); The river flows from northwest to southeast (1 point).

2) Winter temperatures are higher than those at the same latitude (1 point) because the tall Himalayas in the north block the cold winter winds (1 point).

3) The instability of the southwest monsoon is the main cause of flooding in the country (1 point); The terrain is low and flat, and the drainage is poor (1 point); Flare terrain that is susceptible to storm surge (1 point).

Test question analysis: 1) Reading the map, judging by the flow direction of the river, the river flows from the northwest to the southeast, so the topography of the peninsula is high in the northwest and low in the southeast.

2) According to the analysis of the shape of the mesothermal line in the figure, the mesothermal line in the figure is convex to the high latitude, indicating that the winter temperature is higher than that of the same latitude. This is mainly due to the fact that there are tall Himalayas in the north of the region that block the cold winter winds and are less affected by the winter winds.

3) The place has a tropical monsoon climate, which is affected by the southwest monsoon in summer. The instability of the southwest monsoon is the main cause of flooding in the country. From the perspective of topography, the terrain is low, the drainage is not smooth, and floods are prone to occur.

The country is located at the top of the bay, with a flare-shaped bay shape, which exacerbates the disaster effects of storm surges. Therefore, it is often hit by floods.

Judge and give reasons, according to what topic do you judge? How can you explain the reason without a title?

Judge and explain the reasons, and judge the right and wrong of the return. to be able to justify it.

(1) Basin or Congo (river) basin (1 point).

Judging from the distribution of centripetal water systems or rivers, the topographic area has three sides: north, east and south.

high (or high on all sides, low in the middle, or rivers flowing from all sides to the middle); Judging from the contour line (500 m), the topographic area is a basin (2 points).

2) the watershed is located in the equatorial region; It is controlled by the equatorial low pressure zone throughout the year, with prevailing updrafts and abundant precipitation.

Most of the basins are basins, with many tributaries and a wide catchment area. High vegetation coverage (2.2 points).

This question examines a comprehensive analysis of the world's regions. (1) Combined with the latitude and longitude and contour distribution shown in the figure, it is judged that the region is located in the Congo Basin in central Africa. (2) The G River belongs to the Congo River, and its large flow is mainly analyzed from the aspects of climate, tributary distribution, and basin area.

Well, how can there be a river on the ridge?