Changes in the flow of the Mekong River as it flows through the middle reaches of the river

Water flow velocity. strengthened, the erosive effect intensified.

The characteristics of the water system of the Mekong River are as follows: (1) The river originates in the Qinghai-Tibet Plateau region of China, and its main stream flows roughly from north to south and flows into the South China Sea; (2) The upper reaches of the river are relatively straight, forming a very sharp "V" shaped valley, and the middle and lower reaches of the river are wide and curved, forming a trough-shaped valley. (3) The upstream flows through the alpine valley area, with short and few tributaries, and the downstream flows through the plain area, with many tributaries. There are more and longer tributaries on the west side of the main stream, and fewer and shorter tributaries on the east side of the main stream.

On the whole, it belongs to the dendritic water system; (4) The downstream water network is relatively dense, there are many rivers entering the sea, and the delta area is large.

It flows from northwest to southeast and flows into the South China Sea.

The Mekong River originates on the northeastern slope of the Tanggula Mountains in China, and is called the Mekong River after it flows into the Indochina Peninsula in China. With a total length of 4,909 kilometers, the main stream of the Mekong River is the most important transnational river system in Asia and the seventh largest river in the world.

The upper reaches of the Mekong River are the Lancang River in China, and the downstream delta is in Vietnam.

The general flow direction is from north to south. It originated in China and flows into the Gulf of Thailand through Myanmar, Laos, Thailand, Cambodia and Vietnam. Select D

bThe Mekong River, with a total length of 4,880 kilometers, is the most important transnational river system in Asia and the sixth largest river in the world; The main source is Zhaqu, which originated in Zaduo County, Yushu Tibetan Autonomous Prefecture, Qinghai Province, China. It flows through China, Laos, Myanmar, Thailand, Cambodia and Vietnam, and flows into the South China Sea at Ho Chi Minh City, Vietnam. With the exception of China and Myanmar, the basin is a member of the Mekong River Commission.

The upper reaches of the Mekong River are in China, called the Lancang River, and the lower delta is in Vietnam, which is called the Jiulong River, with a total length of 2,139 kilometers.

Characteristics of the water system of the Mekong River: The Mekong River originates in the southeast of the Qinghai-Tibet Gaodu Plain in China, and flows through the gorge in the upper reaches, with a narrow channel and a rapid water flow; The downstream flows through the plain area, the river channel is curved, and the water flow is gentle; There are some tributaries that join in.

The hydrological characteristics of the Mekong River: the river has a large amount of water, and the summer rainy season forms a flood season, and the flood season is relatively long; The sediment content of the river is relatively small; There are no ice periods;

There is no doubt about the choice :d

Analysis: The fastest way is the elimination method. The Mekong River is located in China's South Asia, 108,000 miles away from Xinjiang, so it is impossible to have an optional role. And with that, the answer comes out.

Specifically, the only special coastal province included in the western development is Guangxi, and the Mekong River is in Guangxi, and Yunnan. The development role is obvious. The development of rivers will inevitably involve road traffic and river management, so that the development of tourism will also follow.

The Mekong River flows through the main countries, that is, the countries of the Indochina Peninsula and the major countries of the Association of Southeast Asian Nations (ASEAN). So, this effect is also obvious. So, choose D.

d, I took this question last week

The source of the Mekong River: It originates in the Qinghai-Tibet Plateau (Zaduo County, Yushu Tibetan Autonomous Prefecture, Qinghai Province, China), and is called the Lancang River in its upper reaches.

Injected into the sea : South China Sea.

Flow direction: Roughly from northwest to southeast.

The northern part is higher and connects the southwestern part of China, while the southern part is gentle and has a dense water network. The rivers are distributed from north to south, with mountains and rivers interspersed and longitudinal fissures; The climate is dominated by tropical monsoon climate, with obvious alternation of dry and wet seasons. The vegetation is dominated by tropical monsoon forests.

The main hydrological characteristics of the Mekong River: large upstream drop, rapid water flow, abundant hydraulic resources; The downstream flow is large, and the water flow is flat and stable; The sediment content is small and the seasonal variation is large.

Formation of the Genshin Impact Chain Cause:

1. The precipitation in the basin is abundant and the river volume is large.

2. The mountains on both sides of the river are relatively close to the Sun vein.

3. The terrain is low and flat, and the river runoff is large.

4. The Mekong River is in a tropical monsoon climate with large annual precipitation, especially in summer. In summer, it is affected by the southwest monsoon and has abundant precipitation.