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The Loess Plateau cannot be bulldozed and cannot be bulldozed!
The Loess Plateau has a height, which can block the monsoon, causing the monsoon to rise and form rainfall, so there will be large rivers in the downstream and form an ecology!
If you bulldoze the Loess Plateau, do not think that its climate will be better, on the contrary, it will cause less rain due to its inability to affect the flow of air, and not only will the Loess Plateau itself not rain, but even the downstream areas of its windward direction will be arid!
This is the same as the source of the Yangtze River and the Yellow River, which are high mountains, no highlands, no rainfall, no rivers, and no ecology!
Why is Africa very poor, because Africa has no high mountains, almost a plain, so the rivers can't cross the continent, they dry up halfway through, the mountains are not high, the rainfall is less, and the potential energy of the river water is also small, so it can't irrigate more land!
Therefore, although the Loess Plateau itself is arid, it does benefit the vast area downstream, affecting the airflow and producing rainfall! The landlord thinks about it!!
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The natural existence of the environment is an inevitable state of its own, just like mountains and plains have their own characteristics, the Loess Plateau cannot be bulldozed and should not be bulldozed, human beings can only better care for it, cherish it, transform it, not completely destroy it, change it, it is not only against the laws of nature, but it is not conducive to local development, I think you just saw his downfall, so I feel this way, now what we can do is to return farmland to forests, reduce soil erosion, but it will take time and several generations of efforts, I think you can become an active part of it.
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It's possible in a small area, but not in a large area, because it's a semi-arid area, and the climatic conditions dictate the ecology here.
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Yes, refer to the spirit of Yugong moving mountains.
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Theoretically, it is possible, but with a few nuclear bombs, it may be lower than the sea level.
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Yes, you can bulldoze as long as you're happy.
Still dozens of atomic bombs.
All of a sudden, it is easy to level the ground.
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The main reason for the flooding of the Yellow River is a large amount of soil erosion when passing through the Loess Plateau, but the main economy of the people on the Loess Plateau is farming, so the state actively encourages them to plant fruit trees, which not only has economic income, but also ensures water and soil, so it seems that the improvement of natural conditions there is likely to be realized.
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The iron pestle is sharpened into a needle, as long as you have the spirit of Yugong moving mountains.
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This one is older! You have to consider many factors, such as the environment, money, and society.
After bulldozing, you have to block the Yellow River, where are you going to find all this money?
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As soon as the water washed away, the Loess Plateau collapsed.
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It should not be possible, but it can be governed, such as planting trees.
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Treating the disease and curing the root cause, I'm afraid this method will not work.
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You put the oil in reserve first, wait for me, and I'll contact the excavator for you.
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Can you finish drinking the Atlantic?
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Summary. According to your question, mine is: the Loess Plateau is not a stacked plain.
The general characteristics of the Loess Plateau in China are dense valleys and undulating terrain. If we look down from the sky, we will find that the vast desert loess area resembles a yellow ocean, with undulating hills and ridges. In areas where the erosion of flowing water is strong, the principle of peace on the Loess Plateau is encroached upon by the flowing water valley into thousands of ravines and fragments.
Even if the top is fairly flat in some areas, the sides are steep.
The Loess Plateau is not a sedimentary plain.
According to your question, mine is: the Loess Plateau is not a piled up plain, and the general feature of the Loess Plateau in China is that it is densely covered with valleys and undulating terrain. If we look down from the sky, we will find that the vast desert loess area resembles a yellow ocean, with undulating hills and ridges.
In the areas where the erosion of eggplant fiber is strong by flowing water, the principle of peace on the Loess Plateau is encroached into thousands of gullies and fragmented by flowing water valleys. Even though the top of the sand is quite flat in some places, the sides are very steep and steep.
The formation of a gentle and vast plain is called a piled plain.
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Favorable effects: 1) The loess soil is loose and the vertical joints are developed, which is especially suitable for digging caves and dwelling, and has the characteristics of warm in winter and cool in summer.
2) The plateau topography has serious soil erosion, but it is suitable for the development of forestry and is conducive to soil and water conservation, especially the development of economic forestry such as apple planting.
3) Good lighting conditions are conducive to the development of comprehensive utilization of solar energy.
Adverse effects: 1) Soil erosion is serious, affecting agricultural production, and soil fertility is getting weaker and weaker.
2) The special terrain of ravines and ravines has brought great inconvenience to people's traffic and affected people's travel.
3) There are many landslides, collapses, and debris flows.
The Loess Plateau has been dominated by planting crops, mainly planting millet and sorghum and other miscellaneous grain crops. The area belongs to the transition zone from semi-humid to semi-arid and arid, monsoon and non-monsoon, agriculture and animal husbandry, and the ecological environment is extremely fragile. There are many natural disasters such as droughts, locust disasters and landslides.
Jianqi area with the most serious soil erosion in China. The Loess Plateau is in the north of China, it starts from the Taihang Mountains in the east, reaches the Wusheling Mountains in the west, connects the Qinling Mountains in the south, and reaches the Great Wall in the north, mainly including Shanxi, Shaanxi, and parts of Gansu, Qinghai, Ningxia, Henan and other provinces, covering an area of 400,000 square kilometers, which is the world's largest loess accumulation area. The loess is 50-180 meters thick, the climate is relatively arid, the precipitation is concentrated, the vegetation is sparse, and the soil erosion is serious.
The Loess Plateau is rich in minerals and has large reserves of coal, oil and bauxite. The evolution process of loess plateaus, beams and ridges is actually the fragmentation process of loess landform, that is, the process of gradual reduction of the top area of the previous landform. This process has led to a shrinking area of arable land; Farming conditions are getting worse and worse; gradual impoverishment of the soil; Soil erosion is intensifying.
The Loess Plateau is a plateau topography with high terrain in the northwest and low in the southeast. Geomorphological characteristics: ravines are vertical and horizontal, and mountains, faults, and basins are distributed alternately. The terrain is undulating, and from a distance it looks uneven and fragmented. Reasons for the formation of the landform of the Loess Plateau:
1. Natural causes:
1) Loess soil is loose and has small soil particles.
2) The vertical joints of loess are such as development.
3) Sparse vegetation.
4) Precipitation is concentrated, and there are many heavy rains.
2. Human causes:
The vegetation was severely damaged, resulting in the inability to store water and soil.
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The Loess Plateau has a wide range, spanning Shanxi Province, northern Shaanxi Province, Gansu Province, Qinghai Province, Ningxia Hui Autonomous Region, Henan Province and other provinces and regions.
About 8 million years ago, the Loess Plateau was a lake. Due to the dry climate and the cold of the shed, the wind is raging, and the flying sand and dust fall to the lake and slowly sink to the bottom of the lake. Over time, the lake became less and less water, and the loess was lifted out of the water, gradually forming a plateau.
The geomorphological characteristics of the plateau are vertical and horizontal ravines, and the distribution of mountains, broken bone valleys and basins alternately.
The terrain is high in the northwest and low in the southeast, and descends in a wave from northwest to southeast. The Loess Plateau is an important energy and chemical base in China. The loess chain cultivates fine grains, soft soil, rich in mineral nutrients, and has a long history of agricultural reclamation in basins and river valleys.
The Loess Plateau gave birth to the unique culture of the loess, and produced the folk dwellings represented by the "cave cave", and the folk literature and art represented by the Xintianyou and the Ansai Zhongsong waist drum.
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The Loess Plateau covers a total area of 640,000 square kilometers, spanning most of the seven provinces and regions of China, including Qingdao, Gansu, Ningbo, Inner Mongolia, Shaanxi, Shanxi and Henan, and is mainly composed of Shanxi Plateau, Shaanxi-Gansu-Jin Plateau, Longzhong Plateau, Ordos Plateau and Hetao Plain.
The Loess Plateau is more than 1,000 kilometers long from east to west and 750 kilometers wide from north to south, including the vast area west of the Taihang Mountains in China, east of the Riyue Mountains in Qinghai Province, north of the Qinling Mountains and south of the Great Wall.
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The extent of the Loess Plateau is west of the Taihang Mountains in northern China, east of the Wusheling Mountains, north of the Qinling Mountains, and south of the Great Wall.
The Loess Plateau is located in the north-central part of China and is one of the four major plateaus in China. In a broad sense, the Loess Plateau is the loess area, with a loess area of 10,000 square kilometers, including 10,000 square kilometers of primary loess and 10,000 square kilometers of secondary loess, which is mainly composed of Shanxi Plateau, Shaanxi-Gansu-Jin Plateau, Longzhong Plateau, Ordos Plateau and Hetao Plain.
In a narrow sense, the Loess Plateau roughly stretches from the Great Wall in the north, to the Qinling Mountains in the south, to the Wusheling Mountains in the west, and to the Taihang Mountains in the east, including most of Shanxi, central and northern Shaanxi, central and eastern Gansu, southern Ningxia and eastern Qinghai, with an area of about 300,000 square kilometers; This entry introduces the Loess Plateau according to a broad definition.
The Loess Plateau is more than 1,000 kilometers long from east to west and 750 kilometers wide from north to south, including the west of China's Taihang Mountain, the east of the Riyue Mountain in Qinghai Province, the north of the Qianheng Qinling Mountains, and the vast area south of the Great Wall.
The Loess Plateau belongs to the arid continental monsoon climate zone, and the tectonic units mainly include the Longdong Platform in northern Shaanxi, the Hualixi Fold Belt, the Pacific-style Yanshan Fold Belt, the Longxi Massif, the Zhongtiao Mountain Massif, the Luliangshan Massif and the Fenwei Lower Sinking Belt, etc., with the Qinling Ridge Axis and the Ordos Platform as the two major boundaries in the north and south.
Bedrock structure of the Loess Plateau:
The bedrock structure of the Loess Plateau is divided into east and west parts by Liupan Mountain, the western part belongs to the Western Regions land mass, and the east part belongs to the North China land mass. The Loess Plateau west of Liupan Mountain is characterized by Cenozoic fault basins, and the bedrock under the loess in Longzhong Basin is the Gansu Group from Miocene to the early Miocene directly deposited on ancient rock layers. After the accumulation of the Gansu group, the ground was uplifted in the late Pliocene, and the Yellow River and its tributaries Tao River, Zuli River and Hulu River were cut down with the uplift, and the bedrock ground became a large undulating hilly shape.
The Gansu group consists of a set of gypsum-containing purplish-red clays, sandy clays, sandstones, and conglomerates. Its diagenesis is poor, the corrosion resistance is weak, and it is very easy to be eroded by gravity under the action of groundwater immersion and lubrication, and often forms large landslides. The North China Continental Platform to the east of Liupan Mountain is composed of the Ordos Terrace and the Shanxi Plateau anticline, and is sandwiched by the Yellow River depression.
The Ordos platform anticline and the Shanxi platform anticline are pre-Sinian platforms that have not been folded and changed.
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The Loess Plateau spans Shanxi Province, northern Shaanxi Province, Gansu Province, Qinghai Province, Ningxia Hui Autonomous Region and Henan Province.
The Loess Plateau covers a total area of 640,000 square kilometers, with a relatively vast area, which is the world's largest loess accumulation area and the largest loess plateau in the world, also known as the Wujin Plateau, located in the north of central China, and belongs to the northern region.
The Loess Plateau has a warm temperate continental monsoon climate, and the tectonic units mainly include the Longdong Platform in northern Shaanxi, the Hualixi Fold Belt, the Pacific-style Yanshan Fold Belt, the Longxi Massif, the Zhongtiao Mountain Massif, the Luliangshan Massif and the Fenwei Downstream Subsidence Belt, etc., with the Qinling Ridge Axis and the Ordos Platform as the two major boundaries in the north and south.
The Loess Plateau is an important energy and chemical base in China. The loess has fine particles, soft soil, rich in minerals and nutrients, and is conducive to farming, and has a long history of basin and river valley farming. With the exception of a few stony mountains, the loess is between 50 and 80 meters thick and up to 150 180 meters thick.
Formation of the Loess Plateau
From the analysis of the development history of the Loess Plateau, there are great differences in the material and external transportation capacity of the loess in the Early and Middle Pleistocene and the late Pleistocene. The location of the source area, that is, the area with the most complete loess development, was a basin in the Early and Middle Pleistocene, and the material in the basin was mainly from the weathered crust of the surrounding mountains.
According to the early and middle Pleistocene loess layers, the bottom of the loess layer is often a silt layer or a mixed zone (red and yellow mixed subclay), the loess itself is relatively dense, and its internal structural characteristics such as microbedding and clay clay masses are determined, so it is determined that the external force is mainly water. As for the late Pleistocene, the loess pouting area has been raised from the basin to the plateau, and considering that the desert in the north and northwest of the plateau has been well developed, the loess material at this time is mainly the northern desert area, and the moving capacity is mainly wind.
This can be confirmed from the loose structure and single composition of Malan loess. In addition to the formation of loess such as water and wind, the most important thing is that an indispensable condition for the formation of loess is that there must be a weathering process after the accumulation of loess materials, that is, the loess process. Therefore, in addition to biological effects, the causes of loess are the most important reasons for the formation of loess under specific dry and early or semi-arid continental climate conditions.
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