Live Wild Eater

Chapter 180 Species Rich Hills

This is already the tenth day that Rhodes has been here, and he has not only eaten a lot of beef these days, he has even gotten a little fat.

Now he is setting off for adventure again and leaving here.

After walking for a long time, he suddenly saw the scenery in front of him. He stood in surprise and didn't speak. The water friends were also stunned.

He laughed and said, "Haha, that is hilly terrain. Hilly is one of the basic landforms of the five continents in the world. It refers to the undulating and gentle surface of the earth's lithosphere. The absolute height is within 500 meters and the relative height is not more than 200 meters. It is a combination of slopes composed of different types, with little undulations, gentle slopes, rough ground, and continuous low hills.

The slopes of hills are generally low and gentle, cut and broken, have no certain direction, generally have no obvious veins, and are rounded at the top. They are the product of long-term erosion of the mountains.

He continued walking and said, "China mainly has the southeastern hills, the Jiangnan hills, the Jianghuai hills, the Zhejiang-Fujian hills, the Guangdong-Guangzhou hills, the Shandong hills, the Liaodong hills, the central Sichuan hills, and the loess hills, with a total area of ​​about 100 million square kilometers.

Hills are widely distributed on land, and are generally distributed in the transition zone between mountains or plateaus and plains. The precipitation in hilly areas is relatively abundant, which is suitable for the cultivation and growth of various economic trees and fruit trees, and is very beneficial to the development of various economies. "

He talked a lot and was in a good mood.

Hills generally have an altitude of more than 200 meters and less than 500 meters, and their relative heights generally do not exceed 200 meters. They have little undulations, gentle slopes, rough ground, and are composed of continuous low hills.

Hills generally have no obvious veins and are rounded at the top. They are the product of long-term erosion of the mountains.

Hills are widely distributed on land, and are generally distributed in the transition zone between mountains or plateaus and plains. There are large areas of hills in Eurasia and North and South America.Precipitation is more abundant in hilly areas.

The definition of hills varies from place to place.In a relatively flat place, a height difference of 50 meters may be called a hill, while near a mountainous area, a height difference of more than 100 to 200 meters may be called a hill.Structure The shape and structure of the hills are quite "accidental", it does not have a very obvious topographical structure, which reflects the factors of the weathering process when the hills were formed, and the rivers in the hills rarely flow in parallel like the mountains.

This is because hills tend to be formed for a different reason than mountains.Mountains are generally folds and faults caused by the movement of the earth's crust, and rivers generally flow along these faults, so they generally run parallel to the mountains.

The settlements in the hills are both high and low, and they rarely have the same characteristics. The main reason is that in the past, when humans established settlements, they considered factors such as sunshine time, water source, and leeward, while these factors in hilly areas It is very mixed, so the established settlements are also very diverse. Similarly, the layout of fields in hilly areas is also very diverse. In hilly areas that are good at farming, the small structure of hills is more obvious. The crops in a field are also different, many of which are a mixture of grain, vegetables, orchards and woods.

According to the relative height, it is divided into high hills above 200 meters and low hills below 200 meters;
According to the steepness of the slope, it is divided into: > 25° and above are called steep hills, and < 25° are called gentle hills;

According to different lithological compositions, it can be divided into: granite hills, volcanic rock hills, various sedimentary rock hills, such as laterite hills, loess Liangmao hills, etc.;

According to the cause of formation, it can be divided into: structural hills, denudation-flattened hills, volcanic hills, eolian dune hills, desert hills, karst hills and permafrost hills, etc.;
According to the distribution location, it can be divided into: intermountain hills, piedmont hills, plain hills, and on the bottom of the ocean, called ocean hills, etc.

Hilly areas, especially the hilly areas between mountains and plains, are often supplied by groundwater and surface water in front of the mountains and are rich in water. Since ancient times, they have been an important habitat for humans to rely on mountains and rivers, flood control, and farming. It is also a place for high-yield fruit trees land.Because of its unique scenery, it can be turned into a tourist attraction.

"So do you know where the largest hill in the world is??"

Audience friends listened with gusto, and the sudden question made them stunned, it seems to be from Sichuan!or where?Damn, all the knowledge of geography has already been returned to the teacher, who knows where?

“是哈萨克丘陵。它的东西长度大约为1200千米，南北宽度约为400—900千米之间。海拔约为300～500米之间。这里东部相对比较高，500—1000米之间，宽度大约为400公里，地表切割的痕迹比较明显。”

“Some of the hilly lands are zoned as flora and fauna nature reserves covered with dense forest vegetation. There are various types of wild animals such as tigers, elephants, leopards, bears, sambars, Himalayan gorals, crocodiles etc. The Downs have been endowed by nature with a vast area of ​​biodiversity and a spectacular range of wildlife, forming one of the most stimulating and vibrant landscapes in the world."

As he spoke, he suddenly saw a herd of antelopes galloping, and Rhodes became excited, "Look what we saw? That's an antelope, haha, there's more meat tonight."

Are you going to hunt antelope?
Audience friends were puzzled, of course he wanted to eat, how could he let go of such delicious mutton!

He did what he said, and immediately rushed over, taking out the black gold knife to hunt animals, but a tiger saw him from a distance, he was startled, and suddenly stopped the galloping figure.

With lingering fear, he said, "It's dangerous, I shouldn't be so reckless, I should think more about safety before acting."

"This is a tiger." He explained again, "The scientific name of the tiger is Panthera tigris, and we commonly call it a tiger. It is Northeast Asia and Southeast Asia. Tiger is a highly evolved predator and an indispensable part of the ecology of nature.

成年虎的身长可达2-3.5米，尾长1米，重达200-350公斤。

Their most distinctive feature, apart from their large size and muscularity, are the black vertical stripes on their white or orange-red fur, which are lighter on the underside.

Extremely ferocious and powerful, it was originally known as the king of the forest and the king of beasts.The lion is called the king of all beasts or the emperor of all beasts. "

"Do you know where the tiger got its name?"

The little trick made them think, where is it?Is it in our country?Or in a foreign country?
A mischievous water friend said, "It must be either in our country or in a foreign country."

It made some water friends laugh.

Rhodes also said with a smile, "It comes from the poems of Song Dynasty poets, Su Zhe's "Lake Yin Song": "The tiger lies in the den, and the hunter dare not peep. "Yuan Wang Yun's "Zhao Miao's Tour of Tigers": "Where the tiger is coming, why not sit on the boulder?" "

The audience friends were shocked. They were actually two poets from the Song Dynasty. They had to shout in their hearts, awesome.

(End of this chapter)