I. Historical background and geographical location of Machu Picchu
1.1 Historical Background
Machu Picchu dates back to about the 15th century AD and was an important city built during the Inca Empire. The Inca Empire was the most developed and powerful empire in the ancient Indian civilization of South America. Its territory was centered on today’s Peru, reached Colombia and Ecuador in the north, and reached central Chile and northern Argentina in the south, with its capital in Cusco. The builder of Machu Picchu, Pachacutec, as the legendary monarch of the Inca empire, he not only led the Incas to defeat the invaders, but also created the first empire in the history of the Americas, known by historians as “Alexander the Great of the Andes.” It was on his orders that the magnificent city of Machu Picchu rose on a ridge more than 2,000 meters above sea level.

1.2 Geographical Location
Machu Picchu is located approximately 75 km northwest of the province of Khazco, Republic of Peru, with geographical coordinates of 13°9 ’23 “south latitude and 72°32′ 34” west longitude. Towering on a ridge some 2,350 metres above sea level, overlooking the Urubamba Valley, the site is surrounded by lush tropical jungle. This unique location not only makes Machu Picchu an ideal military fortress, but also adds a bit of mystery and grandeur to it. Due to its location and seclusion, Machu Picchu was a military secret during the Inca Empire until the Spanish invasion in the 16th century, when the city was abandoned and gradually forgotten.

Ii. Architectural style and characteristics of Machu Picchu
2.1 Architectural Style
The architectural style of Machu Picchu embodies the unique intelligence and creativity of the Inca people. The whole city is built around the mountains, making full use of the topography, and perfectly integrating the architecture with the natural environment. The layout of the city is scattered and divided into three parts: sacred area, civilian area and noble area. Located at the highest point of the city, the Sacred Quarter is a place for religious ceremonies and worship of the sun god Inti; The civilian areas were in the lower parts of the city, where ordinary Incas lived; The aristocratic quarter was built on the mountain and had more luxurious and spacious houses.

2.2 Architectural Features
The architectural features of Machu Picchu are mainly reflected in the following aspects:

Megaliths: Machu Picchu’s buildings are all made up of huge blocks of stone, which weigh several tons or even tens of tons, but the Incas were able to stitch them together tightly to form a solid structure without using any bonding materials. This kind of architectural excellence is breathtaking.
Precise alignment: Machu Picchu’s architecture is not only solid, but also precisely aligned. The gaps between the walls and stones of many buildings are so narrow that even a dagger cannot penetrate them. This precision reflects not only the Inca’s exquisite craftsmanship, but also their deep understanding of astronomy and geometry.
Trapezoidal structure: Although the Incas understood circles and regarded the sun as a deity, circular elements are rarely seen in the architecture of Machu Picchu. Instead, they preferred to use trapezoidal structures, which not only contributed to the stability of the building, but also reflected the Inca’s respect and adaptation to the natural environment.
Water system: Machu Picchu also has a well-developed water system, including canals and drainage facilities. These facilities can not only effectively prevent floods and mudslides during the rainy season, but also provide irrigation water for the surrounding farmland. The existence of these water systems is further evidence of the Inca’s superior ability in urban planning and water management.
Third, Machu Picchu construction materials and technology level
3.1 Use of materials
Machu Picchu’s building materials are mainly derived from local granite. This rock is hard and easy to cut into regular shapes, making it ideal for construction. Using simple tools such as hammers and chisels, the Incas carved huge blocks of granite into shapes and then pieced them together with precision. In addition, they also bring in special stones from quarries 30 kilometers away to meet the needs of specific buildings.

3.2 Technological Level
The Incas demonstrated a high level of craftsmanship in building Machu Picchu. They not only mastered accurate measurement and alignment techniques, but also invented some unique transportation and installation tools. For example, they used equipment such as pulleys and ramps to move boulders to where they were needed; Use tools such as a “human lift” to safely place the boulder high up. The application of these tools and techniques not only improves the construction efficiency, but also ensures the quality and stability of the building.

Fourth, Machu Picchu’s literary value, historical significance and influence on later generations
4.1 Literary value
Machu Picchu, the lost city of the Inca Empire, has inspired countless writers and poets. Many literary works have been set or themed around Machu Picchu, depicting the mystery and magnificence of the ancient city through rich imagination and delicate brushstrokes. These works not only enrich the treasure house of world literature, but also let more people know and pay attention to Machu Picchu and the historical culture behind it.

4.2 Historical Significance
The historical significance of Machu Picchu is that it is a witness to the splendid civilization of the Inca Empire. The city not only showcases the Inca’s outstanding achievements in architecture, water conservancy, astronomy, etc., but also reflects their respect for the natural environment and wisdom in the use of it. The existence of Machu Picchu gives us a glimpse of the brilliance and wisdom of an ancient empire that has disappeared, and makes us cherish and respect every achievement of civilization in human history.

4.3 Impact on Later generations
The influence of Machu Picchu on later generations is manifold. First of all, it stimulated people’s curiosity and desire to explore ancient civilizations, and promoted the development of related disciplines such as archaeology and history. Secondly, Machu Picchu, as a world cultural heritage and tourist attraction, has injected new vitality into the economic development of Peru and even South America. Finally, Machu Picchu has become a common cultural heritage and spiritual wealth of mankind, reminding us to cherish and protect every precious heritage in human history.

5. Personal opinions and feelings
   Standing on the ruins of Machu Picchu, I felt as if I could travel through a tunnel of time and space and feel the brilliance and wisdom of that ancient empire. Every corner of the city exudes a mysterious atmosphere that makes people wonder. Machu Picchu is not only a city, but also a spiritual symbol – it represents human’s reverence for nature, the pursuit of wisdom and the yearning for a better life.

The reason why Machu Picchu can become one of the “New seven wonders of the world” is not only because of its unique geographical location and exquisite architectural skills, but also because of the historical and cultural value it carries and the far-reaching impact on later generations. This ancient city makes us realize the diversity and richness of human civilization, and it also makes us cherish and respect each and every achievement of civilization.

I also feel the importance and urgency of protecting Machu Picchu. With the continuous development of tourism, this ancient city is facing more and more challenges and threats. Therefore, we need to take more effective measures to protect the ecological environment and cultural heritage of Machu Picchu and its surroundings. Only in this way can we keep this ancient city shining in the long stream of human civilization.

Machu Picchu is an ancient city full of mystery and charm, which bears witness to the brilliance and wisdom of the Inca Empire, and also carries the common cultural heritage and spiritual wealth of mankind. Through in-depth understanding and exploring the historical background, geographical location, architectural style and architectural features of Machu Picchu, we can have a more comprehensive understanding of the unique charm and far-reaching influence of this ancient city. At the same time, we should cherish and protect this precious heritage, so that it will continue to shine in the years to come.

I. Geographical location and ecological environment of the Amazon jungle
The Amazon jungle is located in the northern part of South America, its northern edge extends to the Guyana Plateau, its southern edge extends deep into the Brazilian plateau, its western edge borders the Andes Mountains, and its eastern edge reaches the Atlantic coast. This unique geographical location makes the Amazon jungle not only rich in precipitation, but also forms a complex and diverse ecosystem. In the tropical rainforest climate, the Amazon is hot and humid throughout the year, with heavy rains, the daytime temperature is about 33 degrees Celsius, and the night temperature is about 23 degrees Celsius, which provides unique conditions for the growth of all things in the jungle.

The Amazon River, the second longest river in the world, is about 6,440 kilometers long (some say 6,400 kilometers), starting in the Peruvian Andes, flowing east through the Amazon basin, and finally into the Atlantic Ocean. The Amazon and its many tributaries, such as the Madeira, not only supply the jungle with abundant water, but also form an intricate network of rivers that nourishes the vast land. The abundance of the river makes the Amazon jungle extremely humid, and the high temperatures combine to create a lush and complex ecosystem.

Biodiversity of the Amazon jungle
The Amazon jungle is known as the “lungs of the Earth” and its biodiversity is breathtaking. It is estimated that there are about 300,000 plant species in jungles, accounting for more than a tenth of the world’s plant species, including many endemic species. Among these plants, many large trees are more than 60 meters high, obscuring the sky and the sun, forming a unique canopy structure of rain forest. Under this structure, light is difficult to penetrate, making the surface plant species relatively few, but the canopy is full of vitality, a variety of vines, parasitic plants, orchids, kudana, etc., compete to grow, forming a patchwork three-dimensional landscape.

Animal resources are also rich and diverse. More than 40,000 species of vertebrates live in the Amazon jungle, including 2,500 species of fish, more than 1,600 species of birds, more than 400 species of mammals and more than 300 species of reptiles. It is not only home to star species such as jaguars, sloths and macaws, but also many species that are not fully understood by the scientific community. For example, the marmosets, which are only 10 centimeters long, the lion-headed monkeys, which have the mane of a male lion on their side, and the colorful and beautiful tropical fish are all unique creatures of the Amazon jungle.

The insect world is equally exciting. More than 2.5 million species of insects live in the Amazon jungle, including more than 700 species of butterflies, more than 600 species of beetles, and more than 400 species of ants and spiders. These insects play an important role in the ecosystem, from pollination to the decomposition of organic matter, they are indispensable.

The importance of the Amazon jungle in the Earth’s ecosystem
The Amazon jungle is not only a treasure trove of biodiversity on Earth, but also an important part of the Earth’s ecosystem, having a profound impact on the global climate, water resources and ecological balance.

Regulating climate: The Amazon jungle absorbs large amounts of carbon dioxide through photosynthesis and releases oxygen, helping to mitigate global warming. It is estimated that the Amazon rainforest contributes 20% of the total global photosynthesis and is crucial to maintaining the carbon and oxygen balance in the Earth’s atmosphere. At the same time, vegetation in jungles can also release large amounts of water vapor through transpiration, which rises with air currents to form clouds and precipitation, thereby affecting global weather patterns.
Water conservation: The Amazon River and its tributaries not only provide ample water for life in the jungle, but also an important freshwater resource in South America and the world. Jungle vegetation cover reduces surface runoff and increases groundwater storage, providing a valuable source of fresh water for the surrounding region and globally. In addition, the vegetation of the Amazon jungle can regulate the speed of water flow and reduce the occurrence of floods.
Ecological balance: The complex ecosystem of the Amazon jungle supports the survival and reproduction of many species. Plants, animals and microorganisms form a complex food chain and ecological balance relationship, and the destruction of any link may trigger a chain reaction, affecting the stability of the entire ecosystem. For example, large trees in rainforests provide habitat and food sources for many animals, and the activities of these animals promote the dispersal of plant seeds and the fertility cycle of the soil.
The positive role and conservation significance of the Amazon jungle
The Amazon jungle plays a positive role in protecting biodiversity, reducing disasters and improving the environment. However, with the continuous expansion of human activities, this green kingdom is facing unprecedented threats. Activities such as deforestation, wildfires, climate change, mineral extraction and agricultural development have severely damaged the ecological environment and biodiversity of the Amazon jungle. Therefore, it is particularly important to strengthen the protection and management of the Amazon jungle.

Conservation of biodiversity: The rich biodiversity of the Amazon jungle is a valuable natural heritage of humanity. Protecting this jungle means protecting tens of thousands of species from extinction and maintaining the stability and balance of the Earth’s ecosystems. Governments and international organizations should work together to develop and implement conservation plans to crack down on illegal logging and poaching.
Disaster risk reduction: Vegetation cover and soil water retention in the Amazon jungle are important for reducing natural disasters such as floods and droughts. Protecting the jungle can maintain the stability of the surface runoff and reduce the occurrence of soil erosion and debris flow. At the same time, the rich biodiversity of the jungle also provides a natural barrier against natural disasters.
Improve environmental quality: The green vegetation of the Amazon jungle helps to clean the air, regulate the climate and improve water quality. Protecting the jungle can reduce air pollution and water pollution, and improve the environmental quality of the surrounding region and the world. In addition, the rich medicinal plant resources in the jungle also provide mankind with a valuable source of drugs to treat various diseases.
Conservation and management cases: efforts and results in Brazil
Faced with the severe situation of the Amazon jungle, the Brazilian government has taken a series of measures in recent years to strengthen protection and management. For example, increase the number of forest protection law enforcement personnel, and prohibit the issuance of forest and land ownership certificates to those who occupy illegal land; Encourage cattle-raising to save land, and help residents switch from logging to tourism; Fund the employment of loggers engaged in forest protection work; Protect the land rights and property rights of indigenous peoples and prohibit the illegal use of indigenous lands and property; Encouraging profits from by-products rather than from deforestation, etc.

The implementation of these measures has achieved certain results. According to statistics, the rate of deforestation in the Amazon jungle has slowed in recent years, and positive progress has been made in vegetation restoration efforts in some areas. At the same time, with the increasing public awareness of environmental protection and the increasing attention of the international community, more and more companies and individuals are joining the ranks of protecting the Amazon jungle. They support the protection of the jungle through donations and volunteer services, and contribute to the future of the Amazon jungle.

Conclusion: Build a green future together
The Amazon jungle is one of the most valuable natural resources on earth, which not only has rich biodiversity and unique ecological environment, but also has a profound impact on global climate, water and ecological balance. However, with the continuous expansion of human activities and the intensification of global climate change, the Amazon jungle is facing unprecedented threats. Therefore, strengthening the protection and management of the Amazon jungle has become a shared global responsibility and mission.

We call on governments, international organizations, businesses and individuals to work together to take effective measures to protect the Amazon jungle and its biodiversity. Jointly address challenges and crises by strengthening law enforcement, promoting sustainable development models, and raising public awareness of environmental protection. Let us work together to build a green, healthy and harmonious earth home so that the Amazon jungle will always be the most beautiful scenery on earth.