Solar energy era and solar thermal power generation
Compared with countries similar in land area or topography to China, China has less arable land. The proportion of arable land in the country’s total land area is only 10% in China, 20% in the United States, 12% in mountainous Japan, and 56% in India. The rate of decrease in cultivated land in China is …
Arable land resistance to sustainable development in China Read More »
In the past 30 years, China’s economy has achieved unprecedented and sustained high-speed growth. However, due to the rapid expansion of resource development and the rapid growth of energy consumption, China’s ecological damage and environmental pollution have reached a very serious level. The solid waste generated per unit of output value is 10 times higher …
Environmental resistance to sustainable development Read More »
City with nowhere to throw With the rapid advancement of urbanization, the amount of garbage generated in cities is increasing. At present, the total amount of urban waste has accounted for more than 90% of the total global waste, becoming a major global “public hazard” today. According to figures released by the State Environmental Protection …
Land degradation China is one of the countries with the most serious desertification in the world. At present, China’s desertified land covers an area of 2.64 million square kilometers, accounting for 27% of the country’s land area. The land desertification area expanded by 1500km2 in the 1950s and 2100km2 in the 1970s. From 1994 to …
Status of land degradation and acid rain in China Read More »
China’s per capita water resources are about 2,300m3, which is equivalent to 1/4 of the world’s per capita and 1/5 of that of the United States. It is one of the 13 water-poor countries with very few per capita water resources in the world. China’s agriculture is short of 30 billion cubic meters of water …
The recommendations made by the United Nations Conference on Environment and Development in Chapter 18 of Agenda 21 – Protecting the Quality and Availability of Freshwater Resources: An Integrated Approach to Water Resources Development, Management and Use, the resolution to establish “World Water Day” aims to make the whole world pay attention to and solve …
In the quest for a more harmonious relationship between development and the environment, it has been recognized that there are three interrelated components of human influence, which can be thought of as the product of population, consumption, and technological factors. Impact on the environment = population × consumption × technology. In China, the demographic factor …
A flood of waste The production systems and high-consumption lifestyles of developed countries based on high consumption of energy and resources not only put great pressure on resources and the environment, but also generate a large amount of garbage and hazardous waste. It is estimated that the world adds 10 billion tons of garbage every …
Every inch of fertile soil is a complex organic system. In this system, the substances necessary for life rely on solar energy to cycle over and over again, from plants to animals, to bacteria in the soil, and back to plants. In addition to many other nutrient chemicals, carbon and nitrogen are the two basic …
The “misunderstanding” of energy use – modern high-energy agriculture Read More »
In the process of oil drilling, extraction, refining, transportation and use, some oil will be lost to the surrounding environment, and some losses are unavoidable during the operation (see Figure 1). The recovery rate of oil in the ore vein is 30% when mining oil, and the recovery rate can reach 40% to 50% when …