The latest satellite data from 2000 to 2017 shows a greening pattern that is very prominent in China and India and overlaps with other countries’ agricultural land. The study, uploaded in Nature Sustainability, uses the Moderate Resolution Imaging Spectroradiometer (MODIS) of the United States Space and Space Agency (NASA) that uses satellite technology to document the surface of the earth every day. The green vegetation area shown by the satellite in this study was caused by direct factors and indirect factors. The direct factor is management of land use by humans while indirect factors such as climate change, fertilization of carbon dioxide, precipitation of nitrogen, and recovery from natural disturbances.
Satellite data shows that globally one third of the vegetation area is green and only five percent is brown. 6.6 percent of the green vegetation area is in China. China contributes 25 percent to the increase in global greening efforts. China and India, two developing countries, contribute the most in efforts to reforest the land. Greening in China comes from forests at 42 percent and agricultural land by 32 percent while in India most of it comes from agricultural land at 82 percent and forests at only 4.4 percent. The study sees China has implemented several large-scale programs to restore and protect its forests. While in India the production of fertilizer and irrigation use in agricultural land makes this country increase its food production.
However, it is not known how long the earth will be green because there are signs that explain it will not last long. Some new research says when the planet starts to warm up and the soil is dry, the plants will lack water and cause a decrease in plant growth. Fertilizing carbon dioxide and climate change is still important. Carbon dioxide in the atmosphere is still responsible for the green changes seen in 17 years. Although studies from show that human land use such as forest and agricultural land management has a greater impact than previously thought. This finding is somewhat difficult for scientists to use computer models to study the earth. Fertilizing carbon dioxide is relatively easy to calculate with equations even though there are several other disorders. Human land use is rather random and very difficult to predict.