Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. About 31% of Earth's land surface is covered by forests at present. This is one-third less than the forest cover before the expansion of agriculture, with half of that loss occurring in the last century. Between 15 million to 18 million hectares of forest, an area the size of Bangladesh, are destroyed every year. On average 2,400 trees are cut down each minute. Estimates vary widely as to the extent of deforestation in the tropics. In 2019, nearly a third of the overall tree cover loss, or 3.8 million hectares, occurred within humid tropical primary forests. These are areas of mature rainforest that are especially important for biodiversity and carbon storage.
Reforestation is the practice of restoring previously existing forests and woodlands that have been destroyed or damaged. The prior forest destruction might have happened through deforestation, clearcutting or wildfires. Two important purposes of reforestation programs are for harvesting of wood or for climate change mitigation purposes. Reforestation can also help with ecosystem restoration. One method for reforestation is to establish tree plantations, also called plantation forests. They cover about 131 million ha worldwide, which is 3% of the global forest area and 45% of the total area of planted forests.
Environmental issues in Bolivia include deforestation caused by commercial agriculture, urbanization, and illegal logging, and biodiversity loss attributed to illegal wildlife trade, climate change, deforestation, and habitat destruction. Since 1990, Bolivia has experienced rapid urbanization raising concerns about air quality and water pollution.
Environmentally, Colombia is a mega-diverse country from its natural land terrain to its biological wildlife. Its biodiversity is a result of its geographical location and elevation. It is the fourth largest South American country and only country in South America to have coasts on the Pacific and Caribbean Sea. Colombia's terrain can be divided into six main natural zones: The Caribbean, the Pacific, The Orinoco region, The Amazonia region, the Andean region, and the Insular region. 52.2% of the environment is predominately the Andes, Amazon, and Pacific Basins, followed by the Orinoco basin 13.9%, the Andes and the Caribbean. The Tropical Andes, Choco, and the Caribbean are considered biodiversity hotspots which puts these areas at high risk of concentration of colonizing activities. Colombia host over 1800 bird species and at least one new species are detected every year. Decades of civil war and political unrest have impeded biological and environmental research in Colombia. The political unrest in Colombia catalyzes the alteration of land patterns through the cultivation of coca and opium crops, the redirection of extractive activities, and land abandonment in some areas.
Environmental issues in Indonesia are associated with the country's high population density and rapid industrialisation, and they are often given a lower priority due to high poverty levels, and an under-resourced governance.
Environmental issues in Pakistan include air pollution, water pollution, noise pollution, climate change, pesticide misuse, soil erosion, natural disasters, desertification and flooding. According to the 2020 edition of the environmental performance index (EPI) ranking released by Yale Center for Environmental Law & Policy, Pakistan ranks 142 with an EPI score of 33.1, an increase of 6.1 over a 10-year period. It ranked 180 in terms of air quality. The climatic changes and global warming are the most alarming issues risking millions of lives across the country. The major reasons of these environmental issues are carbon emissions, population explosion, and deforestation.
Environmental issues in Nepal include a number of issues, such as deforestation, climate change, energy and species conservation. Many of these issues have been precipitated by rapid industrialization without major environmental regulation.
African environmental problems are problems caused by the direct and indirect human impacts on the natural environment and affect humans and nearly all forms of life in Africa. Issues include deforestation, soil degradation, air pollution, water pollution, coastal erosion, garbage pollution, climate change, Oil spills, Biodiversity loss, and water scarcity. These issues result in environmental conflict and are connected to broader social struggles for democracy and sovereignty. The scarcity of climate adaptation techniques in Africa makes it the least resilient continent to climate change.
The extensive and rapid clearing of forests (deforestation) within the borders of Nigeria has significant impacts on both local and global scales.
Rates and causes of deforestation vary from region to region around the world. In 2009, two-thirds of the world's forests were located in just 10 countries: Russia, Brazil, Canada, the United States, China, Australia, the Democratic Republic of the Congo, Indonesia, India, and Peru.
The environment of Malaysia is the biotas and geologies that constitute the natural environment of Malaysia. Malaysia's ecology is megadiverse, with a biodiverse range of flora and fauna found in various ecoregions throughout the country. Tropical rainforests encompass between 59% and 70% of Malaysia's total land area, of which 11.6% is pristine. Malaysia has the world's fifth largest mangrove area, which totals over a half a million hectares.
Palm oil, produced from the oil palm, is a basic source of income for many farmers in South East Asia, Central and West Africa, and Central America. It is locally used as cooking oil, exported for use in much commercial food and personal care products and is converted into biofuel. It produces up to 10 times more oil per unit area than soybeans, rapeseed or sunflowers.
Deforestation in Indonesia involves the long-term loss of forests and foliage across much of the country; it has had massive environmental and social impacts. Indonesia is home to some of the most biologically diverse forests in the world and ranks third in number of species behind Brazil and the Democratic Republic of Congo.
Environmental issues in Russia include pollution and erosion, and have impacts on people, wildlife and ecosystems.
Environmental issues in Chile include deforestation, water scarcity, pollution, soil erosion, climate change, and biodiversity loss, especially in its industry-heavy "sacrifice zones". The country of Chile is a virtual continental island that spans over 4,200 kilometers. It is bounded by the Pacific Ocean on the west, the Andes Mountains on the east, and the Atacama Desert in the north; it is home to several important eco-regions, such as the Chilean Winter Rainfall-Valdivian Forests, a biodiversity hot-spot that harbors richly endemic flora and fauna, and the Tropical Andes, which stretches into northern Chile. The country has a wide variety of climates due to its large size and extreme geographical features including glaciers, volcanoes, rain forests, and deserts. Chile faces many environmental issues that impact both its people and economy.
Palm oil production is important to the economy of Indonesia as the country is the world's biggest producer and consumer of the commodity, providing about half of the world's supply. In 2016, Indonesia produced over 34.6 million metric tons of palm oil, and exported 25.1 million metric tons of it. Oil palm plantations stretch across at least 12 million hectares. There are several different types of plantations, including small, privately owned plantations, and larger, state-owned plantations. There are a variety of health, environmental, and societal impacts that result from the production of palm oil in Indonesia. A recent publication by the NGO Rainforest Action Network (RAN) indicates that the use of palm oil by some of the biggest chocolate and snacks' producers is increasing this problem.
Environmental issues in Sri Lanka include large-scale logging of forests and degradation of mangroves, coral reefs and soil. Air pollution and water pollution are challenges for Sri Lanka since both cause negative health impacts. Overfishing and insufficient waste management, especially in rural areas, leads to environmental pollution. Sri Lanka is also vulnerable to climate change impacts such as extreme weather events and sea level rise.
There are many pressing environmental issues in Mongolia that are detrimental to both human and environmental wellness. These problems have arisen in part due to natural factors, but increasingly because of human actions. One of these issues is climate change, which will be responsible for an increase in desertification, natural disasters, and land degradation. Another is deforestation, which is expanding due to human recklessness, pests, disease, and fires. Mongolian lands are becoming more arid through desertification, a process that is being exacerbated due to irresponsible land use. Additionally, more and more species are disappearing and at risk for extinction. Moreover, especially in population centers, Mongolians deal with air and water pollution caused by industrialization.
Forest cover is the amount of forest that covers a particular area of land. It may be measured as relative or absolute. Nearly a third of the world's land surface is covered with forest, with closed-canopy forest accounting for 4 - 5 billion hectares of land. Forests provide many ecosystem services that humans and animals cannot survive without, but anthropogenic actions and climate change are threatening global forest cover in potentially irreversible ways.
Environmental issues in Myanmar include air pollution, water pollution, deforestation, and issues relating to climate change. Myanmar is a country with a high percentage of forest covering and is said to have the most forest cover remaining in a Southeast Asia country. At the same time, it also has a rapid deforestation rate of over 2 percent of total forest area annually. Air pollution is another environmental concern for Myanmar. Data collected up to 2019 shows that 24,000 deaths of the annual toll of the country were caused by air pollution and particulate matter pollution in the country had caused moderate risks against human health. Myanmar people from both rural and urban areas face water pollution which is caused mainly by agriculture, mining activities and discharge of wastewater into water bodies without any treatment. Moreover, Myanmar has frequently experienced natural disasters that are the result of climate change. It also suffers from global warming which results in temperature rising and drought.
