Search results
Results from the WOW.Com Content Network
Although desertification has been curbed in some areas, it is still expanding at a rate of more than 67 km 2 every year. 90% of China's desertification occurs in the west of the country. [27] Approximately 30% of China's surface area is desert. China's rapid industrialization could cause this area to drastically increase.
China conducted a large-scale soil quality sampling analysis nationwide from 2005 to 2013, [83] and according to the National Soil Pollution Survey Bulletin promulgated by the Ministry of Environmental Protection of China in 2014, the total national soil exceedance rate (the percentage that exceeds the upper limit value) was 16.1%, of which ...
Desertification is a gradual process of increased soil aridity.Desertification has been defined in the text of the United Nations Convention to Combat Desertification (UNCCD) as "land degradation in arid, semi-arid and dry sub-humid regions resulting from various factors, including climatic variations and human activities."
The main cause of China dust is desertification of northern China, Mongolia, and Central Asia. Desertification in these regions owe to extensive logging in the forests and extensive harvesting of arable land. The origins of Asian dust are mostly located in developing countries; thus, most of these countries are undergoing rapid population growth.
As of 2009, China's planted forest covered more than 500,000 square kilometers (increasing tree cover from 12% to 18%) – the largest artificial forest in the world. [11] In 2008, winter storms destroyed 10% of the new forest stock, causing the World Bank to advise China to focus more on quality rather than quantity in its stock species.
However, even as the world's no. 2 corn producer harvested a record 288.84 million metric tons last year, imports surged to a near-record 27.1 million tons, driven by traders' preference for corn ...
Grassland in Europe. Grassland degradation, also called vegetation or steppe degradation, is a biotic disturbance in which grass struggles to grow or can no longer exist on a piece of land due to causes such as overgrazing, burrowing of small mammals, and climate change. [1]
A satellite image of the Sahara, the world's largest hot desert and third largest desert after Antarctica and the Arctic. Desert greening is the process of afforestation or revegetation of deserts for ecological restoration (biodiversity), sustainable farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life.