what are the four main causes of land degradation?
432288
['Deforestation: Forests play an important role in maintaining fertility of soil by shedding their leaves which contain many nutrients. ... ', 'Excessive Use of Fertilizers and Pesticides: ... ', 'Overgrazing: ... ', 'Salination: ... ', 'Water-logging: ... ', 'Desertification: ... ', 'Soil erosion: ... ', 'Wasteland:']
1312453
These national environmental issues are: Pollution (air, water and soil) Degradation of natural resources such as soil erosion, deforestation, depletion of wildlife, shortage of energy, degradation of marine ecosystems and depletion of mineral resources.
1446158
['Air Pollution. Air pollution is a mixture of solid particles and gases in the air. ... ', 'Water Pollution. We all need clean water. ... ', 'Soil and Land Pollution.', 'Climate Change. Climate is the average weather in a place over a period of time. ... ', 'Global Warming. ... ', 'Deforestation. ... ', 'Increased Carbon Footprint. ... ', 'Genetic Modification.']
110821
['Global Warming.', 'Climate Change.', 'Acid Rain.', 'Smog effect.', 'Deterioration of fields.', 'Extinction of animal species.', 'Respiratory health problems.', 'Deterioration in building materials.']
620508
['Overconsumption – situation where resource use has outpaced the sustainable capacity of the ecosystem. ... ', 'Overpopulation – too many people for the planet to sustain.', 'Acid rain.', 'Biodiversity loss.', 'Deforestation.', 'Desertification.', 'Global warming/climate change.', 'Habitat destruction.']
1232345
['Climate change including Global warming.', 'Acid rain, photochemical smog and other forms of pollution.', 'Ocean acidification.', 'Displacement/extinction of wildlife.', 'Resource depletion - forests, water, food.', 'and more.']
748749
For all the fertility losses there are various causes in the different regions of the country, in totality the major causes to soil fertility decline is a land degradation which is caused through the different agents such as soil erosion, deforestation, overgrazing, sedimentation, continuous farming and pollution.
702240
['Rain Drop or Splash Erosion. ... ', 'Sheet Erosion. ... ', 'Rill Erosion. ... ', 'Gully Erosion. ... ', 'Stream Bank Erosion. ... ', 'Due to Soil Texture. ... ', 'Slope. ... ', 'Intensity or Amount of Rainfall.']
368234
['Groundwater depletion most commonly occurs because of the frequent pumping of water from the ground. ... ', 'We continuously pump groundwater from aquifers and it does not have enough time to replenish itself. ... ', 'Agricultural needs require a large amount of groundwater.']
438392
There are five major causes of extinction: habitat loss, an introduced species, pollution, population growth, and overconsumption. Through the activity, students will create a list of reasons why animals can become extinct.
1451706
Soil erosion occurs naturally by wind or harsh climatic conditions but human activities include overgrazing, overcropping and deforestation.
1347426
Identify four basic causes of the environmental problems that we face. population growth, wasteful and unstainable resource, poverty, and failure to include the harmful environmental cost of goods and services in their market prices.
976709
Some suggested that rapidly growing population not only increases pressure on marginal lands, over-exploitation of soils, overgrazing, over cutting of wood, soil erosion, silting, flooding but also increases excess use of pesticides, fertilizers, causing land degradation and water pollution (Khan et al., 2009).
518637
['Global warming.', "Natural activities in the earth's crust.", 'Tectonic movement.', 'Moon activity.', 'Mining.', 'Deforestation.', 'Soil erosion.', 'Seismic activity.']
940973
['Agricultural Land Pollution. We use a lot of fertilizers as well as pesticides, fungicides, and insecticides on our agricultural land in a bid to maximize yields. ... ', 'Non-biodegradable Solid Waste. ... ', 'Industrial Waste. ... ', 'Deforestation. ... ', 'Mining.']
346055
[' Sheet erosion by water;', ' Wind erosion;', ' Rill erosion – happens with heavy rains and usually creates smalls rills over hillsides;', ' Gully erosion – when water runoff removes soil along drainage lines.', ' Ephemeral erosion that occurs in natural depressions.']
659981
['energy flow and nutrient cycles ( photosynthesis , food webs, decomposition webs)', 'sediment transport and soil formation.', 'the water cycle.', 'reproduction/ regeneration mechanisms.', 'natural disturbances (fires, floods, storms)', 'succession.']