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Tree plantation such as tea and rubber plantation cause low rates of soil erosion. Higher rates of soil erosion are caused by crops which are harvested annually like potatoes, most vegetables and tobacco. [11] Soil degradation in the dry zone leads to desertification. The loss of soil also is a big problem near watersheds, because a lot of ...
The Civil War in Sri Lanka arose from ethnic tensions between the Sinhala people and the Tamil minority. The Liberation Tigers of Tamil Eelam also known LTTE stopped cutting trees in the areas they occupied because the trees provided them with leaves that allowed them to practice guerilla warfare. In response, the opposition - the national ...
According to the U.N. FAO, 28.8% of Sri Lanka was forested in 2010 (about 1,86 million hectares). In 1995, it was 1.94 million hectares or 32.2% [11] of the land area that was classified as dense forests while the balance 0.47 million hectares or 7% the land area classified as open forests.
Sinhala: Muhudu Bimthamburu, English: Beach Morning Glory, Tamil: Atampu (Ipomoea pes-caprae) Sinhala: Maha rawana revula , Tamil: Ravannan meesai ( Spinifex littoreus ) The vegetation gradually become stable a distance away from the tide mark, with the stabilization of the soil.
[34] [35] There is growing evidence that tillage erosion is a major soil erosion process in agricultural lands, surpassing water and wind erosion in many fields all around the world, especially on sloping and hilly lands [36] [37] [38] A signature spatial pattern of soil erosion shown in many water erosion handbooks and pamphlets, the eroded ...
Potato field with soil erosion. In addition to the usual types of land degradation that have been known for centuries (water, wind and mechanical erosion, physical, chemical and biological degradation), four other types have emerged in the last 50 years: [11] pollution, often chemical, due to agricultural, industrial, mining or commercial ...
For example, in the Great Plains, it is estimated that soil loss due to wind erosion can be as much as 6100 times greater in drought years than in wet years. [ 80 ] Loess is a homogeneous, typically nonstratified, porous, friable , slightly coherent, often calcareous, fine-grained, silty , pale yellow or buff, windblown ( Aeolian ) sediment ...
Eroded hilltops due to tillage erosion. Tillage erosion is a form of soil erosion occurring in cultivated fields due to the movement of soil by tillage. [1] [2] There is growing evidence that tillage erosion is a major soil erosion process in agricultural lands, surpassing water and wind erosion in many fields all around the world, especially on sloping and hilly lands [3] [4] [5] A signature ...