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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 ...
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.
Download as PDF; Printable version; In other projects ... Help. Pages in category "Soil erosion" The following 27 pages are in this category, out of 27 total. ...
This has accelerated sea erosion, salt water intrusion and land degradation. Anthropogenic fires, particularly in savanna forests and grasslands, have led to the systematic degradation of forest habitats facilitating the spread of invasive species and consequently affecting natural regeneration of native species.
[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 ...
As the weathered bedrock turns to soil, there is a greater elevation difference between the soil level and the hard bedrock. With the introduction of water and the thick soil, there is less cohesion and the soil flows out in a landslide. With every landslide more bedrock is scoured out and the hollow becomes deeper.
At roadsides and waterways the tree provides a good windbarrier and protection from water-driven soil erosion. [2] ... (PDF) on 16 March 2014; External links ...
It is also found in Sri Lanka, where it is called blue mist, kora-kaha (Sinhala language) and kurrikaya (Tamil language). The leaves contain a yellow dye, a glucoside, which is used for dyeing the robes of Buddhist monks and for colouring reed mats (Dumbara mats). Medicinally, the leaves are said to have anti-diarrhoeal properties. [2]