All human activity in managing nature have a positive impact on meeting the needs and welfare of human life derived from nature, but sometimes other things also often occur simultaneously or in the future is a negative impact on the utilization of nature. One of them is mining activity which may result in the destruction of nature, because the waste is not managed well.
Based on USDA research, about millions of hectares of land area abandoned after exploitation has been damaged and arid conditions, Moreover mineral mining sites such as lead and zinc will be contaminated acid, "tailing" (sand leftover mines called "chat") and other toxic materials.
This problem if left continuously would also be a negative impact on human life, but to avoid this harm the United States Department of Agriculture (USDA) find new ways to reduce the damage caused by the mine. This way is to use compost derived from animal waste and closing of land damaged by mining with compost, so the balance of elements and nutrients on the land can be restored.
The researchers gave the compost with composition up to 0.5 tonnes per km2 in some former mining site which is then planted with grass, and then took soil samples five times in two years of research to find out the nutritional content. And the results of plants in an area with a high content of compost have increased content of pH, phosphorus, nitrogen, carbon and water, besides it also increased the content of microbial biomass and enzyme activity and potential ammonia oxidation.
Based on USDA research, about millions of hectares of land area abandoned after exploitation has been damaged and arid conditions, Moreover mineral mining sites such as lead and zinc will be contaminated acid, "tailing" (sand leftover mines called "chat") and other toxic materials.
This problem if left continuously would also be a negative impact on human life, but to avoid this harm the United States Department of Agriculture (USDA) find new ways to reduce the damage caused by the mine. This way is to use compost derived from animal waste and closing of land damaged by mining with compost, so the balance of elements and nutrients on the land can be restored.
The researchers gave the compost with composition up to 0.5 tonnes per km2 in some former mining site which is then planted with grass, and then took soil samples five times in two years of research to find out the nutritional content. And the results of plants in an area with a high content of compost have increased content of pH, phosphorus, nitrogen, carbon and water, besides it also increased the content of microbial biomass and enzyme activity and potential ammonia oxidation.
Essentially compost in high concentrations, can reduce the content of lead and zinc by 90%, so it also can reduce the risk of pollution of waterways, even compost could also strengthens the plant and minimize erosion. It's certainly very interesting, because compost are known to be very smelly and is commonly used as fertilizer, was also able to restore land damaged by mining, so these lands will also be re-productive if used.
(source http://www.ars.usda.gov/is/pr/2012/121026.htm )
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