نتایج جستجو برای: sand mining
تعداد نتایج: 114337 فیلتر نتایج به سال:
Determination of the pre-mining geochemical baseline in bed sediments and the paleoecology in a watershed impacted by historical mining activity is of utmost importance in establishing watershed restoration goals. We have approached this problem in the Animas River watershed using geomorphologic mapping methods to identify old pre-mining sediments. A systematic evaluation of possible sites resu...
Changes in natural resources have presented major problems for farming communities rural areas. In general, farmers diversify their livelihoods the non-agricultural sector without paying attention to impact on availability of future. Sand mining activity has become one short-term solutions As a result, problem such as land degradation occurs village, thereby generating negative impacts nature n...
Abstract Water quality and zooplankton assessment of a rural river in Southeast Nigeria was carried out between May 2019 October three stations relation to anthropogenic activities. The major activity the indiscriminate sand mining. water samples were collected analyzed using standard sampling analytical procedures while filtration method. pH dissolved oxygen values lower than acceptable limits...
The lack of law enforcement related to marine sand mining activities, which is not in line with the community Lampung Province, certainly causes many problems. It can cause quite a high social conflict and environmental ecosystems as well ecological disasters. In addition, impact sea permit also overlaps allocation coastal areas small islands. This article aims analyze against activities that P...
Whereas the geomorphic effects of in-channel mining have been widely documented, very few studies focused on recovery trajectories after ended. This paper describes and quantifies channel adjustment extended over-widened pits located in a low energy gravel-bed river, identifies factors that control their rate. The study was based aerial photographs LiDAR analysis, grain-size sampling, bedload c...
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