麻豆传媒

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Just as urban communities feature a mosaic of cultures, an analysis of Baltimore soil revealed a mosaic of soil conditions. Urban soil has been presumed to be highly disturbed, but this study showed that typical urban soil isn't so typical"鈥漚nd isn't so disturbed"鈥漚fter all.

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Island countries with atolls, which are defined as ring-like coral islands and reefs that nearly or entirely encloses a lagoon use the shallow, fresh groundwater as the major source of drinking water. Sea-level rise due to increasing global temperatures and the incidences of water-borne diseases and associated infant mortalities are major concerns in many small island countries.

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It is estimated that between 9 and 13 million kilograms of antibiotics are used annually in the U.S. for raising livestock, with the majority being used for growth advancement and disease prevention purposes. Large amounts of antibiotics fed to livestock are excreted and end up in animal manure, which is commonly applied to agricultural land to provide crop nutrients. Therefore, food crops grown on manure-altered soils are exposed to antibiotics.

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Using sunn hemp as a cover crop can reduce the risk of groundwater contamination in Southern Florida.

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Scientists from around the world have begun to scratch the surface of the impact climate change has on water and soil below the earth's surface. Developing research has exposed the need for more information that will be vital to land and water management agencies and policy makers to better predict and respond to future climate shifts.

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Scientists in China have been attempting to answer corn producers concerns about precision agriculture, nitrogen fertilizer and their impacts on corn yield, grain quality, resource efficiency, profit, and contamination reduction.

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A renowned group of speakers, including Pedro Sanchez and Jeffrey Sachs, share the promise of fighting hunger in Africa through agricultural productivity at "The African Green Revolution Takes Shape,"聺 symposium on Nov. 6 in New Orleans as part of the American Society of Agronomy, Crop Science Society of America Annual Meetings.

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Two years after Hurricane Katrina devastated the Gulf Coast, soil scientists and conservation leaders are coming together to share lessons learned at a symposium on Nov.7-8 at the Ernest N. Morial Convention Center as part of the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America Annual Meetings.

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With forest fertilization up 800%, best management practices can minimize impacts on water quality, according to hydrologists at Stephen F. Austin State University who report the results of a intensive forestry-water quality study in the Journal of Environmental Quality.

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The February 2008 issue of Vadose Zone Journal includes a special section that presents recent research advances and applications of Ground Penetrating Radar (GPR) in hydrology, geology, and physics. GPR technology has rapidly developed over the last decade and can be used to meet the needs of a growing population and increasing pressures on the environment.