LAQIAO is a tiny village in the karstic mountains of Libo. Its 96 Shui residents in their community of 20 households decided, in 2002,to take part in an environmental protection program. This was a welcome decision,...LAQIAO is a tiny village in the karstic mountains of Libo. Its 96 Shui residents in their community of 20 households decided, in 2002,to take part in an environmental protection program. This was a welcome decision, in view of the ecological significance of the swamps and karst forests in the Maolan Nature Reserve of Libo.展开更多
The right to life is the essential and most important of all human rights. For an individual, it constitutes the prerequisite for the enjoyment of all other rights to which he or she is entitled. In 2005, the Chinese ...The right to life is the essential and most important of all human rights. For an individual, it constitutes the prerequisite for the enjoyment of all other rights to which he or she is entitled. In 2005, the Chinese authorities planned a series of legal measures to provide still more effective protection of the right to life.展开更多
The Royal Military College of Canada, located on the north eastern shore of Lake Ontario, possesses an abundance of copper roofs and lacks surface water treatment prior to discharge into Lake Ontario. Rainwater, roof ...The Royal Military College of Canada, located on the north eastern shore of Lake Ontario, possesses an abundance of copper roofs and lacks surface water treatment prior to discharge into Lake Ontario. Rainwater, roof runoff and soil samples were collected and analyzed for copper and other parameters. Copper was consistently detected in runoff samples with average concentrations of 3200 ± 2100 μg/L. Multivariable linear regression analysis for a dependant copper runoff concentration yielded an adjusted R 2 value of 0.611, based on an independent variable model using minimum temperature, maximum temperature, total precipitation, and wind speed. Lake water samples taken in the vicinity of storm water outfalls draining areas with copper roofs ranged from 2.0 to 40 μg/L copper. Such data exceed the 2.0 μg/L Canadian Water Quality Guidelines for the Protection of Aquatic Life as outlined by the Canadian Council of Ministers of the Environment （CCME）. Analysis of raw, filtered and digested forms suggested that the majority of copper present in runoff and lake water samples was in a dissolved form. The majority of soils taken in this study displayed copper concentrations below the 63 μg/g CCME residential/parkland land use limits. These findings suggested that ion exchange processes between runoff water and soil do not occur to a sufficient extent to elevate copper levels in soil. It may therefore be concluded that the eventual fate of copper, which is not discharged via storm water outfalls, is lost to the water table and Lake Ontario through the sub-soil.展开更多
文摘LAQIAO is a tiny village in the karstic mountains of Libo. Its 96 Shui residents in their community of 20 households decided, in 2002,to take part in an environmental protection program. This was a welcome decision, in view of the ecological significance of the swamps and karst forests in the Maolan Nature Reserve of Libo.
文摘The right to life is the essential and most important of all human rights. For an individual, it constitutes the prerequisite for the enjoyment of all other rights to which he or she is entitled. In 2005, the Chinese authorities planned a series of legal measures to provide still more effective protection of the right to life.
文摘The Royal Military College of Canada, located on the north eastern shore of Lake Ontario, possesses an abundance of copper roofs and lacks surface water treatment prior to discharge into Lake Ontario. Rainwater, roof runoff and soil samples were collected and analyzed for copper and other parameters. Copper was consistently detected in runoff samples with average concentrations of 3200 ± 2100 μg/L. Multivariable linear regression analysis for a dependant copper runoff concentration yielded an adjusted R 2 value of 0.611, based on an independent variable model using minimum temperature, maximum temperature, total precipitation, and wind speed. Lake water samples taken in the vicinity of storm water outfalls draining areas with copper roofs ranged from 2.0 to 40 μg/L copper. Such data exceed the 2.0 μg/L Canadian Water Quality Guidelines for the Protection of Aquatic Life as outlined by the Canadian Council of Ministers of the Environment （CCME）. Analysis of raw, filtered and digested forms suggested that the majority of copper present in runoff and lake water samples was in a dissolved form. The majority of soils taken in this study displayed copper concentrations below the 63 μg/g CCME residential/parkland land use limits. These findings suggested that ion exchange processes between runoff water and soil do not occur to a sufficient extent to elevate copper levels in soil. It may therefore be concluded that the eventual fate of copper, which is not discharged via storm water outfalls, is lost to the water table and Lake Ontario through the sub-soil.
