
In New Gas Wells, More Drilling Chemicals Remain Underground
anthropogenic- effects, processes or materials are those that are derived from human activities
defoliation- To cause the leaves of (a plant, tree, or forest) to fall off, especially by the use of chemicals
mitigation- requires reducing the intensity of radiative forcing in order to reduce global warming
attenuate- the gradual loss of intensity of any kind of flux through a medium
Both readings talk about the rising concern of acid rain. Although one discussed it occurring in China and the other in the Adirondacks, they both have the same ideas. Sulfur (SO2) emissions are a huge contributor, and because of the many cars in China, the amount is rapidly increasing. There are high concentrations of SO2 in the air there, but steps have been taken to reduce it. For instance, there have been restrictions put on using coal in homes and the relocation of industries from urban areas to the countryside. "These measures have reduced air pollution and lessened health effects considerably, although there still is a long way to go."
Main Contributors
China- cars, heavily polluting industries
Adirondack region- "Natural acidity originating in the terrestrial ecosystem often complicates the assessment of acidic deposition effects on stream chemistry. Decay of plant material in the soil produces dissolved organic compound that is inherently acidic."
pH
China-pH-
"In China, national monitoring programs generally focus on urban air quality and precipitation pH."
"The considerable deposition of NH+4, with its potential to contribute to acidification, implies that pH alone is not a good indicator of acid rain."
Impacts of Acid Rain
Adirondack region- fish die, vegetation damaged, too acidic to support wildlife.
".. are not strongly influenced by deep soil flow paths tend to have h is BCS percentage is consistent with the finding that 31% of streams averaged for all surveys had a concentration of inorganic Al > 2.0 μmol L, the level above which is toxic to brook trout, a relatively acid tolerant fish species."
China- Severe forest damage
-"Forest decline has occurred in some areas of China because of the direct effects of SO2, extremely acidic mist or rain events, and other pollutants."
-defoliation of masson pines and high tree mortality. However, insect attacks also play into this, so it's hard to tell what exactly is from the acid rain.
-Aluminum concentrations above what is considered toxic for tree root.
Focus of the Research
China- Finding how to reduce the sulfur emissions
Adirondack region- How the acid rain effects streams.
What Has Been Done to Improve the Problem?
China- The population is growing, so more electricity is needed. New coal-fired plants will be built in the poorer areas of China.
-"The results strongly suggest that considerable reduction in the emission of sulfur is needed to avoid the harmful effects from acidification in the future."
flat emission reduction goal of 20% from 1995 to 2010
-"To find the best options, all important effects- natural environment, human health, and climate- must be considered."
-More studies need to be conducted.
Adirondack region-
Solutions
There really are no immediate solutions to this problem anywhere. What we need to do is cut back on sulfur emissions and help repair the wildlife and ecosystems we've destroyed.
My Questions
1. Is there even anything we can do to help repair those ecosystems?
2. It's great to say that China needs more monitoring of the "environmental situation," but is that going to happen? Are there currently any studies going on?
3. Why isn't there acid rain everywhere when sulfur emissions occur all over the world?