In the first class, Dr Kibert talks about the depletion of
resource and many concepts of sustainable vocabulary. The one of the main theme in that class is global
warm and the negative influence it brings up. As he said that, the sea level
will become higher than present with the continuing global warm in the future.
Then, the overall land would be less than less. I have a question here, view
from the opposite aspect, have all the land on the earth been used thoroughly? Absolutely
not, why? To further investigate this question, let us analyze the land the
other conditions that suitable for grains and green food to grow. Yes, though
different style of plant may relatively ask for different amount of sunshine,
water, and nutrients. But overall, for common grains and green food, the fertilized
and low attitude plain would be the idea place to grow. Seldom can we see the
grains and food growing on the high mountains and plateau. That’s to say,
actually a large area of land has not been used and explored yet, because of
the high altitude and low temperature. As
we know, six degree decreases in temperature when 1000km arise in vertical
direction. Now come to our problem, if the global warm continuing in the
future, and accompanied by the increase of the sea level, does that mean more and
more high level places are changing into low altitude places and more probable
to grow and supply more food to us? Further looking at it, it is highly
possible that the added arable land can balance the lost due to the sea level
arise. So, the pressure in a short period can be relieved by reclamation.
Nowadays, the high price of the food shows the food supply
cannot meet the demand. Besides the reason that keeping growing population, the
efficiency of the arable land use also attribute to it. In developed countries,
government set some goals for the alternative energy source, such as biofuels.
So, a portion of arable land used to plant biofuels. How to balance the land to
grow for food or for biofuels is very important.
Some people may argue that there’ll be one day in the future
that the whole land almost sinks in the sea. The future is unknown, many
factors have impact on it, what we do is to slow down the speed of the collapse
of the environment system, during which to find a better way to improve it. All
the analysis above is based on the hypothesis that the global warming is caused
by the emission of co2. Generally speaking, it does put relative percentage
of impact on the global warming, according to some findings that recent year’s
global warming is partly because of the normal temperature fluctuation in planet.
The basic problem in
this planet is the large population. The other problems such as food crisis,
resource exhausted, Ozone hole, acid raindrop, can be finally dealt with by
removing the radical problem- population- to give back the self-re-heal. Optimistically,
the population increasing rate is slow down than before and some countries even
have the negative rate.
Poverty has become one of global hotspot issues. Many
reasons could be found to it, which shows as individuals and groups poverty.
Some poverty may arise from the history and some poverty may be caused by the
deficiency of the facilities in education and so on. But I think too much
resources and money are donated to poverty rebels and deviates the nature
development process. Not only is applied in species, the natural selection that
proposed by Charles Robert Darwin,
but human beings society forming, developing, and collapsing. It is said that
human beings intelligence level is getting lower than before. Sometimes, we
face a lot of paradox and conflicts between ethics and interest. How to make a
decision is too hard. If something is benefit for future generation but may not
performance well in present ethnic. On one hand, we look for the future for the
benefit of human and society; on the other hand, we survive present people who
live in poverty by sacrificing and wasting numerous limited resources to those
who contribute little for the whole human beings? We try to save them, but
actually, maybe destroy our whole human beings in overall, viewing it from a
longer time, past and future. Society is a large integrated and self-adjusted
system, in this system, if put too much human willing power to modify, it disorders
and may even retards society’s health development.
