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Title
Proceedings of the Symposium on Global and Environmental Monitoring

751
3').The dusty pollution has been a obviously pollu
tion at present.And because of the background of
meteorology in 2000 maybe have a bad effact on
dusty pollution.it becomes a hard work to change
the status quo of dusty pollution completely
in 2000.
4).The acid rain is most sulfate pollution at pre
sent, in China. The nitrate radical level account
for a low proportion. With the heavier S02 and
NOx pollution.the action of nitrate will be more
conspicuous than present. But it still can't
change the pollution of sulfate type precipita
tion. It will probably take further steps on acid
rain. But because we still have limited knowle
dges of acid rain, we should act with caution to
detect the tendency of acid rain and intensify
the monitoring with remote sensing technique on
acid rain.
5. THE PRESENT SITUATION AND THE FATURE
OF CHINA AIR QUALITY MONITORING
The environmental meeting which was convened by the
U.N. in 1972 in Stockholm pushed the China environ
ment protection work forward. In 1973, the first
meeting of environmental protection convened, it
begun on environment monitoring of China.After 1973,
environmental monitoring stations were set up in
many cities,these stations unfolded some monitoring
jobs on air quality,water quality and noise etc..By
the year of 1989, we have about 30,000 personnel in
the field of monitoring, and 1,800 stations in dif
ferent grade. Especially in 1980s, the professional
contigent in monitoring field had increased from
10,000 persons in the year 1980 to 30,000 persons
in the year of 1989.To calculate the time according
to the earliest air quality monitoring station,
seventeen years had undergone till 1989. China Na
tional Environmental Monitaring Centre! CNEMC ) was
set up in 1980, after that four grade monitoring
network in China came into being which take CNEMC
as the key link.
In the late years of 1980s, more than seventy
stations in the nation-network which representive
different kinds of cities and type of air pollution
were selected, and their air environmental monitor
ing results are the basic to reflect the situation
of China urban air quality.
In order to get in the reliable monitoring data the
unite technical specification of nation-network was
worked out so the comparable monitoring results in
different cities was strengthened. The technical
specification unified the technical requirement and
the quality control in different steps, and
strengthened the unity and representation of sampl
ing, also the idea of the quality control on every
processing.
We have great progress in monitoring technology,
too. from 1970s to 1980s, the whole country's urban
air quality monitoring basically use the way of
sample by hand : four times each day, 5-7 days each
season. We can call this period as hand-sampling
age. In the last years of 1980s, the technical spe
cification stipulates that the stations in nation-
network must, use the way of 24 hours continuous
auto-sampling and analysis in laboratory. Now this
method has come into use in some cities. In 1980s,
air auto-monitoring systems were set up in some
cities.All of these laid a faundation for the auto-
sampling way of air quality monitoring. So we can
say that the years of 1990s will be the era of
auto-samp 1ing.
Remote sensing technique has been used in the
respect of environment, especially in the respect
of water quality, resources, biological systems.The
remote sensing technique has shown a great upper
hand in the respect, of environmental observe and
management,and it accumulate a great potentialities.
In 1980s, China has begun to use sound radar remote
sensing technique on observing the structure of
lower atmosphere etc.. We should try to use the
remote sensing technique on observing 03 in 1990s.
We believe that with the development of economy and
technology, the remote sensing technique in air
quality monitoring will has a great development in
China and it will become the main way of air qua
lity monitoring. So we can predict that the years
of 2000s will be the era of remote sensing monitor
ing in environmental monitoring.
Acknowledgements
The author is deeply grateful to professor Z.Y.WU
and professor Z.F.CHENG, for their valuable advice.
Thanks are also due to Mrs.X.L.LIU and Mr.S.X.HONG
for providing their research report, and thanks
Mr.Q,Y.LIU, Mr.X.W.WANG and Mrs.W.LIU, CEPA, for
providing data. This paper was supported by
Mrs.H.H.LIU, Mrs.Y.F.LIN, Mr.S.LI, Mr.Y.D.ZHU and
Mr.T.Z.QIAN.
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