9.7 Conclusions
The riparian vegetation is turning as one of the natural means of maintaining the river
water quality with recently their importance being more emphasised over technical
solutions of combating river pollution. The word “riparian” and the suffixes used
with it have been associated with the inherent variability. The literature suggests the
inherent variability in definitions of the word “riparian” and the suffixes used. The
definition of the term and its usage have evolved from legal to scientific, with each
branch of science defining it in its own way. The author suggests that the definition
given by Ilhardt et al. (2000) is more complete and should be universally used
henceforth; further, the most appropriate suffix to explain the functionality of
riparian areas is “ecotone,” given by Ilhardt et al. (2000).
These areas are to be looked as of utmost importance because of their important
role in maintaining the fluvial landscape. The researchers have emphasised over their
role in stabilising the riverbank, in filtering the pollutants, in regulating the river flow
and groundwater recharge and also for maintaining the river ecosystem. These
functions of riparian ecotone are dependent on the type of vegetation harbouring
the riverbank. Most of the researches have been done to see the effectiveness of grass
and forest riparian ecotone with sediments, nitrate and phosphorus as pollutants. The
literature suggests a few studies from India being cited in the context of laying the
importance of riparian ecotone, thus requiring directives to research the Indian river
from riparian ecotone perspective and including it in river management plans.
Acknowledgements The authors are thankful to the Council of Scientific and Industrial Research,
New Delhi, for financial support in the form of research associateship. We also acknowledge
Mr. Rahul Kumar, design lead, Defcon group Dehradun, for designing Figs. 9.1 and 9.2. The
director, Indian Institute of Remote Sensing, ISRO Dehradun, is also acknowledged for his support
and encouragement.
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