ecology-ecosystem-microbial-ecology-2019-keynote

3 / 3

20
conferenceseries LLC Ltd
3rd International Conference on
3rd International Conference on
Ecology, Ecosystem and Conservation Biology
Microbial Ecology & Eco Systems
&
March 18-19, 2019 | Chicago, USA
Find More Information @ MARCH 2019 Conference Series LLC Ltd
Restoration in
northern Lake Gehu:
A eutrophic lake in
China
L ake Gehu is a severely
eutrophic lake in
southeast China. A series
of restoration measures
have been implemented
since 2009 in northern
Lake Gehu. This study
compared aquatic plants,
water quality, sediment,
and phytoplankton between
restoration and control areas
to investigate the effect of
restoration measures. The
results demonstrated that
aquatic macrophyte coverage
increased from 0% to 10.6%;
mean TP, TN, and CODMn
concentrations increased by
50.0%, 42.4 %, and 40.8%,
respectively, compared with
those before the measures
were carried out; the mean
Secchi depth (SD) increased
to 42.5cm, which is 1.4 times
higher than that before
Jizheng Pan
Nanjing Institute of Geography and
Limnology, China
restoration; the mean
euphotic depth (Zeu) in the
summer increased from 91
to 130cm; the mean chl.a
concentration decreased from
34.8 to 20.2µg•L-1, compared
with that before restoration;
the Shannon–Wiener index of
phytoplankton increased by
28.7%. The mean TP and TN
concentrations in sediments
decreased by 63.8%
and 52.4%, respectively,
compared with that before
dredging. These results
indicate that the restoration
in northern Lake Gehu was
effective. To complete the
transformation from an algae-
to a macrophyte-stable state
within the region, further
measures must be adopted.
This restoration of a eutrophic
lake can serve as a reference
for similar eutrophic lakes.
Biography
Jizheng Pan has more than
20 years experience in
ecological restoration and
constructed wetland. He is
accomplished in the research
on technology of ecological
restoration in eutrophic lakes
and treatment wastewater
by constructed wetland with
artificial aeration. He is skilful
in ecological research of lakes.
He is good at the pollution
control and ecological
restoration of lakes.
JOURNAL OF ECOSYSTEM& ECOGRAPHY 2019, VOLUME 9 | DOI: 10.4172/2157-7625-C1-043 KEYNOTE FORUM | DAY 1