Record Details

Assessment of changes in Kolleru lake in Andhra Pradesh due to the development of aquaculture using satellite data.

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Assessment of changes in Kolleru lake in Andhra Pradesh due to the development of aquaculture using satellite data.
Not Available
 
Creator M. Jayanthi
P. Nila Rekha
 
Subject Aquaculture
Kolleru
Freshwater lake
GIS
Satellite data
GPS
 
Description Not Available
Aquaculture is one of the fastest growing food indus tries and the rapid growth of aquaculture worldwide
has resulted in growing concerns about its impact on
important ecosystems. Kolleru Lake, India’s largest
fresh water body, and Ramsar site have undergone
tremendous changes due to the development of aqua culture. To assess the impact of aquaculture on Kol leru, satellite data were found appropriate because of
the synoptic-detailed overview and accuracy. Satel lite data of IRS 1D, LISS III from 2004 and Survey of
India topographic maps from 1967 were processed
using image processing techniques in ERDAS IMAGINE
and analysed in Geographical Information System
(GIS) such as ARC GIS 9.1. Land use map prepared from
the satellite data was veri¢ed in the ¢eld using Global
Positioning System to check the land and water use
classes and its areal extent. It was estimated from
the topographic maps of 1967 that the total lake
boundary area was 180.38 km2
, in which 70.70 km2
had water throughout the year and 100.97 km2 had
water during the rainy season. The digital image pro cessing of 2004 satellite data revealed that Kolleru
was no longer a lake and the lake area of 62.65 km2
(34.73%) only remained in a degraded state, exten sively colonized by macrophytes. The total loss of lake
area was 109.02 km2 between 1967 and 2004, in
which aquaculture was developed in 99.74 km2
,
which represented 55.3% of the 1967 lake area. The
maximum conversion to aquaculture occurred from
the lake liable to be inundated during the 1967 rainy
season. The area under agriculture was 16.62 km2 in
2004, the increase in lake area for agriculture be tween1967 and 2004 being 8.22 km2 (4.55% of lake).
If human induced degradation is allowed to con tinue, the lake will very soon disappear. Now, the Government of Andhra Pradesh, India, has initiated
schemes and laws to restore the lake to its pre-devel opment state. Lessons learnt from the Kolleru Lake
cautioned that there is a need for regular monitoring
of important water resources throughout the world
to protect the biodiversity of the earth.
Not Available
 
Date 2023-08-02T06:34:50Z
2023-08-02T06:34:50Z
2007-01-10
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/80390
 
Language English
 
Relation Not Available;
 
Publisher Not Available