Publication Date:
2021-05-19
Description:
Proposed land area within the Environmental impact assessment study boundary is designated for development
of warm-water fish culture and located at "49 '55 ° 54 to" 14 '56 ° 54 east longitude, and "7 '15 37 to" 48 '19 37
north latitude, in the Gonbad Kavous county of Golestan province. Currently in Digcheh there are 47 earthen
ponds with different dimensions comprising some 380 ha project's overal footprint with an estimated 324ha
net area of production ponds, which involves common carp and chinese carp fish farming. Fresh water supply
is provided from Gorgan-Roud to the culture ponds by pumping via some mobile pump through a common
earthen channel which is shared with agriculture lands of the rural community. Environmental impact assessment
studies for the project which in terms of design features, subject to article 2, paragraph (e) of Environmental
impact assessment regulation is necessary in order to resolve problems related to water supply , optimization of
fish farm's hydraulic systems through the construction of concrete main intake channel and optimization and
renewal of pond's weir and outlet structure, intake and drainage channels of production ponds, and also
renovation of water pumping systems wich will be resulting in increased farmed fish production and decreased
production costs. For optimization of EIA study and achievements to update information by using Geographic
Information System(GIS) software, the maps of the study area were provided with scrutiny. Thus, in first step
digital map with a scale of 1:500 to1:2000 in AUTO CAD format that shows the project location, prepared with
land surveying. Layers of required maps based on Iran Army Geographical Organization base maps for site with
conceptual and spatial information of location were provided. General location map of the region, residential
areas and villages, roads and other maps needed in studies us ing these layers were produced. Next, the paper
output for Cartography maps were prepared using ARC GIS software. The spatial layers with the help of GIS
spatial analysis studies by different expert teams of EIA studies (soil and water pollution , social, economic and
cultural studies, biological environment, climate and hydrology) , were performed. The output of digital spatial
data, spatial analysis and Cartography as various maps, tables or diagrams and graphical analysis were used in
various discipline reports. Since implementing the project can be create different and various changes or effects
on environment resources (physical, biological, social, economic and cultural) ,thus knowing how these impacts
occur will be assist to prevent or reduce their pursuant negative effects the environment impact assessment
studies carried out. In order to conduct decision-making process between action and no action alternatives for
perform Digcheh Aquaculture project the Leopold matrix and comparison checklist method has been used. The
results of the Leopold matrix shows that the action of Project with environmental mitigation measures (+412) is
superior to no action Project (-79). Obviously, the modernization and Optimization of Digcheh warm-water fish
farming development project have some adverse effects on the environment like other development projects but
it seems with considering mitigation measures and performing Environmental Management Plans with regard to
positive outcomes for local area, implementation of this project will be provide a lot of positive or favorable
outcome for indigenous peoples and fish farmers. As well as with implemention of the Digcheh project problems
such as the loss of water in earthen channels, the overall status of fish farming practices, migration from rural to
urban areas , lack of employment and consequently low level of income and welfare of the people will be
improved and acquire positive trend in the region Consequently in the EIA study final findings, the
implementation of Dighcheh fish culture development project is recommended and emphasized.
Description:
Iranian Fisheries Science Research Institute
Description:
Published
Keywords:
Physical
;
Biological
;
Social
;
Cultural
;
Environmental impact assessment
;
Warm Water
;
Fish culture
;
Environmental
Repository Name:
AquaDocs
Type:
Report
,
Refereed
Format:
220pp.
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