ABSTRACT
The study was carried out taking soil samples from civil construction sites at polder 35/1 in Sharankhola
upazila of the Bagerhat district during the period of February to June 2018. The Polder 35/1 is closest to the
Sundarban and located in Sharankhola and Morelganj upazilas under Bagerhat District. A total of 15 soil
samples were collected from five selected areas of polder 35/1, where dike upgrading works are being carried
out. Three samples from every place and mixed together. Five composite samples were finally prepared. The
collected soil samples (collected in 0-15 cm depth) processed for laboratory for determining their chemical
properties according to standard method from Consultancy Research & Testing Services (CRTS), Khulna
University of Engineering & Technology (KUET), Khulna-9203. The results obtained from this study
showed that the N content of the soil was very low. The available P and K in the soil of the soil varied from
1.10-3.82 μg/g and 0.02 to 0.30 meq/100 g of soil, respectively. The available S varies greatly from location
to location and ranged from 117 to 273 μg/g. i.e. very high level S was detected in all cases. This was mainly
due to the frequent relocation of diesel-using vehicles that were engaged in dike upgrading activities. The
available Zn content was 0.734 μg/g, seemed the low level of Zn in the studied soils. Environmental pollution
is as old as civilization itself. It has become a major concern in recent decades. In this case top soil
management must be ensured and minimum diesel pollution is highly recommended.
Key words: Soil nutrients, embankment, construction site.
Introduction
Bangladesh has recently made impressive gains in key indicators for human development. According to the
2008 statistical update of the UNDP Human Development Index, Bangladesh ranks 147 out of 179
countries with an HDI score of 0.524, making the country as development country. But although
Bangladesh has taken these significant steps towards poverty reduction, there are still many challenges.
More than 63 million people live below the poverty line. Bangladesh faces major challenges to support and
build on the achievements of the past decade, and to stay on track to meet its sustainable development goals
(SDGs). Environmental pressures, exacerbated by climate change, remain significant and can be easily
implemented if corrective action is not a task at local and global level. While the population is expected to
stabilize at around 200 million, the growing wealth and migration will put further pressure on ecosystems
and the living environment. The problem has therefore arisen from the accumulated greenhouse gas
emissions in the atmosphere, which are anthropogenically generated by long-term and intensive industrial
growth and lifestyles with high consumption in developed countries. Although the international community
must be constantly involved in dealing with this threat collectively and cooperatively, Bangladesh needs a
strong national strategy to adapt firstly to climate change and secondly to further improve the
environmental sustainability of its development path. This path is based on its unique resources, the highest
priority of economic and social development and poverty reduction, and its compliance with its legacy of
civilizations that place a high value on the environment and maintain ecological balance. WARPO (2006)
predicted that the sea level rise (SLR) could be increased by 14, 32 and 88 cm in 2030, 2050 and 2100,
respectively, which could overflow about 8, 10 and 16% of Bangladesh’s total land mass respectively. DOE
(2001) predicted in various studies that sea level in the Bay of Bengal could rise by 0.3 to 1.5 m by 2050.
Any change in the current spatial and temporal variation of salinity will be the biophysical system of the
coastal area. In the 1960s, modernization in the country’s coastal zone began to turn this area into
permanent agricultural lands to increase agricultural production. The polders in this area are surrounded on