http://rulrepository.ru.ac.bd/handle/123456789/202 2026-04-07T21:47:05Z 2026-04-07T21:47:05Z Jahangir, M. http://rulrepository.ru.ac.bd/handle/123456789/997 2022-12-21T04:36:01Z 2009-01-01T00:00:00Z

Consequences of Arsenic Contamination in Human Beings and Their Prevention by Applying Homoeopathic Principles Jahangir, M. Identification of arsenicosis patient was done by the field survey of Haria and Ramgonj village of Sonargaon upazilla and Ahmadpur and Sagarkandi village of Sujanagar upazilla. Fifteen (15) from Haria, two (2) from Ramgonj, 60 from Ahmadpur and 14 patients were choosen from Sagarkandi village. Then there had drawn a relation between age and arsenicosis and the relation between occupation of the patient and arsenicosis. The percentage of affected middle age groups (21-40) and (41-60) were respectively 76.48% and 11.76% among all affected people (15:2) and of all population only 16.04% were affected in the research area of Sonargaon upazila. In Sujanagar upazila, the percentage of affected middle age groups (21-40) and (41-60) were respectively 58.07% and 25.81% among all affected people (26:5) and of all population 62% were affected. This Thesis is Submitted to the Institute of Environmental Science (IES), University of Rajshahi, Rajshahi, Bangladesh for The Degree of Master of Philosophy (MPhil)

2009-01-01T00:00:00Z Rahman, Md. Atiqur http://rulrepository.ru.ac.bd/handle/123456789/662 2022-07-20T04:09:19Z 2016-01-01T00:00:00Z

Impacts of Agriculture Practices on Sustainable Biodiversity in Rajshahi District Rahman, Md. Atiqur Bangladesh is one of the biodiversity rich countries in the world. However, the biodiversity is declining day by day due to anthropogenic activity like human population growth, habitat destruction, pollutions, agriculture, global warming, forest fragmentation etc. Agricultural activities such as tillage, drainage, intercropping, rotation, grazing and extensive usage of pesticides and fertilizers have significant implications for wild species of flora and fauna. Some management techniques, changes in agricultural practices, monocropping, hybridization and land degradation, create such fundamental habit changes that there are significant shift in species composition. The study was conducted to determine the impacts of agriculture practices on sustainable biodiversity in Puthia Upazilla, Rajshahi district. There are number of undesirable environmental impacts associated with natural vegetation and trees, indigenous plant diversity, exotic plant, organic matter, fish diversity, shortage of water, wild life and indigenous bird species diversity, hybrid crops, use of chemical fertilizer, pesticides herbicide, insecticide found in the study area. It was found that, some agricultural practices with the use of modern technologies causes a depletion of biodiversity. There are about 15052 hectre of cultivable land present in Puthia. In 1990s, about 60.2% of people used traditional method of cultivation. On the other hand, now a days about 75% of peoples are using modern methods of cultivation. In 1990, cultivable land area were 36157 acre of which only 12.5% were irrigated but in 2014, cultivale land were 36481 and 100% were under irrigation. About 5-10% tubewell water are available In March-May and 25-30% of tubewell water are available in may-June.Static level of ground water rised and dependency on submersible pump increased. In 2012, 2013, 2014 and 2015 annual rain fall were recorded as 729, 1134, 1475 and 1626 mm respectively in the study area. About 28 wetlands or beels with 1821 hectore of total land in puthia. Among them, only 890 hectore area were used for cultivation in 1990 and 1739 hectore are using for cultivation in 2014. Now a trend has been started to digging pond in the beel area. In 1990, cultivation mostly depend on organic manure but in 2014 use of chemical fertilizer has tremendously increased. In 1990 most of the people used only 5-7 items of pesticides on their cultivable land on the other hand the use of pesticide practices increasing in the study area up to 15-22 items in 2014. There were about 31 species of fruit plants, 29 species of timber plants and 43 species of medicinal plants were commonly found in 1990, but in 2014 it is only 22 species of fruit, 18 species of timber plants and 25 species of medicinal plants are commonly found respectively. A total of 184 plant species were identified in the six study villages during last one year 2014. Among the 184 plant species, 45% weed species, 15% vegetable, 12% fruits species, 10% timber species, 4% spices and 14% medicinal plants species. In case of wild animal, in 1990 about 21 species were seen in the study area but depletion of wild animals are occurring in the study area, Only about 14 species rarely found in 2014. About total 34 species of birds recorded and were common in 1990. But only 25 species are common in 2014. About 39 species of fish were common in 1990. But only 21 species are common in 2014. A total of 75 animals species were identified in the six study Villages during last one year 2014. Among the 75 animals species, 3% livestock, 4% poultry, 3% pet animals, 19% wild animals, 33% birds and 38% fishes species. Findings of this study that cultivation/land used pattern (50%), Use of chemical fertilizer (9.2%), Use of pesticide etc. (16%), Irrigration (4.4%), Hybrid, HYV and Exotic plant (4.5%), Use of modern agriculture technology (5.2%), Habitat distruction (3.4%), Road constration and urbanization (4.7%) and others (2.6%) were the causes of loss of biodiversity mentioned by the respondents. But there occur depletion among the species in time to time and up to 2014 which is mostly done by anthropogenic activities. During data collection from questionnaires, it was found that most of the farmers did not taken the training of proper use of insecticides, pesticides, weedicides and chemical fertilizers. But the have the realization to the necessity of sustainable Biodiversity conservation. Additionally impacts of agriculture practices on sustainable biodiversity afford an opportunity for researchers to make further researches, particularly about the conditions in which native and diverse species will flourish. This thesis is Submitted to the Institute of Environmental Science (IES), University of Rajshahi, Rajshahi, Bangladesh for The Degree of Master of Philosophy (MPhil)

2016-01-01T00:00:00Z Shaik, Md. Rafiqul Islam http://rulrepository.ru.ac.bd/handle/123456789/572 2022-06-14T05:12:01Z 2006-01-01T00:00:00Z

Socio-Economic and Environmental Impacts of Urbanization in Bogra Municipal Area of Bangladesh Shaik, Md. Rafiqul Islam Bangladesh is not only a developing country but also an over populated one. Its population is increasing rapidly day by day. We cannot control it successfully. The country is trying for development since 1971, after liberation. But its development is hindered due to lack of proper management of its growing population. Urbanization in this country is increasing at a very high rate, but with this, urban facilities are not increasing at the required rate. In this dissertation, the impact of urbanization on social characteristics like-age structure, educational facilities and literacy, health care and maternity services, family planning activities, migration, population density, traffic Jam, women empowerment, social consciousness, norms and values and social recreational facilities have been examined. Here it has also analyzed the impact of urbanization on economic characteristics like-financial classification, occupational structure, consumption pattern, housing pattern, sources of drinking water, electricity facility, transport and communication, financial institutions, land value, land ownership and house ownership as well as the impact of urbanization on environmental characteristics like-flora, fauna, cultivation, sanitary facilities, sewerage systems, pollution, slums, drug addiction, prostitution and law and order situation. This dissertation is done by collecting primary data from grass root level through field survey. Fourteen (14) sets of questionnaire including one hundred and forty seven (14 7) 'closed' and 'open ended' questions were prepared for collecting information from the selected one hundred and thirty three ( 13 3) respondents. The secondary data is collected from related published and reported materials including books, articles, research reports, official documents, theses and dissertations. The collected data from primary and secondary sources are presented in tabular form. Opinions have also been taken from the civil society to analyze the causes and effects of the impact of urbanization. This thesis is Submitted to the Institute of Environmental Science (IES), University of Rajshahi, Rajshahi, Bangladesh for The Degree of Master of Philosophy (MPhil)

2006-01-01T00:00:00Z Roy, Sunil Chandra http://rulrepository.ru.ac.bd/handle/123456789/364 2022-05-09T04:19:29Z 2014-01-01T00:00:00Z

Environmental Impact of Teesta Barrage on the Command Area in Bangladesh Roy, Sunil Chandra Bangladesh Water Development Board (BWDB) has implemented Teesta Barrage Irrigation Project in 1994. The objectives of this mega project were flood control and creation of supplementary irrigation facilities for an area of 1,54,250 ha under the greater Rangpur district. This study was conducted to identify the environmental impact of Teesta Barrage Irrigation Project on agriculture, groundwater and rainfall in the project area by trend analysis of two periods: before and after project. For trend analysis 22 years (1983- 2004) ground water table and 20 years (1984-2003) rainfall data were used. From ground water data analysis, it is found that seasonal mean ground water table was up in post-project period (1994-2005) of Teesta Barrage Irrigation Project and level was down in pre-project period (1982-1993). The mean differences of ground water table of these two periods was significantly different (0.01% level) in all six seasons of summer, rainy, autumn, late autumn, winter, spring and summer. Therefore, it is concluded that Teesta Barrage Irrigation Project has positive impact on ground water resources and improved the ground water table in the command area. From rainfall data analysis, it is observed that mean rainfall in post-project period (1994-2003) of Teesta Barrage Irrigation Project was increased in all six seasons in the study area compare to mean rainfall of pre-project period (1984-1993). However, the mean difference rainfall between the periods (1984-1993) & (1984-2003) was found significant only in winter season. Therefore, it is concluded that Teesta Barrage Irrigation Project has positive impacts on rainfall pattern in the project area. As per respondents’ opinion, Teesta Barrage Irrigation Project has also positive impacts on the following environmental components. i) Increased food production for HYV-Boro and T-aman cultivation ii) Increased fruiting plants and social forest plantation iii) Increased drinking water availability iv) Decreased water born diseases v) Improved income and standard of life of local people However, Teesta Barrage Irrigation Project has reduced the open fisheries in the project area. Jute and aus cultivation are dramatically reduced in this area. This Thesis is submitted to The Institute of Environmental Science (IES), University of Rajshahi, Rajshahi, Bangladesh for The Degree of Master of Philosophy (MPhil)

2014-01-01T00:00:00Z