Assessment of spatial and temporal changes in nitrogen distribution in the river sediments of Chao Phraya River Basin, Thailand | |
| Author | Thitima Jenkhetkan |
| Call Number | AIT Thesis no.EV-18-34 |
| Subject(s) | Nitrogen--Environmental aspects--Thailand--Chao Phraya River Sediment control--Thailand--Chao Phraya River |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-18-34 |
| Abstract | Chao Phraya watershed land use changed can be significantly affected by anthropogenic impacts including the social-economic development level, population density, intensification of agriculture, rapid industrialization, and expansion of urbanization which relate to nitrogen loading in the sediment. Nitrogen pollutant can lead to severe environmental problems including the environment degradation and loss of aquatic biodiversity due to eutrophication problem. This study investigated the response of river sedimentary nitrogen distribution to land use change-based anthropogenic impacts by selected twenty-two sampling sites in four sub-watersheds with different development levels and land use patterns and measured nitrogen form and phosphate in the sediment core. The result can indicates the temporal nutrient changing overtime and identify the spatial of nitrogen distribution which relate to land use patterns and human activities.Almost of all nutrients in the higher human activities impact areas were also higher concentration nutrients loading including Thachin and Chao Phraya sub-watershed had high loading of Total nitrogen around 270 mg/kg N and 35 mg/kg N, total phosphorus approximately 2,792 mg/kg P and 1,088 mg/kg P, phosphate around 3,506 mg/kg P and 1,247 mg/kg P and ammonium approximately 156 mg/kg N and 71 mg/kg N, respectively. These areas had high intensive of urbanization, industrial and agricultural area which high input of municipal, industrial and agriculture wastewater discharge to the river. This result has related with the Pearson correlation statistics result which indicated that more human activities areas including agricultural and urbanization areas have been significantly higher related with nutrients loading in those areas with p value < 0.05, r value > 5. The main land use of Pasak sub-watershed is agriculture and possible to have intensive of fertilizer that can relate to this area have highest amount of nitrate/nitrite loading approximately 12.9 mg/kg N. |
| Year | 2018 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-18-34 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Thammarat Koottatep; |
| Examination Committee(s) | Shrestha, Rajendra Prasad;Ekbordin Winijkul;Xue, Wenchao; |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2018 |