Based on Investigation and Assessment on Rational Exploitation and Utilization of Groundwater Resources in Typical Areas of the Hexi Corridor, the thesis studies on groundwater and environmental problems arising from ...Based on Investigation and Assessment on Rational Exploitation and Utilization of Groundwater Resources in Typical Areas of the Hexi Corridor, the thesis studies on groundwater and environmental problems arising from the large-scale agricultural development projects in Shule River Basin. The thesis analyzes problems in exploiting and utilizing water resources, defines the function zoning of groundwater resources in key areas and evaluates them. Finally, the thesis uses three-dimensional unsteady flow simulation and regional social and economic development plan to study on the allocation of groundwater in Shule River Basin. A proposal for rational allocation of Shule River Basin water resources has been put forward.展开更多
Based on the monitoring data of water quality in the Ji'an section of the Ganjiang River from 2008 to 2018 by the Water Resources Monitoring Center of Ji'an City,single factor evaluation method,comprehensive p...Based on the monitoring data of water quality in the Ji'an section of the Ganjiang River from 2008 to 2018 by the Water Resources Monitoring Center of Ji'an City,single factor evaluation method,comprehensive pollution index method and seasonal Kendall test method were adopted to study and analyze the characteristics of surface water resources and the changing trend of water quality in the river section.The results show that the water quality in the Ji'an section of the Ganjiang River was generally good,and the water quality of each function zone reached the target requirement.The comprehensive pollution index was controlled between 0.21 and 0.40 over the years,and there was no significant change in time and space,and the water quality was relatively stable.The dissolved oxygen and permanganate index tended to improve,and there was no change in five-day biochemical oxygen demand,while ammonia nitrogen and total phosphorus showed an upward trend.The water quality as a whole showed a trend of deterioration.By discussing the influencing factors of the characteristic pollutants,the causes of water quality in the Ji'an section of the Ganjiang River were further analyzed.It is suggested to strengthen the supervision and control of non-point source and point source pollution.展开更多
Emission trading is one of the most effectivealternatives to controlling water pollution.Water environmentalfunctional zone(WEFZ)is used to determine thewater quality standard and identify the zone boundary foreach ri...Emission trading is one of the most effectivealternatives to controlling water pollution.Water environmentalfunctional zone(WEFZ)is used to determine thewater quality standard and identify the zone boundary foreach river or reach.In this study,a new emission tradingscheme was addressed based on WEFZ,accounting forboth the temporal dimension and water quality control.Atemporal factor of emission trading was proposed based onvariations in the environmental capacity within a year bydividing the year into three periods,including high,normal,and low periods of environmental capacity.Duringeach period,emission trading was implemented exclusively.A water quality-control scheme was suggestedbased on the water quality requirement in the waterfunctional zone,in which the water quality at thedownstream boundary of the zone was required to meetthe water standard following auto-purification in thestream.Two methods of calculating water quality controlare addressed for point-source pollution and non-pointsourcepollution.The calculated temporal dimension andwater quality control were located in Dongxi River of theDaning Watershed in the Three Gorges Watershed.Thehigh period was during June,July,and August,the normalperiod was during April,May,September,and October,and the low period was during January,February,March,November,and December.The results from the waterquality calculation demonstrated that the discharge ofpoint-source and non-point-source pollutions led to anexcess of common contaminants at the downstreamboundary of WEFZ.The temporal and spatial factorsabove should be incorporated into the emission tradingscheme based on WEFZ.展开更多
基金the project Survey and Assessment of Water Resources Exploitation and Utilization in Characteristic Areas of the Hexi Corridor
文摘Based on Investigation and Assessment on Rational Exploitation and Utilization of Groundwater Resources in Typical Areas of the Hexi Corridor, the thesis studies on groundwater and environmental problems arising from the large-scale agricultural development projects in Shule River Basin. The thesis analyzes problems in exploiting and utilizing water resources, defines the function zoning of groundwater resources in key areas and evaluates them. Finally, the thesis uses three-dimensional unsteady flow simulation and regional social and economic development plan to study on the allocation of groundwater in Shule River Basin. A proposal for rational allocation of Shule River Basin water resources has been put forward.
基金Supported by the Open Foundation of Poyang Lake Water Resources and Ecological Environment Research Center,Ministry of Water Resources(ZXKT201707)Science and Technology Innovation Foundation for Young Scholars of Jiangxi Hydrological Bureau in 2018(SWJJ-KT201805).
文摘Based on the monitoring data of water quality in the Ji'an section of the Ganjiang River from 2008 to 2018 by the Water Resources Monitoring Center of Ji'an City,single factor evaluation method,comprehensive pollution index method and seasonal Kendall test method were adopted to study and analyze the characteristics of surface water resources and the changing trend of water quality in the river section.The results show that the water quality in the Ji'an section of the Ganjiang River was generally good,and the water quality of each function zone reached the target requirement.The comprehensive pollution index was controlled between 0.21 and 0.40 over the years,and there was no significant change in time and space,and the water quality was relatively stable.The dissolved oxygen and permanganate index tended to improve,and there was no change in five-day biochemical oxygen demand,while ammonia nitrogen and total phosphorus showed an upward trend.The water quality as a whole showed a trend of deterioration.By discussing the influencing factors of the characteristic pollutants,the causes of water quality in the Ji'an section of the Ganjiang River were further analyzed.It is suggested to strengthen the supervision and control of non-point source and point source pollution.
基金This research was supported by the Nonprofit Environmental Protection Specific Project of China(No.200709024)the National Natural Science Foundation of China(Grant No.40771193).
文摘Emission trading is one of the most effectivealternatives to controlling water pollution.Water environmentalfunctional zone(WEFZ)is used to determine thewater quality standard and identify the zone boundary foreach river or reach.In this study,a new emission tradingscheme was addressed based on WEFZ,accounting forboth the temporal dimension and water quality control.Atemporal factor of emission trading was proposed based onvariations in the environmental capacity within a year bydividing the year into three periods,including high,normal,and low periods of environmental capacity.Duringeach period,emission trading was implemented exclusively.A water quality-control scheme was suggestedbased on the water quality requirement in the waterfunctional zone,in which the water quality at thedownstream boundary of the zone was required to meetthe water standard following auto-purification in thestream.Two methods of calculating water quality controlare addressed for point-source pollution and non-pointsourcepollution.The calculated temporal dimension andwater quality control were located in Dongxi River of theDaning Watershed in the Three Gorges Watershed.Thehigh period was during June,July,and August,the normalperiod was during April,May,September,and October,and the low period was during January,February,March,November,and December.The results from the waterquality calculation demonstrated that the discharge ofpoint-source and non-point-source pollutions led to anexcess of common contaminants at the downstreamboundary of WEFZ.The temporal and spatial factorsabove should be incorporated into the emission tradingscheme based on WEFZ.
