Non-point source(NPS)pollution has been the major cause of water quality degradation.However,there are still shortcomings in the current monitoring methods for NPS pollution,such as small monitoring range,error of mon...Non-point source(NPS)pollution has been the major cause of water quality degradation.However,there are still shortcomings in the current monitoring methods for NPS pollution,such as small monitoring range,error of monitoring data,time-consuming and laborious monitoring process.Although the established method,field experiment plots,was used effectively in the first and second national pollution source census in China.However,when the results obtained by monitoring experimental plots are extrapolated to a field or larger scale,there are considerable uncertainties because of the characteristics of large spatial and temporal variation of farmland.To optimize the farmland surface runoff monitoring methods,an online monitoring system for continuous cropping based on a serial pipeline was developed,which takes diversion trench,online flowmeter and dynamic acquisition device as the main body.Compared with the current farmland monitoring methods,this system can realize more precise automatic monitoring of water quantity and quality,and lower costs.This innovative method will provide greater confidence in the actual monitoring of NPS pollution from farmland and wider practical application.This new method could prove particularly valuable for the next national pollution source census in China.展开更多
基金supported by Key S&T Special Project of Yunan Province(202202AE090034,202402AE090024)National Natural Science Foundation of China(42107410,42477441)+1 种基金Hebei Financial Aid Program for Introduced Overseas Scholars(C20230337)Local Science and Technology Development Fund Projects Guided by the Central Government in Hebei Province(246Z3607G).
文摘Non-point source(NPS)pollution has been the major cause of water quality degradation.However,there are still shortcomings in the current monitoring methods for NPS pollution,such as small monitoring range,error of monitoring data,time-consuming and laborious monitoring process.Although the established method,field experiment plots,was used effectively in the first and second national pollution source census in China.However,when the results obtained by monitoring experimental plots are extrapolated to a field or larger scale,there are considerable uncertainties because of the characteristics of large spatial and temporal variation of farmland.To optimize the farmland surface runoff monitoring methods,an online monitoring system for continuous cropping based on a serial pipeline was developed,which takes diversion trench,online flowmeter and dynamic acquisition device as the main body.Compared with the current farmland monitoring methods,this system can realize more precise automatic monitoring of water quantity and quality,and lower costs.This innovative method will provide greater confidence in the actual monitoring of NPS pollution from farmland and wider practical application.This new method could prove particularly valuable for the next national pollution source census in China.
