- Instrument soil plots in sub-catchments and their perennial streams for capture of water flowing through the watershed.
- Soil water sampling equipment (lysimeters) are installed at 21 sites covering main land-use, soil-type and agricultural management practises. Soil samples are collected for lysimeter plots as well as through a synoptic survey of the soil (78 samples) in the local watershed.
- Analyze soil and surface water chemistry with emphasis on pools of P in the soil and particle bound P in surface runoff.
- Conduct seasonal synoptic study of water and soil chemical and physical characteristics in the whole watershed, including pools of nutrients in the soils.
- Water chemistry and algae in three streams draining into the reservoir from the north local ctachment are being monitored.
- Episode studies of water chemistry of runoff from selected sub-catchments.
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Special focus in the monitoring is set on capturing runoff episodes. Fortunately we were able to capture the runoff during the major flood event in the Beijing region this summer!
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- Nutrient fractions in river and surface water. By means of different sample pre-treatment determine important P fractions, with emphasis on particle bound P.
- The analytical labs at RCEES and TAES have been given considerable advice and training. A preliminary performance test (comparison of methods at laboratories) of the labs at TAES and RCEES has been performed for their phosphorus analysis methods.
- Use the DGT sampler for passive collection of bio available P fraction as well as low molecular organic phosphorus compounds. The potential of new sediment dept profile probes will be examined (DGT, DET and peeper systems).
See instructional video on how to deploy DGTs in streams and rivers:
- Monitoring other water quality indices (Chl-a, turbidity, pH, temperature, odour etc.) by means of a multiparameter water quality monitor (YSI 6600-2) in the Yuqiao reservoir, which helps to calibrate the model of algae bloom.
- 35 depths measurements of the reservoir will be used to make a crude bathygraphic map. Without knowledge of the water level variations and the water level at the time of measurement, this map will necessarily have low precision. Two sets of temperature and light intensity loggers (total 16 loggers) were placed in the reservoir in late August 2012. The sampling sites of the loggers were chosen to be at the deepest part in the western end of the reservoir. Furthermore, we have also used echo sounder and GPS to measure depth with corresponding coordinates at approximately 30 sites.