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Craes xiaodong-integrated river health assessment


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Craes xiaodong-integrated river health assessment

  1. 1. The development of Integrated Streamhealth assessment in Taizi River, China --- by applying the land use as main disturbances pilot research Dr. Xiaodong Qu 流域水生态研究室
  2. 2. Agenda1. Background information2. Steps to assess3. Significance
  3. 3. Background information-Research area (Taizi River) North east of China-The fifth biggest watershed in China Around 413km long above13,000 km2 Quick development of Urban Long history industrial and farmland pollution
  4. 4. Incident human water security and biodiversity threatVörösmarty et al., 2010
  5. 5. Background information-Main threatens Farmland Urbanization
  6. 6. Ctenogobius brunneus TN6 Squalidus chankaensis Hypseleotris swinhonis BS2 QH TN5 TN3 TN2 SD TN1 BS1 TN7 TN4 BS3 TZ4 TN8 TZ5 TZ3 TZ1 GYG-R Dengta Benxi TZ2 TS1 TZ6 Xiaoshi TS4 TS5 TS2 TZ15 BS4 TZ8 XT3 TZ14 TZ10 TZ7 TS3 TZ11 TZ16 TZ13 SW-R XH7 XT2 TZ17 Liaoyang TZ9 TZ12 TH5 XH6 XT1 NS3 NS2 LH2 Liaoyang* TH4 TZ18 XH5 XH4 YL2 Anshan TH-R TZ19 YL1 LH1 XH3 TZ20 NS1 TZ21 XH2 XH1 TZ22 HW TH3 Haicheng TH1TZ23 HC5 TH2 HC4 Lampetra morii Cluster I HC1 Cluster II HC3 Cluster III HC2 Cluster IV Background information-Main threatens
  7. 7. Background information-Main purpose Development Improve & restore Identify the stressors Management Method Suitable methods to assess
  8. 8. STEPS TO ASSESS-LIAO RIVER1. Classification of watershed2. Construction of conceptual model3. Identification of stressors and indicators4. Sampling procedures5. Quantification-stressors & indicators6. Target and threshold setting7. Scoring for Assessment and reporting8. Connecting to the management
  9. 9. Step 1-Classification DEM, A-T, A-R(similar stream habitat and orders)
  10. 10. Step 2-Conceptual model Upper Mountain Stream region (M-S)
  11. 11. Step 2-Conceptual model Middle Hilly Stream region (H-S)
  12. 12. Step 3- Identifying the stressor and Indicators
  13. 13. STEP 4. SAMPLING, MEASURING & CALCULATION Physical-Chemical and nutrientPhysical/ Basic Chemical Cations/Anions Nutrient HeavyOxygen metalsdemandsWater-T/ pH, DO, EC, SS, Potassium , TN, TP, Pb, Cd,BOD5, Alkalinity, TDS, Calcium, Sodium, NH3-N, Cr, Al,COD, Silicate, Magnesium, NO2-N, Zn, Cu, volatile phenols, Chlorine, Sulphate, NO3-N, Hg, As Escherichia coli Bicarbonate P04-P Collection of aquatic organismAlgae 288 sites A-IBI, SR, diversity index,Macroinvertebrate 288 sites B-IBI, diversity index, EPT, BMWPFish 290 sites F-IBI, Ind., SR, diversity index,
  14. 14. Step 5. Quantification 50SR of Macroinvertbrate 80 Individuals of Fish 40 60 Fi_D M_S 30 40 20 20 10 0 100 150 200 250 300 350 5 10 15 20 EC Conductivity Urbanization %Construction in Catchment (LR) Richness= 3.7027 – 0.0024EC. (LR) Ind. = 4.4303 – 0.1382*Urban%. P < 0.0001. Adjusted R2 = 0.1502. P < 0.0001. Adjusted R2 = 0.3169.
  15. 15. Step 5. Quantification Indicators listTaizi River Indicators with significant* relationship with stressors DO, EC, NH3-N, TN, TPM-S M:SR (F),BMWP,EPT R(F) F: SR, F-IBI, F-BP index, ; A: A-IBI, A-BP index DO, EC, volatile phenols, NH3-N, TN, TPH-S M:SR (F),BMWP,EPT R(F) F: SR, F-IBI, F-BP index, ; A: A-IBI, A-BP index DO, EC, volatile phenols,BOD5, CODCr, NH3-N, TN, TPF-S M:SR (F),BMWP,EPT R(F) F: SR, F-IBI, F-BP index, ; A: A-IBI, A-BP index *(p<0.05)
  16. 16. Step 6. Target & thresholda) Lower Considerable High b) High Considerable Lower stress stress stress stress stress stress Frequency 5th percentile median median 95th percentile Indicator values Indicator values Observed values of an indicator may be used to inform decisions about target and threshold values for aquatic ecosystem health.
  17. 17. Step 7. Scoring The standardise scores from 0 to 1 was used: 1=health condition equal to or over the target value 0=disaster condition lower than the threshold value a) Site index score = 1-(target-obs)/(target-threshold) For negative trends with the stressor or b) Site index score = 1-(obs-target)/(threshold-target) For positive trends with the stressor
  18. 18. Step 7. Assessment and reports
  19. 19. Step 8. Connection with Management  What kind of information we can give to the stream manager? Challenges: 1) The low monitoring data of the aquatic organisms 2) Methods to improve the stream health and restoration 3) Suitable indicators for the local government
  20. 20. Step 8. Connection with Management  What kind of information the stream manager need? Challenges: 1) Be aware of the importance of the biological assessment 2) The join in of the local residents 3) The communication-Liao River Reserve & Liao River Research Center (CRAES)
  21. 21. Step 8. Connection with Management 520 km long
  22. 22. SIGNIFICANCE Up to now, the river health assessment mainly based on the water quality monitoring. As we known, the river health is always more than the health of water quality based on the all over world research (US-EPA, Europe-EWF). A new river health assessment program is under development by MEP, and would be promoted for whole country (over US$1.5 Billion for the next ten years). In the future, our research results and methods would be highly recommended. This workshop had provided an excellent chance to share the experience for the river health assessment, and examples for the national river systems biological monitoring.
  23. 23. Thanks!