Table 3 Set of C&I and indicator weights for assessment of wetland state system
Evaluation criterion | Indicator | Relation with WEH | Indicator weight | |
|---|---|---|---|---|
(\({W}_{j}\)), 2016 | (\({W}_{j}\)), 2022 | |||
State of wetland catchment | Patch density (S1) | + | 0.037 | 0.033 |
Largest patch index (S2) | + | 0.043 | 0.041 | |
Landscape diversity index (SHDI) (S3) | + | 0.039 | 0.033 | |
Landscape contagion index of WIZ (S4) | + | 0.032 | 0.023 | |
Existing extent of WIZ around the wetland acting as buffer (S5) | + | 0.024 | 0.048 | |
Ratio of wetland wetted perimeter to WIZ perimeter acting as buffer (S6) | + | 0.012 | 0.036 | |
State of wetland hydrology: physical properties | Depth of water (S7) | + | 0.036 | 0.035 |
Average turbidity condition of wetland water (S8) | − | 0.034 | 0.023 | |
Temperature of surface water of wetland (S9) | − | 0.014 | 0.007 | |
State of wetland hydrology: chemical properties | Status of biological oxygen demand (S10) | − | 0.036 | 0.034 |
Status of chemical oxygen demand (S11) | − | 0.036 | 0.034 | |
Status of pH (S12) | − | 0.018 | 0.015 | |
Concentration of cadmium (S13) | ||||
Concentration of mercury (S14) | ||||
Concentration of lead (S15) | ||||
Concentration of chromium(S16) | ||||
Status of dissolved oxygen (S17) | + | 0.011 | 0.034 | |
Eutrophication level (S18) | − | 0.043 | 0.070 | |
Status of salinity of wetland water (S19) | − | 0.016 | 0.017 | |
State of wetland soils: physico-chemical components (WIZ) | Status of soil bulk density (S20) | − | 0.014 | 0.011 |
Available nitrogen (S21) | + | 0.033 | 0.033 | |
Available phosphorus (S22) | + | 0.021 | 0.034 | |
Status of potassium (S23) | + | 0.016 | 0.029 | |
Status of organic carbon (S24) | + | 0.016 | 0.012 | |
Soil electrical conductivity (S25) | − | 0.036 | 0.035 | |
Soil pH (S26) | − | 0.035 | 0.034 | |
Concentration of arsenic (S27) | − | – | – | |
Concentration of cadmium (S28) | − | – | – | |
Concentration of mercury (S29) | − | – | – | |
Concentration of lead (S30) | − | – | – | |
Concentration of chromium (S31) | − | – | – | |
State of wetland biota: floral characteristics | Normalized difference vegetation index (NDVI) (S32) | + | 0.021 | 0.015 |
Species diversity in WPZ (S33) | + | 0.024 | 0.017 | |
Species diversity in WIZ (S34) | + | 0.030 | 0.028 | |
Tree density in WIZ (S35) | + | 0.035 | 0.034 | |
Number of dominant aquatic species (S36) | + | 0.027 | 0.027 | |
Level of presence of eutrophic species (S37) | − | 0.021 | 0.036 | |
State of wetland biota: faunal characteristics | Status of fish diversity (S38) | + | 0.030 | 0.036 |
Status of avifauna diversity (S39) | + | 0.000 | 0.003 | |
State of ecosystem products and services derived from the wetland | Status of crop productivity (S40) | + | 0.026 | 0.003 |
Availability of sellable wetland flora (S41) | + | 0.043 | 0.009 | |
Availability of sellable fishes (S42) | + | 0.018 | 0.015 | |
Availability of another sellable wetland fauna (S43) | + | 0.008 | 0.013 | |
Potential to regulate floodwater (S44) | + | 0.016 | 0.034 | |
Potential to ground water recharging (S45) | + | 0.012 | 0.002 | |
Capacity of the wetland to facilitate transport (S46) | + | 0.021 | 0.002 | |
Potential of the wetland as an ecotourism site (S47) | + | 0.036 | 0.019 | |
Realization of educational and recreational values (S48) | + | 0.018 | 0.021 | |
Presence of traditional, esthetic and ritual values (S49) | + | 0.012 | 0.013 | |