A Modified Combination Rule for Numbers Theory

Table 1

The meanings of factors and subfactors in EIA in literature [52].

Factor	Subfactor
Physical/chemical (P/C)
P/C1	The impacts of lake water volume
P/C2	The impacts of the lake sedimentation
P/C3	The impacts of crop and grazing areas
Biological/ecological (B/E)
B/E1	The impacts of lake fisheries
B/E2	The impacts of biodiversity
B/E3	The impacts of primary production
B/E4	The impacts of aquatic macrophytes
B/E5	The impacts of disease vector populations
Sociological/cultural (S/C)
S/C1	The loss of housing
S/C2	The loss of shops/public buildings
S/C3	The impacts of accessing routes
S/C4	The impacts induced by changes of tourism patterns
S/C5	The impacts of water supplies
S/C6	The impacts of diet/nutrition
S/C7	The impacts of aesthetic landscapes
S/C8	The impacts of water/vector borne disease
S/C9	The impacts of upstream quality of life
S/C10	The impacts of downstream quality of life
Economic/operational (E/O)
E/O1	The impacts of crop-generated incomes
E/O2	The impacts of fishery generated incomes
E/O3	The convenience of operation and maintenance of option
E/O4	The cost of operation and maintenance of option
E/O5	The cost of resettlement/compensation for land loss
E/O6	The cost of rehabilitation and restoration of shops
E/O7	The cost of restoration of accessing routes
E/O8	The impacts of tourism-generated incomes