(2)
where EIIw represents the ecological importance index of the space
maintaining water security,s1is the index of the distance to a river or lake,s2is the index of the type of flood conditioning storage areas,s3is the index of the type of water source protection areas,
ands4is the index of the importance for water storage. Using Eq.(2), we calculated the ecological importance index of the space maintaining water security for each grid using software
ArcGIS9.3. Finally, using the raking standards in Table 1,we obtained the spatial grade map of water security importance.
(2)where EIIw represents the ecological importance index of the spacemaintaining water security,s1is the index of the distance to a river or lake,s2is the index of the type of flood conditioning storage areas,s3is the index of the type of water source protection areas,ands4is the index of the importance for water storage. Using Eq.(2), we calculated the ecological importance index of the space maintaining water security for each grid using softwareArcGIS9.3. Finally, using the raking standards in Table 1,we obtained the spatial grade map of water security importance.
การแปล กรุณารอสักครู่..
