We present the luminosity function and selection function of 60 \mu m galaxies selected from the Imperial IRAS-FSC Redshift Catalogue ( IIFSCz ) .
Three methods , including the 1 / V _ { \textrm { max } } and the parametric and non-parametric maximum likelihood estimator , are used and results agree well with each other .
A density evolution \propto ( 1 + z ) ^ { 3.4 \pm 0.9 } or a luminosity evolution \propto \exp ( 1.7 ~ { } t _ { L } / \tau ) where t _ { L } is the look-back time is detected in the full sample in the redshift range [ 0.02 , 0.1 ] , consistent with previous analyses .
Of the four infrared subpopulations , cirrus-type galaxies and M82-type starbursts show similar evolutionary trends , galaxies with significant AGN contributions show stronger positive evolution and Arp 220-type starbursts exhibit strong negative evolution .
The dominant subpopulation changes from cirrus-type galaxies to M82-type starbursts at \log _ { 10 } ( L _ { 60 } / L _ { \odot } ) \approx 10.3 .

In the second half of the paper , we derive the projected two-point spatial correlation function for galaxies of different infrared template type .
The mean relative bias between cirrus-type galaxies and M82-type starbursts , which correspond to quiescent galaxies with optically thin interstellar dust and actively star-forming galaxies respectively , is calculated to be b _ { \textrm { cirrus } } / b _ { \textrm { M 82 } } = 1.25 \pm 0.07 .
The relation between current star formation rate ( SFR ) in star-forming galaxies and environment is investigated by looking at the the dependence of clustering on infrared luminosity .
We found that M82-type actively star-forming galaxies show stronger clustering as infrared luminosity / SFR increases .
The correlation between clustering strength and SFR in the local Universe seems to echo the basic trend seen in star-forming galaxies in the Great Observatories Origins Deep Survey ( GOODS ) fields ( at z \sim 1 ) .