  In this paper we have compiled two new open cluster catalogues. In the first
one, there are 119 objects with ages, distances and metallicities available,
while in the second one, 144 objects have both absolute proper motion and
radial velocity data, of which 45 clusters also with metallicity data
available. Taking advantages of the large number of objects included in our
sample, we present an iron radial gradient of about -0.063$\pm$0.008 dex/kpc
from the first sample. By dividing clusters into age groups, we show that iron
gradient was steeper in the past, which is consistent with the recent result
from Galactic planetary nebulae data, and also consistent with the inside-out
galactic disk formation scenarios. Based on the cluster sample, we also
discussed the metallicity distribution, cluster kinematics and space
distribution. A disk age-metallicity relation could be implied from those
properties, although we could not give conclusive result from the age
metallicity diagram based on the current sample. More observations are needed
for metal poor clusters.
