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Connecting in-situ measured solar-wind plasma properties with typical regionson the Sun can provide an effective constraint and test to various solar windmodels. We examine the statistical characteristics of the solar wind with anorigin in different types of source regions. We find that the speeddistribution of coronal hole (CH) wind is bimodal with the slow wind peaking at~400 km/s and a fast at ~600 km/s. An anti-correlation between the solar windspeeds and the O7+/O6+ ion ratio remains valid in all three types of solar windas well during the three studied solar cycle activity phases, i.e. solarmaximum, decline and minimum. The N_Fe/N_O range and its average values alldecrease with the increasing solar wind speed in different types of solar wind.The N_Fe/N_O range (0.06-0.40, FIP bias range 1-7) for AR wind is wider thanfor CH wind (0.06-0.20, FIP bias range 1-3) while the minimum value of N_Fe/N_O(0.06) does not change with the variation of speed, and it is similar for allsourceregions. The two-peak distribution of CH wind and the anti-correlationbetween the speed and O7+/O6+ in all three types of solar wind can be explainedqualitatively by both the wave-turbulence-driven (WTD) andreconnection-loop-opening (RLO) models, whereas the distribution features ofN_Fe/N_O in different source regions of solar wind can be explained morereasonably by the RLO models.

Charge States and FIP Bias of the Solar Wind from Coronal Holes, Active Regions, and Quiet Sun