Abstract:
This study focused on the soils for residential green spaces from reclaimed land in Yantai City. The soil properties including 4 soil physical index and 9 chemical indexes were measured from 9 plots which were identified with the typical structural characteristics of local garden plant communities. The modified Nemerow index method was applied for the comprehensive evaluation of soil quality. The results showed that the soil aeration porosity and bulk density of the surface layer (0−15 cm) of the green space in the residential area were 6.60% and 1.56 g/cm
3, which were at the fifth and sixth levels, respectively; and the mean value of soil organic matter, a proxy of soil fertility, was 14.74 g/kg, which was at the fourth levels. Meanwhile, the mean values of total nitrogen content and soil alkali-hydrolyzable nitrogen were 0.58 g/kg and 16.66 mg/kg, which were at the fifth and sixth levels. These evidences indicated the soil fertility in the surveyed area was poor. In addition, the results of profile measurements showed no consistent pattern of change in soil properties with increasing depth. The averages of the modified Nemerow index in the surface and sub-surface layers of the green space were 0.80 and 0.76, respectively, indicating that the soil quality was very low, with the problems of poor aeration, compaction, and the lack of soil organic matter, which were not conducive to the growth of urban garden plants.