Pedodiversity Studies in ChinaPedodiversity Studies in China 221
loamy eutric-arp-udic argosol at 56, 52 and 41 percent, respectively. The
least frequently appeared soil families are Clay car-vertic-gleyic-stagnic
anthrosol and Clay loamy typic-dark-aqui-cambosol at 2 and 3 percent.
The urban sprawl has turned one soil family from dominant into normal,
two from normal into rare, and one from rare into endangered. Running
the Nested Calculator program for the data from 1984 to 2003 shows that
data sets are nested. The patterns of the composition and distribution of
soils are all nested in 1984, 1995, 2000, 2003, and the degree of nesting has
grown steadily. The nested metric T of soil composition for these four
years is 16.88, 13.91, 13.62, ...