1.
1977 1992
2.
20 60%~70%
3.
4.
5.
1
2
1994~1999 1.7 km2 3400km2 - - -
6.
1979 40 40 1980 1990 200 700 ha 400 ha 5
7.
1 20
20 93.5% 1.5% 5% 30~50ha
8.
9.
10.
7~10
11.
10
12.