碧塔海流域景观类型的面积变化情况
年份 |
景观类型及面积/hm2 |
|||||||
① |
② |
③ |
④ |
公路 |
沼泽化草甸 |
湖泊 |
合计 |
|
1955 |
1511.82 |
16.94 |
8.39 |
180.28 |
0.00 |
64.78 |
162.79 |
1945.00 |
1974 |
1603.70 |
13.48 |
8.39 |
91.86 |
0.00 |
64.78 |
162.79 |
1945.00 |
1981 |
1615.10 |
11.78 |
8.39 |
82.16 |
0.00 |
64.78 |
162.79 |
1945.00 |
1994 |
1637.66 |
7.01 |
8.39 |
64.37 |
0.00 |
64.78 |
162.79 |
1945.00 |
2005 |
1646.61 |
5.95 |
8.39 |
54.56 |
1.92 |
64.78 |
162.79 |
1945.00 |