| |||
保护地区 | |||
水土保持区 | |||
滞洪区 | |||
水土保持区 | |||
封山育林区; 水土保护地区 | |||
保护区 | |||
自然保护区 |
conservation area: 31 phrases in 12 subjects |
Business | 1 |
Desert science | 2 |
Earth sciences | 1 |
Ecology | 4 |
Economy | 1 |
Electronics | 1 |
Environment | 2 |
Genetics | 1 |
Hydroelectric power stations | 4 |
Name of organization | 3 |
Technology | 10 |
Water resources | 1 |