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说明:70年代初期联合国开始重视人类赖以生存的环境问题,到70年代后期才大致 确定了环境统计的基本内容。本专题统计资料的数据,除注明年份者外,均 为80年代中期的情况。
Explanation: In the early 1970s, the United Nations began to attach importance to the environmental problems on which mankind lives. Only by the late 1970s did the general content of environmental statistics be broadly determined. The data of the statistical data of this topic are all from the mid-1980s except those indicated in the figures.