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1.地球生态环境概况长期以来,由于人类对自然规律认识不足,以及社会对自然的需求超过了生态系统所能承受的能力等原因土壤沙漠化日益严重,野生动植物大量灭绝,淡水资源日趋减少,渔业资源锐减,河水严重污染,地球温度明显上升,臭氧层的破坏,酸雨现象正在发展等环境问题严重威胁人
1. Overview of the Earth’s Ecological Environment For a long time, due to the lack of understanding of natural laws by human beings and the fact that society’s demand for nature exceeds the capacity of ecosystems to withstand, the desertification of the soil has become increasingly serious, and wild animals and plants have become extinct in large numbers, and freshwater resources have been declining. The sharp decline in fishery resources, serious pollution of the river, the apparent increase in the temperature of the earth, the destruction of the ozone layer, and the development of acid rain are serious threats to environmental problems.