| environ. |
ecosystem degradation Degradation or destruction of large natural environments. When one ecosystem is under attack as a result of natural or man-made disaster it is extremely difficult to calculate the ripple effects throughout nature. When two or more ecosystems are being degraded the probabilities of synergistic destructiveness multiply. Ecosystems in many regions are threatened, despite their biological richness and their promise of material benefits (指大范围自然环境的恶化或破坏。当某个生态系统被自然或人为的灾难破坏时，要计算其对整个自然界的影响是非常困难的。当两个或多个生态系统被恶化时，产生综合破坏作用的可能性也倍增。尽管生态系统的生物丰富性及物质优势，许多地区的生态系统已遭受威胁。) |
