英语听力：自然百科 大堡礁 珊瑚礁至雨林(31)（在线收听）

Obviously, this has a dramatic impact on the terrestrial environment, but it also has a significant effect on the reef itself.

显然这堆陆地环境将造成巨大影响，对大堡礁本身也有显著影响。

And it's not only crops, cattle ranches, fish farms, six large coastal cities and many holiday resorts along the coast all have an impact on the reef system.

农作物不是唯一的问题，养牛场，养鱼场，6个大型沿海城市，无数海岸度假圣地都对珊瑚礁系统产生影响。

Without the natural vegetation controlling the movement of water in the seidments it carries, heavy rain now washes millions of tons of silt, often laced with damaging fertilizers of pesticides straight into the lagoon.

没有自然植被被缓冲雨水及雨水携带的沉积物，数百万吨淤泥被大雨直接冲刷下来，其中时常携带着破坏环境的化肥和农药，所有这些直接流入环礁湖。

Sediment pollutants can be so extensive, they sometimes spread all the way to the outer reef.

入海的沉积物扩散极广，有时甚至会蔓延到外堡礁。

In the sea grass meadows, the fine silt shrouds the light-dependant plants and fertilizers feed algal blooms that choke the life from them.

在海草牧场，泥沙覆盖了依赖光照的植物，而肥料催生了藻类爆发，消耗了其他生命需要的氧气。

When the meadows die, the turtles, dugongs and baby fish that depend on them die too.

当海草因此大批死去，以海草为食的海龟，儒艮和依赖海草的幼鱼也随之死去。

Near the shore, the water can be so murky that less light reaches the corals, so most fringing reefs have also disappeared.

靠近岸边的水体也会变得极为浑浊，只有少量光线可以照到珊瑚上，所以大部分的岸礁也消失了。