高密度管托:(原创听录)HOME---《地球美丽有赖你》(6)---一部超级经典唯美环保记录片

来源:百度文库 编辑:九乡新闻网 时间:2024/03/29 01:54:35

 (续上)

In Rajsthan, India, Udapur is a miracle of water. The city was made possible by a system of dams and channels that created an artificial lake.

For its architects, was water so precious that they dedicated a palace to it?(music)

India risks being the country that suffers most from the lack of water in the coming century. Massive irrigation has fed the growing population and in the last 50 years, 21 million wells have been dug. The victory over famine has a downside, however, in many parts of the country, the drill has to sink ever deeper to hit water. In western India, thirty percent of wells have been abandoned. The underground aquifers are drying out.(music) vast reservoirs will catch the monsoon rains to replensh the aquifer. In dry season, women from local villages dig them with their bare hands.

Thousands of kilometers away, 800 to 1,000 litres of water are consumed per person per day.

Las Vegas was built out of the desert. Millions of people live there. Thousands more arrive every month. The inhabitants of Las Vegas are among the biggest consumers of water in the world.

Palm Springs is another desert city with tropical vegetation and lush golf courses.

How long can this mirage continue to prosper?

The earth can not keep up.

The Colorado River, which brings water to those cities, is one of those rivers that no longer reaches the sea. Even more alarmingly, its flow is diminishing at sourse.

Water levels in the catchment lakes along its course are plummeting. Lake Powell took 17 years to reach high-water mark. Its level is now half of that.

Water shortages could affect nearly two billion people before 2025. yet water is still abundant in unspoiled regions of the planet------the wetlands.

These wetlands are crucial to all life on earth. They represent six percent of the planet. Marshes are sponges that regulate the flow of water. They absorb it in the wet season and release it in the dry season. The water runs off the mountain peaks, carrying with it the seeds of the regions it flows through. This process gives birth to unique landscapes, where the diversity of species is unequaled in its richness. Under calm water lies a veritable factory where this ultimately linked richness and diversity patiently filters the water and digests all the pollution. Mashes are indispensable environments for the regeneration and purification of water.

These wetlands were always seen as unhealthy expanses, unfit for human habitation.

In our race to conquer more land, we have reclaimed them as pasture for our livestock or as land for agriculture or building.(music)

In the last century, half of the world’s Marshes were drained. We know neither their richness nor their role.

All living matter is linked.

Water, air, soil, trees.

The world’s magic is right in front of our eyes.(music)

Trees breathe groundwater into the atmosphere are light mist. They form a canopy that alleviates the impact of heavy rains, and protects the soil from erosion. The forest provide the humidity that is necessary for life. They are the mother and father of rain. The forests store carbon. They contain more than all the earth’s atmosphere. They they are the cornerstone of the climatic balance on which we all depend. Trees provide a habitat for three-quarters of the planet’s biodiversity, that’s to say, of all life on earth. Every year, we discover new species we had no idea existed insects, birds, mammals.(music)

These forests provide the remidies that cure us. The substances secreted by these plants can be recognized by our bodies. Our cells talk the same language. We are of the same family.(music)

Mangroves are forests that step out onto the sea. Like coral reafs, they are a nursery for the oceans. Their roots entwine and form a shelter for the fish and mollusks that come to breed. Mangroves protect the coasts from hurricanes, tidal waves and erosion by the sea. Whole peoples depend on the them.

Yet, they were reduced by half during the twentieth century.

One of the reasons for the ongoing disaste is these shrimp farms installed on the Mnagroves’ rich waters. Ventilators aerate pools full of antibiotics to prevent the asphyxiation of the shrimps, not that of the mangroves.

Since the 1960s, deforestation has constantly gathered pace.

Every year, 13 million hectares of tropical forest---an area the size of Illinois---disappear in smoke and as lumber. The world’s largest rain forest, the Amazon, has already been reduced by twenty percent. The forest gives way to cattle ranches or soybean farms. Ninety five per cent of these soybeans are used to feed livestock and poultry in Europe and Asia.

And so, a forest is turned into meat.

When they burn, forests and their soils release huge quantities of carbon, accounting for twenty per cent of the green house gases entitled across the globe.

Deforestation is one of the principal causes of global warming. Thousands of species disappear forever.

With them, one of the links in a long chain of evolution snaps.

The intelligence of the living matter from which they came is lost forever.(music)

(未完待续)

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