That's because freshwater ecosystems are so closely linked to human activity.
这是因为淡水生态系统和人类活动密切相关。
All the freshwater ecosystems can be found within a watershed-a set of habitats that drain into a single body of water such as a big lake or the ocean.
所有这些淡水生态系统可以在一个分水岭中被发现—那是一套可以把比如大湖泊或者海洋这样单一的水域排干的栖息地。
Areas like this, where freshwater meets the ocean, create dazzlingly diverse ecosystems called estuaries.
在这样的地区里，淡水湖与海洋相遇，创建了一个名为河口的多种多样、光辉灿烂的生态系统。
He noted that while freshwater is essential to humans and ecosystems, the rain is falling in all the wrong places, for all the wrong reasons.
他提到，淡水既是人类的根本也是生态系统的基础，但雨水正因所有错误的原因下到了错误的地方。
Other freshwater and terrestrial ecosystems have been degraded by pollution.
其他淡水和陆地生态系统也因污染而退化。
Water is the basis of life, and on this planet only a tiny share—less than one percent of all water—is available for nearly 7 billion people and a myriad of freshwater aquatic ecosystems.
水，乃生活之本。在这个星球上，只有极少的一部分水——占不足全部水体的百分之一——服务于近70亿的人口以及无数的淡水水生态系统。
Water is the basis of life, and on this planet only a tiny share—less than one percent of all water—is available for nearly 7 billion people and a myriad of freshwater aquatic ecosystems.
水，乃生活之本。在这个星球上，只有极少的一部分水——占不足全部水体的百分之一——服务于近70亿的人口以及无数的淡水水生态系统。
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