The root cause of the cumulative impacts of cropland index and carrying capacity on desertification is the increasing pressure on environment and resource due to increasing population.

人口持续增长导致的对资源环境压力的增大是耕地指数和草场载畜量对沙漠化影响产生累加效应的根本原因。

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In this paper the author summarizes the severest resource and environment situations in the history of China, which carries the largest population in the world and has enormous activity.

文章概述了我国正以历史上最为严峻的资源、环境状况，承载着世界上为数最多的人口群及其惊人的活动能力。

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With the rapid increase of population, humans consume a huge amount of water resource as well as destroy the water resource environment. Thus, the global water resource is decreasing now.

随着人口的不断增加，人类不但消耗大量水资源，而且还严重破坏资源环境，使全球及我国水资源量日益减少。

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