Soil erosion: A food and environmental threat
Soil erosion: A food and environmental threat
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DOI：
10.1007/s10668-005-1262-8
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发表时间：
2006-01-01
影响因子：
4.9
通讯作者：
Pimentel, David
中科院分区：
文献类型：
--
作者：
Pimentel, David
土壤侵蚀是人类社会面临的最严重的环境和公共健康问题之一。人类99.7%以上的食物（卡路里）来自陆地，不到0.3%来自海洋和其他水生生态系统。每年约有1 000万公顷农田因土壤侵蚀而丧失，从而减少了可用于粮食生产的农田。耕地的丧失是一个严重的问题，因为世界卫生组织报告说，世界上有37亿多人营养不良。土地流失的速度比土壤更新速度快10至40倍，危及未来人类的粮食安全和环境质量。
Soil erosion is one of the most serious environmental and public health problems facing human society. Humans obtain more than 99.7% of their food (calories) from the land and less than 0.3% from the oceans and other aquatic ecosystems. Each year about 10 million ha of cropland are lost due to soil erosion, thus reducing the cropland available for food production. The loss of cropland is a serious problem because the World Health Organization reports that more than 3.7 billion people are malnourished in the world. Overall soil is being lost from land areas 10 to 40 times faster than the rate of soil renewal imperiling future human food security and environmental quality.