水利部部长陈雷29日表示,随着全球气候变化和人类活动影响的加剧,许多国家在江河治理、防洪减灾、水资源开发利用、生态环境保护等方面都面临着泥沙问题的严峻挑战,泥沙问题已成为全球性难题。我国水土流失面积达356万平方公里,年平均土壤侵蚀量高达45亿吨,损失耕地约100万亩。 Minister of Water Resources Chen Lei said on the 29th that with the global climate change and the intensification of human activities, many countries are facing severe challenges of sediment control in such aspects as river management, flood control and disaster mitigation, water resources development and utilization, and ecological environment protection. Mud The sand issue has become a global problem. China’s soil erosion area of ​​3.56 million square kilometers, the annual average soil erosion as high as 4.5 tons, about 1000000 acres of arable land loss.