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长江、珠江上游地区山高谷深,岩石深厚,土层浅溥,河流下蚀强烈,加之降雨多、强度大,与北方地区相较具有截然不同的水土流失特点。这里土壤侵蚀严重,石化面积日益扩大,滑坡、泥石流和山崩分布广、频率高、流失量大.其潜在的威胁已危害到国民经济的发展.此外,近年来,大规模的采矿和基建活动,在管护工作没有赶上的情况下,水土流失剧烈增长.重视和加强这一地区的治理和管护工作,具有极为重要的意义.
In the upper reaches of the Yangtze River and Pearl River, there are deep valleys and valleys, deep rocks, shallow soil layers and intense erosion beneath the rivers. In addition to the rainfall, the intensity is large and has quite different characteristics of soil and water loss compared with the northern areas. Due to the serious soil erosion and increasing petrification area, landslides, mudslides and landslides are widely distributed with high frequency and large amount of loss, and their potential threats have jeopardized the development of the national economy. In addition, in recent years, large-scale mining and infrastructure activities, In the case that the management and protection work did not catch up, the soil and water loss increased drastically, and it was extremely important to pay attention to and strengthen the governance and management in this area.