南方土壤侵蚀对持续农业的影响及其潜在危险

Effects of Soil Erosion on Sustainable Agriculture and Its Potential Risks in Southern China

本文探讨了土壤侵蚀加速土壤贫瘠化、砂质化和石质化过程,对降低土地生产力,毁坏土壤资源,带来严重的泥沙危害,并对南方山区持续农业发展以及大型水利工程建设构成极大的威胁.指出南方土壤侵蚀的潜在危害大于北方黄土地区.提出了针对性的防治对策和措施,其中包括多途径解决农村能源问题和水土保持必须与开发利用密切结合的问题.

South part of China is one of the regions suffering from the most severe soil erosion in our country. This paper expounds the effects of soil erosion (accelerated erosion)on soil degradation,soil sandification and Lithified. Soil erosion not only bring about many sided harm to land resources, but also seriously hinders the development of sustainable agriculture,forestry,animal husbandry and hydrological works. In this paper the potential risks of soil erosion have been described based on the analyses of natural and economical conditions in south part of China. It also designates that soil erosion potential risks in south part of China are much more seriously than in the loess plateau because of its very severely shallow soils. Finally,in the paper the strategy and countermeasures against soil erosion have been suggested.