摘要
美国的土壤侵蚀经过60年的治理得到了明显的减轻，但还存在一些问题，土壤侵蚀形势依然严峻。60年来美国开展了大量的土壤侵蚀治理项目，土壤保护经历了由注重减轻田间土壤侵蚀、增加土壤生产力到注重减轻土壤侵蚀对环境影响的转变。这对中国的土壤保护有一定的启示作用。
Although the reduction of soil erosion in the United States is obvious after 60-year treatment, there are still some problems. The soil conservation in the United States shifted the emphasis on reducing soil erosion for increasing the productivity of fields onto reducing the effect of soil erosion on environment in 1970's. Their experience of soil conservation gives us some enlightenment.
出处
《国土与自然资源研究》
2000年第4期75-78,共4页
Territory & Natural Resources Study
关键词
美国
土壤保护
启示
United States
soil conservation
enlightenmenty
