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对公路建设及运营中所引发的土地退化问题的相关研究成果主要集中于公路占地、土壤侵蚀、土壤污染、土壤性质恶化等单方面的分析:土壤侵蚀是重点研究内容,具体包括土壤侵蚀规模、土壤侵蚀机理、土壤侵蚀规律及侵蚀预测方法;土壤污染以重金属污染为主要研究内容,土壤性质恶化则重点关注于土壤理化性质,土壤生物学性质变化研究相对薄弱。我国公路建设及运营所致土地退化问题的研究严重滞后于公路工程建设,今后应强化公路建设及运营过程中的土地退化、演变及恢复研究,公路沿线土壤侵蚀发生发展规律的系统性研究,土壤资源保护与利用研究,公路建设用地节约集约利用技术和标准研究等。
Relevant research results on land degradation caused by highway construction and operation mainly focus on the unilateral analysis of highway land occupation, soil erosion, soil pollution and deterioration of soil properties. Soil erosion is the key research content, including soil erosion scale , Soil erosion mechanism, soil erosion and erosion prediction methods. Soil pollution takes heavy metal pollution as the main research content. The deterioration of soil properties focuses on the soil physical and chemical properties, and the changes of soil biological properties are relatively weak. The study of land degradation caused by highway construction and operation in our country lags behind the construction of highway projects seriously. In the future, we should study the land degradation, evolution and restoration in highway construction and operation, systematically study the occurrence and development of soil erosion along the highway, Research on resource conservation and utilization, research on technologies and standards for intensive use of road construction land, etc.