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| Topsoil protection and utilization in production and construction projects |
| Zhang Zhenchao1, Zhang Linlin1,2, Wang Dongmei1, Ma Bin3 |
| 1.School of Soil and Water Conservation of Beijing Forestry University,100083,Beijing,China; 2.Water & Land(Beijing) Eco-Environment Institute,100080,Beijing,China; 3.Soil and Water Conservation Bureau of Ningxia Water Resources Department,750001,Yinchuan,China |
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Abstract Topsoil is rich in organic matters, soil enzymes, microorganisms and other substances, and provides nutritions and good environment to supply for and coordinate plant growth. However, with the rapid development of economy, various production and construction projects bring about disturbance to surface soil, resulting in occupation and erosion of a large area of topsoil, which has threatened the ecological and food security. A number of laws and norms such as the new Soil and Water Conservation Law and Soil and Water Conservation Technical Specification of Development and Construction Projects have made specific provision for topsoil protection and utilization in production and construction projects. The disturbance to surface soil should be minimized in production and construction activities, and the topsoil should be stripped in the unavoidable disturbing areas. However, until now, problems of topsoil protection and utilization still exist in the production and construction projects, such as weak consciousness of protection of construction clients, the unsound law and imperfect technology. Accordingly, relevant government departments should establish effective compensation mechanism for topsoil stripping as soon as possible, set the topsoil stripping as the main concern in reviewing soil and water conservation programs, and meanwhile, strengthen the research of topsoil stripping technology. This review summarizes the current studies on topsoil protection and utilization measurements in China and abroad, aiming at providing scientific methods for reducing disturbance to surface soil and rationally utilizing topsoil in production and construction projects in the future.
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Received: 05 May 2014
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