Background In the coming period, the intensity of development and construction in China will remain at a high level, and there is a long way to go to prevent and control anthropogenic soil and water loss. In order to achieve the classification and differential control of anthropogenic soil and water loss, it is urgent to carry out research on the risk assessment and classification supervision of anthropogenic soil and water loss in production and construction projects.

Methods On the basis of defining the risk of anthropogenic soil and water loss, based on previous research results, combined with practical experience, and combining qualitative and quantitative methods, this paper put forward the risk assessment method of anthropogenic soil and water loss for production and construction projects. The risk level were determined by combing the potential risk assessment of soil & water loss and evaluation of soil & water conservation during construction. The completed projects mainly determined the risk level based on the evaluation of soil and water conservation. Taking Wuhan as an example, the method was used to assess the risk of 117 production and construction projects at the city level.

Results The production and construction projects in Wuhan were mainly risk-free, accounting for 66.7% of the total number of projects. The second was low-risk level, accounting for 25.6% of the total number of projects. The medium-, high- and very high-risk levels accounted for only 2.6%, 1.7% and 3.4% of the total number of projects, respectively. Among them, the high-risk level and extremely high-risk level projects were mainly due to the failure to carry out soil and water conservation monitoring in time while the project started, and the lack of implementation of soil and water loss prevention measures has issued rectification documents. On this basis, in accordance with the overall requirements of "No risk do not disturb, low risk pre-warning, medium-high risk strict monitoring", combined with other needs of project management, the specific suggestions for the differential classified supervision of the production and construction projects in Wuhan were put forward.

Conclusions Through the analysis of typical cases, the evaluation results are consistent with the actual situation, which proves that the risk assessment method of anthropogenic soil and water loss for production and construction projects proposed in this paper is scientific and feasible, and it is of great significance in supporting the classified supervision of production and construction projects. In the actual formulation of the regulatory program, the assessment of risk magnitude and level is an important foundation and basis, but it should be considered in conjunction with the relevant regulatory provisions and other needs.