1. Baseline data is the basis of EIA, just like piles in buildings. A good baseline study is helpful to predict and evaluate the potential impact of the project. Conduct baseline survey as required to determine the environmental conditions of the construction site at that time. Let me give you some tips on collecting and investigating the baseline data of EIA research. Baseline investigation usually includes the construction site, site access and other areas that may be affected during construction and operation (or decommissioning).
2. Baseline survey of population birth defects intervention project: the core is the survey of birth defects. In addition, it also includes: the investigation of the causes of birth defects; Investigation on people's understanding of birth defects; Investigate the capabilities of service institutions, such as data collection capabilities, technical service capabilities, standardized management and service capabilities; In other words, the investigation on the current situation of service organizations is called basic investigation or pre-intervention investigation. Its nature is similar to the basic investigation in family planning work.