Labor force estimation methods
| Estimation method | Description | Model | Advantages and disadvantages | References | Adopt or not |
|---|---|---|---|---|---|
| Per capita cultivated land method | It is a method to estimate the demand for agricultural labor force according to the area of cultivated land that is affordable for each worker in the area to be assessed | Number of agricultural labor force = total cultivated land area/average cultivated land area borne by each labor force | The calculation is simple, but it can only calculate the number of labor force in the primary industry, and the dynamics of the arable area burdened by labor on average changes significantly as mechanization increases | Zhang (2019) | No |
| Output value proportion method | Assuming that the labor productivity of the agricultural industry is equal to the social productivity, the current agricultural labor quantity is estimated by the total social labor quantity and economic development level | Number of agricultural labor force = agricultural added value/(GDP/total social labor force) | Indicators are easy to obtain, but agriculture and forestry are weak industries, and the output value created by labor is not equivalent to that of secondary and tertiary industries | Wang and Zhao (2016) | No |
| Man-day calculation method | The labor demand is calculated by calculating the ratio of total labor man-days to full employment working hours | Number of agricultural labor force = sum of man-days required for production of various crops/full employment working hours of the year | This method has clear calculation connotation and small error, but the calculation amount is large and the calculation method is complex, and it is necessary to investigate the labor consumption of all crops, and the operability is poor | Sun and Huo (2019) | Yes |
| Production function method | Based on the production function model, the actual labor force required under the optimal allocation of capital and labor is determined according to the goal of maximizing income in the economic system | Build production function Number of labor force = F (land factor, labor factor, capital factor, other influencing factors) | This method has good coherence, but you need to overcome the limitations of the production function itself | Shi and Shi (2021) | Yes |
| Estimation method | Description | Model | Advantages and disadvantages | References | Adopt or not |
|---|---|---|---|---|---|
| Per capita cultivated land method | It is a method to estimate the demand for agricultural labor force according to the area of cultivated land that is affordable for each worker in the area to be assessed | Number of agricultural labor force = total cultivated land area/average cultivated land area borne by each labor force | The calculation is simple, but it can only calculate the number of labor force in the primary industry, and the dynamics of the arable area burdened by labor on average changes significantly as mechanization increases | No | |
| Output value proportion method | Assuming that the labor productivity of the agricultural industry is equal to the social productivity, the current agricultural labor quantity is estimated by the total social labor quantity and economic development level | Number of agricultural labor force = agricultural added value/(GDP/total social labor force) | Indicators are easy to obtain, but agriculture and forestry are weak industries, and the output value created by labor is not equivalent to that of secondary and tertiary industries | No | |
| Man-day calculation method | The labor demand is calculated by calculating the ratio of total labor man-days to full employment working hours | Number of agricultural labor force = sum of man-days required for production of various crops/full employment working hours of the year | This method has clear calculation connotation and small error, but the calculation amount is large and the calculation method is complex, and it is necessary to investigate the labor consumption of all crops, and the operability is poor | Yes | |
| Production function method | Based on the production function model, the actual labor force required under the optimal allocation of capital and labor is determined according to the goal of maximizing income in the economic system | Build production function | This method has good coherence, but you need to overcome the limitations of the production function itself | Yes |
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