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| Variables | Variable definition and assignment | Mean value | Variance |
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| Change of breeding scale | had been reduced a lot = 5 had been reduced a little = 4 had not been changed = 3 had been increased some = 2 had been increased a lot = 1 | 2.63 | 1.37 |
| Gender of interviewee | Male = 1, female = 0 | 0.39 | 0.46 |
| Age of interviewee | Age of interviewee | 36.58 | 12.21 |
| Health status of interviewees | “Excellent” = 5 “Good” = 4 “Average” = 3 “Bad” = 2 “Worse” = 1 “Incapacity to work” = 0 | 1.83 | 0.91 |
| Education level of the interviewee | “College degree or above” = 5 “High school education” = 4 “Junior high school education” = 3 “Primary school education” = 2 “Illiteracy” = 1 | 2.09 | 1.14 |
| Number of family labor force | Number of family labor force | 2.52 | 0.93 |
| Total household income in 2018 | (Total household income in 2018 − mean value)/mean value | 0.00 | 0.76 |
| Credit situation | Access to credit: access to loans from commercial banks, rural credit cooperatives, and other organizations Yes = 1; No = 0 | 0.12 | 0.28 |
| Grassland area | Family owned grassland area | 4.38 | 3.76 |
| Grassland quality | Excellent = 5 Good = 4 Average = 3 Bad = 2 Worse = 1 | 1.67 | 0.95 |
| Number of mutton sheep | Total number of domestic mutton sheep in 2018 | 108.34 | 94.52 |
| Housing structure | Soil mixing = 1 Wood mixing = 2 Brick = 3 One floor frame structure = 4 Two floors frame structure = 5 | 2.26 | 1.01 |
| Number of household appliances and technology products | One type = 1 Two types = 2 Three types = 3 Four types = 4 Over five types = 5 | 2.45 | 2.12 |
| Relationship with relatives and friends | Worse = 1 Bad = 2 General = 3 Good = 4 Very close = 5 | 3.21 | 3.48 |
| Experience of village cadres | Yes = 1 No = 0 | 0.06 | 0.16 |
| Cooperative participation | Yes = 1 No = 0 | 0.12 | 0.41 |
| Policy cognition | Very familiar with the bonus and subsidy policy = 5 Quite understanding = 4 General understanding = 3 Quite not understanding = 2 Have no idea = 1 | 3.18 | 2.27 |
Satisfaction with grassland subsidy policy, very satisfied = 5 Relatively satisfied = 4 Generally satisfied = 3 Relatively dissatisfied = 2 Disappointed = 1 | 3.09 | 1.58 |
| Cognition of ecological environment | Fences make the breeding less transferred and make the grassland under great ecological pressure Very disagree = 1 Less agree = 2 Average = 3 Quite agree = 4 Very agree = 5 | 3.31 | 2.19 |
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