. 2020 Jul 15;117:106705. doi: 10.1016/j.ecolind.2020.106705

Table 2.

Main socioeconomic and attitudinal variables of respondents.

Variables	Description	Proportion	Sample average	Statistical average
Socio-economic characteristics
Gender	Male.	65.57		54.21^a
	Female	34.43		45.79
Age	Under 20 years old	0.23	47.78^b	43.74^b
	20–29 years old	4.22
	30–39 years old	18.03
	40–49 years old	31.85
	50–59 years old	28.57
	Above 60 years old	17.10
Nation	Mongolian nationality	52.22		17.11^c
	Han nationality	47.78		79.54
Education	Primary and below	42.62		43.89^d
	Junior middle school	40.28		46.55
	High School	13.11		7.32
	College and above	3.98		2.25
Income(in RMB)	<5000	4.74	25600. 51	28376^e
Income(in RMB)	5000–10000	11.61
	10000–30000	56.64
	30000–50000	20.38
	50000–100000	5.69
	>100,000	0.95
Environmental Attitudinal Characteristics
Environmental cognition	Mean scores of four environmental awareness questions (1–5)		4.33	—
Environmental importance	Importance of grassland ecological environment improvement to respondents' families (0–10)		9.11	—

^{a, d}

Source: The main data bulletin of the third regional agricultural and animal husbandry census of Inner Mongolia Autonomous Region (No. 5); ^b Median age: The median age is shown here because of differences in the age segments of the statistics; ^c Source: The main data bulletin of the Sixth National Population Census of Inner Mongolia Autonomous Region; ^e Source: The Statistical Bulletin of National Economic and Social Development of Inner Mongolia Autonomous Region in 2018, and use the per capita annual income.