资源与生态学报

居民膳食结构升级对耕地非粮化的影响

陈倩茹, 吴曼玉, 曾宏琛, 罗世龙

资源与生态学报, 2023, 14(6): 1350-1360. DOI: 10.5814/j.issn.1674-764x.2023.06.022

Primary classification	Secondary classification	Energy (kcal)	Protein (g)	Fat (g)	Carbohydrate (g)	Dietary fibre (g)	Calcium (mg)
Plant-based food	Grain	346	7.9	0.9	77.2	0.6	8
	Edible vegetable oil	899	0	99.9	0	0	9
	Fresh vegetables	20	1.6	0.2	3.4	0.9	57
	Fresh fruits and melons	53	0.4	0.2	13.7	1.7	4
Animal products	Meat and products	210	17.9	15.1	0.7	0	9
	Poultry	145	20.3	6.7	0.9	0	13
	Aquatic products	103	16.6	3.3	1.6	0	58
	Eggs	139	13.1	8.6	2.4	0	56
	Milk and dairy products	65	3.3	3.6	4.9	0	107

Table 1 Dietary nutrient content of various foods

本文的其它图/表

Table 2 Selection of variables and their meanings
Fig. 1 Changes in the non-grain production rate from 1992 to 2021
Fig. 2 Per capita food consumption structure of residents, 1992?2021
Fig. 3 Changes in per capita daily consumption of protein, fat, and energy among Chinese residents during 1992?2021
Fig. 4 Changes in per capita daily consumption of calcium, calbohydrate, and dietary fibre among Chinese residents during 1992?2021
Table 3 ADF unit root test
Table 4 Selecting the optimal lag order
Table 5 Johansen cointegration test results
Fig. 5 AR stationarity test
Fig. 6 Impulse responses of non-grain production to dietary nutrients
Note: In each graph, the horizontal coordinate is the number of lag periods, the vertical coordinate is the size of the response value, the solid line is the change trend of the response function, and the middle range of the dashed lines is the confidence interval. CI means confidence interval; IRF means impulse response function.
Table 6 Results of variance decomposition