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

Variable	ADF statistic	5% threshold	P-value	Test results
lnnon-grain production	‒2.502	‒3.000	0.1150	Non-stationary
lnenergy	‒1.573	‒1.708	0.0642	Non-stationary
lnprotein	‒1.083	‒1.721	0.1456	Non-stationary
lnfat	‒1.190	‒1.721	0.1236	Non-stationary
lndietary fibre	‒1.261	‒1.708	0.1095	Non-stationary
lncalcium	‒1.473	‒1.740	0.9205	Non-stationary
lncarbohydrate	‒0.715	‒1.721	0.2411	Non-stationary
∆lnnon-grain production	‒3.597	‒2.994	0.0058	Stationary
∆lnenergy	‒2.281	‒1.725	0.0168	Stationary
∆lnprotein	‒1.882	‒1.717	0.0365	Stationary
∆lnfat	‒2.902	‒1.725	0.0044	Stationary
∆lndietary fibre	‒5.070	‒3.588	0.0002	Stationary
∆lncalcium	‒3.988	‒1.711	0.0003	Stationary
∆lncarbohydrate	‒3.332	‒1.725	0.0017	Stationary

Table 3 ADF unit root test

本文的其它图/表

Table 1 Dietary nutrient content of various foods
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 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