Ecoefficiency of Intensive Agricultural Production and Its Influencing Factors in China: An Application of DEA-Tobit Analysis

Table 3

Statistical description of input-output indicators in 31 provinces.

Indicator	Unit	Obs.	Min.	Max.	Mean	Std. dev.
Agricultural land area	10^3 hm^2	31	264.94	11890.26	4306.67	2799.88
Total employed persons	10^4 persons	31	36.30	2711.70	909.91	694.10
Power of agricultural machinery	10^4 kw	31	112.70	12419.90	3308.36	3065.86
Pesticide consumption	t	31	963.00	164812.00	57645.19	46429.94
Chemical fertilizer consumption	10^4 t	31	4.80	673.70	184.01	149.25
Diesel oil consumption	10^4 t	31	3.90	290.90	68.00	63.46
Gross output value of agriculture	10^8 yuan	31	53.40	3960.60	1514.21	1097.84
Ammonia nitrogen emission	t	31	140.00	13737.00	4889.19	3927.66
Total nitrogen emission	t	31	1453.00	261322.00	50908.55	53365.31
Total phosphorus emission	t	31	79.00	13730.00	3506.90	3070.60