Table 3. Planted area and production changes for rice between 1979 and 2009 for different regions in the conterminous China.

Regions	Area (Kha)				Production (Kt)
	1979	% of China	2009	% of China	1979	% of China	2009	% of China
Northeastern China	841.73	2.49	3777.90	12.75	3860.00	2.69	25855.00	13.25
Northern China	264.07	0.78	204.40	0.69	1165.00	0.81	1343.00	0.69
Northwestern China	315.27	0.93	281.70	0.95	1305.00	0.91	1993.00	1.02
Central China	7639.13	22.55	6703.60	22.63	34260.00	23.83	46215.00	23.69
Eastern China	12926.33	38.16	9808.60	33.11	56230.00	39.12	64984.00	33.31
Southwestern China	4803.73	14.18	4448.10	15.01	21440.00	14.91	31214.00	16.00
Southern China	7082.40	20.91	4402.40	14.86	25490.00	17.73	23499.00	12.04
Total	33872.67	100.00	29626.70	100.00	143750.00	100.00	195103.00	100.00