Trends in Moisture Index, Farmland Area, and Their Combined Effects on Grain Production in Northern China

Table 2

Area of farmland in humid, semiarid, and arid zones in northern China.

Humidity region	The late 1980s		2008
	Area (ha)	Percent (%)	Area (ha)	Percent (%)
Humid	70,778,220	72.0	52,196,864	51.0
Semiarid	20,403,300	20.8	40,440,571	39.5
Arid	7,088,430	7.2	9,663,439	9.4
Total	98,269,950	100	102,300,874	100