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

Table 3

Conversion between farmland and other land-use categories from the late 1980s to 2008.

Humid region	Conversion from farmland to urban area		Conversion from farmland to other land		Conversion from other land uses to farmland
	Area (ha)	Percent (%)	Area (ha)	Percent (%)	Area (ha)	Percent (%)
Humid	2,832,457	74.4	10,179,839	67.5	11,843,001	62.1
Semiarid	726,516	19.1	3,668,100	24.3	4,542,250	23.8
Arid	249,596	6.6	1,232,730	8.2	2,693,450	14.1
Total	3,808,569	100	15,080,669	100.0	19,078,701	100.0