In the hilly ground within the middle and north subtropic zone of China,afforestation for industrial timber should be dominated with Pinus taeda,and forest of Pinus ellottii and forest for pine tree resin should be considered appropriately as well.Afforestation density of 1667 plant/hm 2 should be considered for commond ground,1333 plant/hm 2 for some part of high quality ground or high grade prepared zone,and 2000 plant/hm 2 for some part of poorer ground.The first time intermediate cutting can ...