河西走廊酒泉绿洲农田防护林格局与结构

吕王亦庄, 赵文智

The structure and pattern of farmland shelterbelts in Jiuquan Oasis of Hexi Corridor

Wangyizhuang Lv, Wenzhi Zhao

图7 防护林结构核密度分布

Fig.7 Nuclear density distribution of shelterbelts structure