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3 4、6、8月遥感影像及提取的林带信息特征

Fig.3 Remote sensing image and extraction of shelterbelts from April， June and August