1) Huo Pan Di
陕北长城外
1.
The Disquisition on Huo Pan Di at the Outside of the Great Wall in the North of Shaanxi in the Qing Dynasty;
清代陕北长城外伙盘地研究
2) outside of the Great Wall in the north of Shaanxi
陕北长城外伙盘地
1.
Spatial-temporal characteristics of land reclamation in HuoPanDi at the outside of the Great Wall in the north of Shaanxi in the Qing Dynasty;
1644至1911年陕北长城外伙盘地垦殖时空特征分析——以榆林金鸡滩乡为例
3) along the Great Wall in northern Shaanxi
陕北长城沿线
1.
Using MSS satellite image data in 1975 and ETM image data in 2000 as r emote sensing information source,we studied the status quo and dynamic change of sandy desertification along the Great Wall in northern Shaanxi through building scientific classification system for sandy desertified land in combination with GIS analysis method.
采用1975年MSS卫星图像、2000年ETM卫星图像为遥感信息源,通过建立科学的沙质荒漠化土地分类体系,并结合地理信息系统方法,对位于农牧交错带生态环境脆弱的陕北长城沿线沙质荒漠化进行了现状及动态变化分析,结果表明,经过20多年来沙质荒漠化防治,现代沙质荒漠化过程得到了明显的逆转,25年间,沙质荒漠化土地面积减少了195。
补充资料：长城
悠久的修建历史,巨大的建筑规模
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