沙质荒漠化土地景观分类与制图—以毛乌素沙地为例

对景观分类理论和方法进行了探索，并以毛乌素沙地为研究对象，提出了一套适用于农牧交错区沙质荒漠化土地景观分类与制图的方法。由于沙丘分布广泛，与地带性植被和土壤的分布相迭加，增加了地表景观的破碎程度，使农牧交错区沙地的主要景观要素类型在结构上具有复合性。为了更好地描述沙地景观的复合性特征，作者提出景观基本结构组分的概念。首先确定景观基本结构组分，根据景观基本结构组分的不同组合确定景观要素类型；然后在野外调查的基础上，通过对遥感数据的解译和判读进行景观要素类型的划分；最后在GIS支持下成图。该方法对我国北方农牧交错区沙质荒漠化土地具有普遍意义。

Landscape Classification and Cartography of Sandy Desertified Land: A Case Study in the Mu Us Sandy Region

A set of methodologies for landscape classification and cartography of sandy and desertified land in arid and semi-arid areas are suggested. Firstly, the basic pattern elements of landscape are determined and landscape elements classified according to the combination of basic pattern elements. Secondly, the classification of landscape elements is made through field investigation and interpretation of remotely-sensed imagery. Finally, with the help of GIS landscape map was completed. This method was applied to the landscape classification and cartography of the Mu Us sandy land using 1:200 000 TM images with results indication universal applicalility to transitional zone farming and grazing areas of north China.