陕北黄土高原土地类型区域分异规律遥感分析

陕北黄土高原地形破碎、交通不便、土地利用不合理、水土流失严重、生态环境脆弱。为了扭转这种局面,必须查清区内土地资源的类型及其分布状况,以便合理地评价和利用土地资源,改善当地的经济状况和生态环境。 本文以陕北11个县(市)为例,对利用TM图像进行1:10万土地类型遥感调查与制图的工作方法和程序进行了讨论,对区内土地类型区域分异因素和分异规律进行了分析,并在此基础上,提出了土地类型分区及分区治理措施的建议。

Remote Sensing Analysis on the Regional Differentiation of Land Types in the Loess Plateau of the North Shaanxi Province

The study area is situated in the Loess Plateau of the north Shaanxi province, with severely dissected landform, diffcult transportations, irrational land-use, serious soil erosion and frail ecological environment. In order to change this situation, it is necessary to survey the land types and their distribution, which is the basis to evaluate and utilize the land resources rationally.In this paper, the methods and procedure of surveying land types and mapping (1: 100000) using TM imagery are discussed. The distributing regularity of the land type and the factors of forming the regional differentiation of the land types in this area are analyzed. Finally, the regionalization of land types and the measures to manage the regions are put forward.