利用遥感图像研究吉林西部的风成地貌及其对农业的影响

STUDY OF AEOLIAN GEOMORPHIC UNIT AND IT' S INFLUENCE ON AGRICULTURE USING REMOTE SENSING IMAGE WEST JILIN

笔者根据遥感图像解译结果，结合地质一地理调查分析认为，吉林西部的一些地形不是风的作 用形成的，如弧形垄岗不是纵沙丘，“坨子”不是古沙丘，而是与构造活动有一定关系。当地的风 成地貌主要是一些发育在垄岗的迎风波及洼地中的小型风蚀浅谷、风蚀残丘、沙丘、土豆等。笔 者根据这些风成地貌的形态、分布特征，探讨了当地风的地质作用的规律及其对农业的影响，最 后笔者对当地农业生产规划提出若干建议。

According to result of remote sensing image interpretation and investigation of geology-geography the auther considers that some topographic- geomorphic units are not of aeolian but related to structural activity such as the arc ridge isn't column dune and the lump isn't old dune. The local aeolian geomorphic unit is chiefly some small-scale deflation shallow valley deflation relic hillock, dune and soil hillock etc. that generate facing wind slope on ridge-mound and in hollow. The author investigates the law of the local aeolian geological precess and it's influence on agriculture according to form and distribution of some the aeolian geomorphic units. Finally the author puts forward some proposals for local agricultural program.