像元坡度新算法的初步研究

Preliminary Study On the New Algorithm of Pixel Slope

介绍了像元坡度新算法的原理、应用程序和应用结果,并对各算法的应用结果作了分析讨论。新算法比现有算法更具合理性、可靠性和适应性,最宜于在土壤侵蚀量遥感监测中应用。其它算法则不宜选用,也许它们较适宜于其它应用目的,如加权平均的9点法宜用于土地资源平整度的评价。

The principle applied courses and results of new algorithm of pixel slope in the GIS are introduced and the applied results of existent seven algorithms are also discussed. New algorithm is more reasonable,more reliable and has better adaptability and it is more suita- ble than existent algorithms in monitoring soil annual loss by remote sensing and GIS.Al- though fitting algorithm of nine point to curved plane in existent algorithms in more suitable,its run amount is bigger and not more conveniet than new algorithm.The existent algorithms are not suitable in monitoring soil loss,however they may be suitable in other applied tasks (e.g.evaluating tasks of even degree on land resources).