CAJ | 학술논문

为了在精细尺度下定量刻画地形特征,给地理建模提供更准确的定量地形参数,克服当今应用领域中常用商业软件的局限性,本研究讨论了面向栅格DEM 的"简化数字地形分析软件"(SimDTA 1.0版本).SimDTA实现了诸多计算局域和区域地形属性、定量描述地形部位信息的现有算法,以及新建算法.例如,针对一个实际的应用问题--坡位模糊分类,采用以坡位典型位置作为原型的新思路,在SimDTA中,实现了一个新的坡位模糊分类方法,能够克服现有其他方法忽略空间位置信息等问题.这一坡位模糊分类方法和SimDTA中实现的其他功能相结合,形成了一套完整的坡位模糊分类流程.本文通过在东北嫩江流域一个小区的实际应用和讨论来体现SimDTA的有效性和实用性.
위료재정세척도하정량각화지형특정,급지리건모제공경준학적정량지형삼수,극복당금응용영역중상용상업연건적국한성,본연구토론료면향책격DEM 적"간화수자지형분석연건"(SimDTA 1.0판본).SimDTA실현료제다계산국역화구역지형속성、정량묘술지형부위신식적현유산법,이급신건산법.례여,침대일개실제적응용문제--파위모호분류,채용이파위전형위치작위원형적신사로,재SimDTA중,실현료일개신적파위모호분류방법,능구극복현유기타방법홀략공간위치신식등문제.저일파위모호분류방법화SimDTA중실현적기타공능상결합,형성료일투완정적파위모호분류류정.본문통과재동북눈강류역일개소구적실제응용화토론래체현SimDTA적유효성화실용성.
This paper proposed a digital terrain analysis (DTA) software that mainly uses gridded DEM, I.e. Simple Digital Terrain Analysis Software (SimDTA, version 1.0). Overcoming some limitations in applying common commercial software related to DTA, SimDTA was designed to quantify terrain characterization on a finer scale and provide accuracy for terrain parameters for geographic modeling. Besides many widely-used DTA algorithms, a lot of new algorithms of local topographic attributes, regional topographic attributes, and quantification of slope positions were also implemented in SimDTA. For example, aiming at a practical problem in DTA (I.e., fuzzy classification of slope positions), we developed a new method for fuzzy classification of slope positions by adopting a new idea in which typical locations of slope positions are used as prototypes and therefore the problems (such as ignorance of spatial information) in former methods can be dealt with. Furthermore, a workflow for fuzzy classification of slope positions was established by implementing this new method and combining it with other functions in SimDTA. This paper used a real application in a small catchment in Nenjiang watershed, Northeast China to show the validity and practicality of SimDTA.