Automated catena‐based discretization of landscapes for the derivation of hydrological modelling units
Automated catena‐based discretization of landscapes for the derivation of hydrological modelling units
复制标题
基于链式的自动景观离散化，用于推导水文建模单元
DOI：
10.1080/13658810701300873
复制
发表时间：
2008
影响因子：
5.7
通讯作者：
A. Bronstert
中科院分区：
文献类型：
--
作者：
T. Francke;A. Güntner;G. Mamede;Eva Müller;A. Bronstert
在大空间尺度的水文和土壤侵蚀建模中，半分布式方法可以使用代表性的山坡剖面来再现景观变异性。到目前为止，划定景观单元的过程中，就其地形，植被和土壤特性的景观均匀的部分，需要专业知识和熟悉的研究领域。此外，描绘程序往往非常耗时，并且具有高度的主观性。本文提出了一种新的，半自动化的方法来划分景观单元，代表性的地形序列的推导，并将其划分为地形成分。它采用了一种算法，以检索代表性的连锁店及其属性的基础上海拔和其他关键的空间数据经常需要作为环境模型的输入，如植被和土壤数据的基本山坡地区。在西班牙的Ésera集水区的一个示例应用程序表明，与所提出的方法，放大的山坡属性成为可行的环境建模在大尺度上，同时确保可重复的结果。
In hydrological and soil erosion modelling at large spatial scales, semi‐distributed approaches may use representative hillslope profiles to reproduce landscape variability. Until now, the process of delineating landscape units as homogeneous parts of the landscape with regard to their terrain, vegetation, and soil properties required expert knowledge and familiarity with the study area. In addition, the delineation procedure was often highly time‐consuming and included a high degree of subjectivity. This paper presents a novel, semi‐automated approach for the delineation of landscape units, the derivation of representative toposequences, and their partitioning into terrain components. It incorporates an algorithm to retrieve representative catenas and their attributes for elementary hillslope areas based on elevation and other key spatial data frequently required as environmental model input, e.g. vegetation and soil data. An example application for the Ésera catchment in Spain illustrates that with the presented approach, upscaling of hillslope properties becomes feasible for environmental modelling at large scales while ensuring reproducible results.