Guidelines and a supporting toolbox for parameterising key soil hydraulic properties in hydrological studies and broader integrated modelling

IF 1.8 Q3 ECOLOGY One Ecosystem Pub Date : 2022-04-19 DOI:10.3897/oneeco.7.e76410
N. Dang, B. Jackson, S. Tomscha, L. Lilburne, Kremena Burkhard, D. Tran, Long Phi, R. Benavidez
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引用次数: 1

Abstract

Information on soil hydraulic properties (e.g. soil moisture pressure relationships and hydraulic conductivity) is valuable for a wide range of disciplines including hydrology, ecology, environmental management and agriculture. However, this information is often not readily available as direct measurements are costly and time-consuming. Furthermore, as more complex representations of soils are being built into environmental models, users and developers often require sound hydraulic property information, while having limited access to specialist knowledge. Although indirect methods have been developed to obtain soil hydraulic properties from easily measurable or readily available soil properties via pedo-transfer functions (PTFs), few articles provide guidance for obtaining soil hydraulic properties over a wide range of geoclimatic and regional data availability contexts. The aim of this study is, therefore, to develop guidelines and an associated spatially referenced toolbox, NB_PTFs, to speed the process of acquiring sensible soil hydraulic properties for different geoclimatic and data-rich/sparse regions. The guide compiles available information about soil hydraulic properties, as well as a large number (151) of PTFs, not collated in any other guidance to date. NB_PTFs is an open-source ArcGIS toolbox which allows users to quickly get values, graphs and spatial distributions of soil hydraulic properties. The soil hydraulic properties, obtained using the guide and the toolbox, can be used as inputs for various models amongst other purposes. To demonstrate the use of the guidelines and the toolbox in different geoclimatic and data-availability contexts, the paper presents two case studies: the Vietnamese Mekong Delta and New Zealand Hurunui catchment. The Vietnamese Mekong Delta shows the use of these guidelines in a tropical, flat location with limited information on soil physical, chemical and hydraulic properties. The Hurunui catchment represents a case study for a semi-arid and hilly area in an area with detailed soil information.
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水文研究和更广泛的综合建模中关键土壤水力特性参数化的指南和支持工具箱
关于土壤水力特性的信息(如土壤水分压力关系和导水率)对包括水文、生态学、环境管理和农业在内的广泛学科都很有价值。然而,由于直接测量成本高昂且耗时,因此这些信息通常不容易获得。此外,由于环境模型中正在构建更复杂的土壤表示,用户和开发商通常需要可靠的水力特性信息,而获得专业知识的机会有限。尽管已经开发了通过土壤传递函数(PTF)从易于测量或易于获得的土壤性质中获得土壤水力性质的间接方法,但很少有文章为在广泛的地理气候和区域数据可用性背景下获得土壤水力特性提供指导。因此,本研究的目的是制定指南和相关的空间参考工具箱NB_PTFs,以加快获取不同地理气候和数据丰富/稀疏区域的敏感土壤水力特性的过程。该指南汇编了有关土壤水力特性的可用信息,以及迄今为止任何其他指南中都没有整理的大量(151)PTF。NB_PTFs是一个开源的ArcGIS工具箱,用户可以快速获得土壤水力特性的值、图形和空间分布。使用指南和工具箱获得的土壤水力特性可作为各种模型的输入以及其他用途。为了证明指南和工具箱在不同的地理气候和数据可用性背景下的使用,本文介绍了两个案例研究:越南湄公河三角洲和新西兰胡鲁努伊流域。越南湄公河三角洲显示了这些指南在热带平坦地区的使用,土壤物理、化学和水力特性方面的信息有限。Hurunui流域是一个半干旱和丘陵地区的案例研究,该地区有详细的土壤信息。
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来源期刊
One Ecosystem
One Ecosystem Environmental Science-Nature and Landscape Conservation
CiteScore
4.60
自引率
0.00%
发文量
26
审稿时长
12 weeks
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