Insight into the variation of soil hydraulic properties under beech and spruce forest—A case study in the forest of Tharandt, NE Germany

IF 2.6 3区 农林科学 Q1 AGRONOMY
Victoria Virano-Riquelme, Karl-Heinz Feger, Stefan Julich
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引用次数: 0

Abstract

Background

The increasing vulnerability of forests in the temperate zone due to climate change has led to modification in the forest structure to secure woody raw materials and ecosystem benefits. Such changes will influence hydrological processes both at the stand and catchment scale. Soil hydraulic properties (SHP) play an important role in assessing the water cycle in these ecosystems. Yet, knowledge regarding the effect of forest- and site-specific conditions on SHP in temperate climates is scarce.

Aims

This work addresses this research gap by assessing the variation of SHP under two common European forest stands, Fagus sylvatica and Picea abies (1) with comparable site conditions, and (2) across differing site conditions.

Methods

We determined the soil water retention curve (WRC) and the hydraulic conductivity curve (HCC) in several plots with the bimodal Kosugi–Mualem's hydraulic model. These functions were determined using combined field and laboratory measurements, including hydraulic conductivity and water content from soil samples.

Results

(1) We observed distinct variations in SHP between beech and spruce forest stands with comparable site conditions; however, no clear pattern in the variation was discernible. (2) A noticeable effect of the site-specific characteristics on the SHP was detected. Moreover, SHP in each analysed forest type presented individual variations.

Conclusions

This study demonstrates that SHP present a wide range of variations in terms of both forest- and site-specific conditions. Hence, due to its heterogeneity, we emphasise the need for more research to better characterise SHP in temperate zone forests. Moreover, this study underlines the urgent use of a minimum set of parameters in studies when addressing SHP (e.g., tree age, soil texture).

Abstract Image

山毛榉和云杉林下土壤水力特性变化透视--德国东北部塔兰特森林案例研究
背景温带地区的森林因气候变化而日益脆弱,这导致森林结构发生变化,以确保木质原材料和生态系统的利益。这种变化将影响林分和流域尺度的水文过程。土壤水力特性(SHP)在评估这些生态系统的水循环方面发挥着重要作用。本研究针对这一研究空白,评估了欧洲两种常见林分 Fagus sylvatica 和 Picea abies(1)在可比地点条件下以及(2)在不同地点条件下的土壤水力特性变化。结果(1)我们观察到,在具有可比立地条件的山毛榉林和云杉林之间,SHP 有明显的差异;但是,这种差异没有明显的模式。(2)我们发现特定地点的特征对 SHP 有明显的影响。结论 本研究表明,SHP 在森林和地点的特定条件下呈现出广泛的变化。因此,由于其异质性,我们强调有必要开展更多的研究,以更好地描述温带森林中 SHP 的特征。此外,本研究还强调,在研究 SHP 时,迫切需要使用一套最低限度的参数(如树龄、土壤质地)。
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来源期刊
CiteScore
4.70
自引率
8.00%
发文量
90
审稿时长
8-16 weeks
期刊介绍: Established in 1922, the Journal of Plant Nutrition and Soil Science (JPNSS) is an international peer-reviewed journal devoted to cover the entire spectrum of plant nutrition and soil science from different scale units, e.g. agroecosystem to natural systems. With its wide scope and focus on soil-plant interactions, JPNSS is one of the leading journals on this topic. Articles in JPNSS include reviews, high-standard original papers, and short communications and represent challenging research of international significance. The Journal of Plant Nutrition and Soil Science is one of the world’s oldest journals. You can trust in a peer-reviewed journal that has been established in the plant and soil science community for almost 100 years. Journal of Plant Nutrition and Soil Science (ISSN 1436-8730) is published in six volumes per year, by the German Societies of Plant Nutrition (DGP) and Soil Science (DBG). Furthermore, the Journal of Plant Nutrition and Soil Science (JPNSS) is a Cooperating Journal of the International Union of Soil Science (IUSS). The journal is produced by Wiley-VCH. Topical Divisions of the Journal of Plant Nutrition and Soil Science that are receiving increasing attention are: JPNSS – Topical Divisions Special timely focus in interdisciplinarity: - sustainability & critical zone science. Soil-Plant Interactions: - rhizosphere science & soil ecology - pollutant cycling & plant-soil protection - land use & climate change. Soil Science: - soil chemistry & soil physics - soil biology & biogeochemistry - soil genesis & mineralogy. Plant Nutrition: - plant nutritional physiology - nutrient dynamics & soil fertility - ecophysiological aspects of plant nutrition.
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