排水和不排水草甸土壤水分动态

IF 1.7 4区农林科学 Q4 SOIL SCIENCE

Soil and Water Research Pub Date : 2021-10-20 DOI:10.17221/51/2021-swr

J. Vopravil, P. Formánek, J. Janků, T. Khel

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引用次数: 1

摘要

瓷砖排水是捷克共和国最重要的改善措施之一。据推测，它可以改善一些受地下水及其水状况影响的土壤性质。就草甸而言，所采用的管理方法也可能影响土壤性质。在这项研究中，在捷克共和国Železná村(温和寒冷潮湿的气候区)附近不同管理的草甸(排水与不排水)中，研究了深度为15、35或40和60 cm的不同土壤物理性质(颗粒和体积密度、土壤总孔隙度、最大毛管水量、最小空气容量、保水能力和饱和含水量、体积含水量和基质势)。排水的草甸主要用于放牧(广泛)，不排水的草甸每年割两次草。此外，估算了2018年植被季的实际蒸散量。不同草甸土壤物理性质的选择差异显著(P < 0.05)，特别是在0 ~ 28 cm与0 ~ 35 cm深度(颗粒密度、容重、土壤总孔隙度、毛管最大含水量、保水能力和饱和含水量)和28 ~ 49 cm与35 ~ 45 cm深度(颗粒密度、保水能力和饱和含水量)。在所有研究土壤深度下，2016-2019年各实验草甸的体积含水量和基质电位差异显著(P < 0.05)。不同草甸间的实际蒸散量也存在显著差异(P < 0.05)。实测土壤性质与估算实际蒸散量之间的差异可能受到使用的排水方式和草甸管理方式的影响。有必要获得更多关于排水草甸和不排水草甸不同类型管理的研究成果，以了解两种处理(排水，管理)的作用。

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Soil water dynamics in drained and undrained meadows

Tile drainage belongs to one of the most important meliorative measures in the Czech Republic. It has been hypothesised that it may improve some soil properties which are influenced by the groundwater and their water regime. In the case of meadows, the used management method may also influence the soil properties. In this study, different physical soil properties (particle and bulk density, total soil porosity, maximum capillary water capacity, minimum air capacity, water retention capacity and saturated water content, volumetric water content and matric potential) at depths of 15, 35 or 40 and 60 cm in differently managed meadows (drained versus undrained) located near the village of Železná in the Czech Republic (mildly cold, humid climatic region) were investigated. The drained meadow is used mainly for grazing (extensively) and the undrained meadow is mown twice a year. In addition, the actual evapotranspiration was estimated for the 2018 vegetation season. The selected physical soil properties were significantly (P < 0.05) different between the experimental meadows, especially at depths of 0–28 versus 0–35 cm (particle and bulk density, total soil porosity, maximum capillary water capacity, water retention capacity and saturated water content) and 28–49 versus 35–45 cm (particle density, water retention capacity and saturated water content). In the case of all the studied soil depths, the volumetric water content and matric potential were significantly (P < 0.05) different between the experimental meadows in the years 2016–2019. The actual evapotranspiration was also significantly different (P < 0.05) between the meadows. The obtained differences in the measured soil properties and estimated actual evapotranspiration were probably influenced by the used tile drainage and also by the type of management of the meadow. It is necessary to obtain more research findings with respect to different types of management in the case of drained meadows and also undrained meadows to understand the role of both treatments (tile drainage, management).

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来源期刊

Soil and Water Research Water resources, Soil Science, Agriculture-WATER RESOURCES

CiteScore

4.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： An international peer-reviewed journal published under the auspices of the Czech Academy of Agricultural Sciences and financed by the Ministry of Agriculture of the Czech Republic. Published since 2006. Thematic: original papers, short communications and critical reviews from all fields of science and engineering related to soil and water and their interactions in natural and man-modified landscapes, with a particular focus on agricultural land use. The fields encompassed include, but are not limited to, the basic and applied soil science, soil hydrology, irrigation and drainage of lands, hydrology, management and revitalisation of small water streams and small water reservoirs, including fishponds, soil erosion research and control, drought and flood control, wetland restoration and protection, surface and ground water protection in therms of their quantity and quality.