Effects of moss layers on the spatial variation in soil moisture in a <i>Picea crassifolia</i> forest on the north-facing slope of the Qilian Mountains

Bin, 王彬 Wang; Pengtao, 于澎涛 Yu; Shunli, 王顺利 Wang; Yanhui, 王彦辉 Wang; Lei, 张雷 Zhang; Xiande, 刘贤德 Liu; Ming, 金铭 Jin; Xuelong, 张学龙 Zhang

doi:10.5846/stxb201511112282

Cited by 2 publications

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“…The mean annual temperature is −1.5 ℃, with a maximum monthly temperature of 11.0 ℃ in July and a minimum monthly temperature of −14.5 ℃ in January. The average annual precipitation is 600.7 mm, while the mean annual evaporation is approximately 1050 mm (Wang et al, 2017). The soils are grey-cinnamon soils that are equivalent to Andisols according to the USDA Soil Taxonomy (Soil Survey Staff, 2014).…”

Section: Study Area and Plot Descriptionmentioning

confidence: 99%

Structural characteristics of the moss (bryophyte) layer and its underlying soil structure and water retention characteristics

2023

Preprint

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Aims The influence of the moss layer on soil structure and soil water retention is not well understood. Therefore, this study aims to investigate the changes in soil structure and soil water retention under moss layer and to reveal the influencing factors of these changes. Methods 3D networks of soil macropores were quantified using CT scanning and image analysis techniques, and soil water retention characteristics were quantified through soil water retention curves (SWRCs) and VG model. Results The length density of the soil macropores under the thin moss and thick moss layers was approximately 2.7 and 1.6 times higher than that under no moss cover. The soil water retention properties under the thin and thick moss layers were better than those under no moss cover, with the highest plant-available water capacity under the thin moss layer. The plant-available water capacity of soils under the thin moss layer was higher than that of soils under the thick moss layer. The maximum water-holding capacity of the moss layer was significantly positively correlated with the field water-holding capacity of the soil and negatively correlated with the equivalent diameter of the macropores, while the storage capacity of the moss layer was significantly negatively correlated with the maximum effective water content of the soil. Conclusions The effect of the moss layer on water retention may be mainly through influencing the pore distribution and organic matter accumulation. The moss layer had a positive ecohydrological effect on soil water retention and even water conservation in forest soils.

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Section: Study Area and Plot Descriptionmentioning

confidence: 99%

Structural characteristics of the moss (bryophyte) layer and its underlying soil structure and water retention characteristics

2023

Preprint

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Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta Region

Liu

Tang

Cheng

et al. 2021

Water

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Rainfall is an indispensable link in the atmospheric water cycle, which plays a critical role in forest hydrology. Quercus acutissima and Cunninghamia lanceolata are two fast-growing and economically important tree species in the middle and lower reaches of the Yangtze River. They are extensively applied in the restoration of vegetation, hydraulic engineering, and the development of artificial forests. The primary aims of this study were to describe and compare the changes in soil water content following rainfall events, while elucidating their relationships to environmental factors. From September 2012 to August 2013, we monitored the soil moisture at different depths every 30 min using commercially available soil moisture measuring devices. Hourly meteorological data were monitored over an open area at 200 m from the sample site, including photosynthetically active radiation (Par), air temperature (Ta), relative air humidity (RH), vapor pressure deficits (Vpd), rainfall, and wind speed. The results revealed that variations in the soil moisture content during summer (Cv = 0.231) and autumn (Cv = 0.0.170) were greater than during spring (Cv = 0.0.092) and winter (Cv = 0.0.055), with those in the deep soil moisture (Cv = 0.117) being smaller. The soil moisture content was significantly altered following the cessation of rainfall, where the initial and average moisture content, and the ACR of the soil increased with higher rainfall intensities. The ACR was positively correlated with Ta (γ = 0.16), RH (γ = 0.46) and rainfall (γ = 0.22), but negatively correlated with Par (γ = −0.29), Vpd (γ = −0.23), and wind speed (γ = −0.01). This study provides valuable information regarding the hydrological processes of artificial forests in the middle and lower reaches of the Yangtze River.

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Effects of moss layers on the spatial variation in soil moisture in a Picea crassifolia forest on the north-facing slope of the Qilian Mountains

Cited by 2 publications

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Structural characteristics of the moss (bryophyte) layer and its underlying soil structure and water retention characteristics

Structural characteristics of the moss (bryophyte) layer and its underlying soil structure and water retention characteristics

Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta Region

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