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

Rainfall is an indispensable link in the atmospheric water cycle, which plays a critical role in forest hydrology. <i>Quercus acutissima</i> and <i>Cunninghamia lanceolata</i> are two fast-growing and economically important tree species in the middle and lower reaches of the...

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Main Authors: Xin Liu, Yingzhou Tang, Xuefei Cheng, Zhaohui Jia, Chong Li, Shilin Ma, Lu Zhai, Bo Zhang, Jinchi Zhang
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/13/7/914
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author Xin Liu
Yingzhou Tang
Xuefei Cheng
Zhaohui Jia
Chong Li
Shilin Ma
Lu Zhai
Bo Zhang
Jinchi Zhang
author_facet Xin Liu
Yingzhou Tang
Xuefei Cheng
Zhaohui Jia
Chong Li
Shilin Ma
Lu Zhai
Bo Zhang
Jinchi Zhang
author_sort Xin Liu
collection DOAJ
description Rainfall is an indispensable link in the atmospheric water cycle, which plays a critical role in forest hydrology. <i>Quercus acutissima</i> and <i>Cunninghamia lanceolata</i> 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 (P<sub>ar</sub>), air temperature (T<sub>a</sub>), relative air humidity (RH), vapor pressure deficits (V<sub>pd</sub>), rainfall, and wind speed. The results revealed that variations in the soil moisture content during summer (<i>C<sub>v</sub></i> = 0.231) and autumn (<i>C<sub>v</sub></i> = 0.0.170) were greater than during spring (<i>C<sub>v</sub></i> = 0.0.092) and winter (<i>C<sub>v</sub></i> = 0.0.055), with those in the deep soil moisture (<i>C<sub>v</sub></i> = 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 T<sub>a</sub> (γ = 0.16), RH (γ = 0.46) and rainfall (γ = 0.22), but negatively correlated with P<sub>ar</sub> (γ = −0.29), V<sub>pd</sub> (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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spelling doaj.art-adb48b22977e4ee9aa6b39fd8e77ca752023-11-21T13:03:03ZengMDPI AGWater2073-44412021-03-0113791410.3390/w13070914Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta RegionXin Liu0Yingzhou Tang1Xuefei Cheng2Zhaohui Jia3Chong Li4Shilin Ma5Lu Zhai6Bo Zhang7Jinchi Zhang8Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, ChinaCo-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, ChinaCo-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, ChinaCo-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, ChinaCo-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, ChinaCo-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, ChinaDepartment of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078, USADepartment of Natural Resource Ecology and Management, Oklahoma State University, Stillwater, OK 74078, USACo-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, ChinaRainfall is an indispensable link in the atmospheric water cycle, which plays a critical role in forest hydrology. <i>Quercus acutissima</i> and <i>Cunninghamia lanceolata</i> 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 (P<sub>ar</sub>), air temperature (T<sub>a</sub>), relative air humidity (RH), vapor pressure deficits (V<sub>pd</sub>), rainfall, and wind speed. The results revealed that variations in the soil moisture content during summer (<i>C<sub>v</sub></i> = 0.231) and autumn (<i>C<sub>v</sub></i> = 0.0.170) were greater than during spring (<i>C<sub>v</sub></i> = 0.0.092) and winter (<i>C<sub>v</sub></i> = 0.0.055), with those in the deep soil moisture (<i>C<sub>v</sub></i> = 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 T<sub>a</sub> (γ = 0.16), RH (γ = 0.46) and rainfall (γ = 0.22), but negatively correlated with P<sub>ar</sub> (γ = −0.29), V<sub>pd</sub> (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.https://www.mdpi.com/2073-4441/13/7/914rainfallsoil moisture contentenvironmental factorsACR of soil moisture contentYangtze River Delta regionTong Shan forest farm
spellingShingle Xin Liu
Yingzhou Tang
Xuefei Cheng
Zhaohui Jia
Chong Li
Shilin Ma
Lu Zhai
Bo Zhang
Jinchi Zhang
Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta Region
Water
rainfall
soil moisture content
environmental factors
ACR of soil moisture content
Yangtze River Delta region
Tong Shan forest farm
title Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta Region
title_full Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta Region
title_fullStr Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta Region
title_full_unstemmed Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta Region
title_short Comparison of Changes in Soil Moisture Content Following Rainfall in Different Subtropical Plantations of the Yangtze River Delta Region
title_sort comparison of changes in soil moisture content following rainfall in different subtropical plantations of the yangtze river delta region
topic rainfall
soil moisture content
environmental factors
ACR of soil moisture content
Yangtze River Delta region
Tong Shan forest farm
url https://www.mdpi.com/2073-4441/13/7/914
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