Seasonal variations in the influence of vegetation cover on soil water on the loess hillslope
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http://jms.imde.ac.cn https://doi.org/10.1007/s11629-019-5942-5
Seasonal variations in the influence of vegetation cover on soil water on the loess hillslope SHEN Ming-shuang1,2 ZHANG Jian-jun1,2*
https://orcid.org/0000-0002-7135-9542;
ZHANG Shou-hong1,2 ZHANG Hai-bo1,2 SUN Ruo-xiu1,2
https://orcid.org/0000-0001-7195-6649; e-mail: [email protected] e-mail: [email protected]
https://orcid.org/0000-0002-8914-2421; e-mail: [email protected]
https://orcid.org/0000-0001-7822-001X; e-mail: [email protected] https://orcid.org/0000-0002-4160-8499; e-mail: [email protected]
ZHANG Yi-zhou1,2
https://orcid.org/0000-0002-7565-1364; e-mail: [email protected]
*Corresponding author 1 School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China 2 National Station for Forest Ecosystem Research in Ji County, Ji County 042200, Shanxi Province, China Citation: Shen MS, Zhang JJ, Zhang SH, et al. (2020) Seasonal variation of the influence of vegetation cover on soil water on the loess hillslope Journal of Mountain Science 17. https://doi.org/10.1007/s11629-019-5942-5
© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract: Soil water is the key factor that restricts the restoration of the local ecological systems in the Loess Plateau of China. Studying the effects of vegetation types on soil water and its seasonal variation helps to understand hydrological characteristics and provides insights into the sustainable restoration of vegetation. Therefore, the Caijiachuan watershed was chosen as the research object to investigate the water status of a 0-10 m soil layer under different vegetation types including Pinus tabulaeformis, Robinia pseudoacacia, Platycladus orientalis, apple orchard, natural forestland, farmland and grassland. By comparing the difference between soil water of different land use types and that of grassland during the same period, the seasonal changes of soil water status of different types were judged. The results show that (1) in the 0-10 m soil layer, the largest value of soil water content was in the 0.3-0.4 m layer, and the lowest was in the 5.6-5.8 m layer. The depths at which the vegetation cover influenced the soil water were up to 10 m; (2) among summer, fall and spring, the soil water storage was Received: 12-Dec-2019 Revised: 22-Jun-2020 Accepted: 07-Jul-2020
the highest in the fall. In addition, the lowest value of relative accumulation was in the fall, which was the period in which the soil water recovered; (3) the soil water in the 0-10 m layer was in a relatively deficient state in the artificial forestlands, apple orchards and native forestlands, while the relative accumulation was in the farmland. In addition, the relative deep soil layers (8-10 m) had more serious deficits in the areas in which P. tabulaeformis, R. pseudoacacia and the apple orchard grew; (4) during the study period, the farmland in the summer had the largest relative accumulat
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