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[1]HE Shuai,WANG Xiaojiang,HONG Guangyu,et al.Effect of Rainfall on Characteristics of Soil Water Dynamic in Caragana Microphylla Sand Fixation Forest[J].Research of Soil and Water Conservation,2020,27(05):106-112.

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Effect of Rainfall on Characteristics of Soil Water Dynamic in Caragana Microphylla Sand Fixation Forest

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 27 Number of periods: 2020 05 Page number: 106-112 Column: 目次 Public date: 2020-08-20

Title:: Effect of Rainfall on Characteristics of Soil Water Dynamic in Caragana Microphylla Sand Fixation Forest

Author(s):: HE Shuai¹, WANG Xiaojiang², HONG Guangyu^2,3, ZHANG Chengfu¹, LI Zhuofan², LI Zihao², GAO Xiaowei²; (1.College of Desert Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010010, China; 2.Institute of Forestry Science of Inner Mongolia Autonomous Region, Hohhot 010010, China; 3.College of Grassland and Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010010, China)

Keywords:: Caragana korshinskii Kom.; soil moisture content; rainfall infiltration; Mu Us Desert

CLC:: S152.7

DOI:: -

Abstract:: In order to explore the response of soil moisture in sand dunes of Caragana korshinskii forest to rainfall in semi-arid area, the monitoring of soil moisture in 0—110 cm layer and rainfall in 2019 in Artificial Caragana korshinskii forest in Mu Us sandy land was carried out simultaneously by using watchdog soil moisture sensor and HOBO small automatic weather station, and the dynamic change of soil moisture and rainfall infiltration characteristics of sand dunes were analyzed. The results show that from May 1 to September 15, 2019, the change of water content in different layers of sand dunes in Caragana forest was affected by rainfall, cumulative rainfall and rainfall infiltration effect; The soil moisture content in 0—50 cm layer was more sensitive to rainfall; the accumulated rainfall of 46 mm could supply the soil moisture of 110 cm layer; when the rainfall is less than 5 mm, the wetting depth is less than 5 cm; when the rainfall is about 10 mm, the wetting depth is less than 30 cm; when the rainfall is about 20 mm, the wetting depth is 30—50 cm; when the rainfall is 30 mm, the wetting depth is more than 50 cm; when the rainfall is 46 mm, the wetting depth can reach 110 cm soil layer, which indicates that rainfall is related to lime; the water status of sand dunes in tiaojianerlin has a supply function, but the supply ability to the soil moisture status below 90 cm is limited; when the rainfall is basically the same, the rainfall intensity and the initial soil moisture content have a significant impact on the infiltration depth and process, that is, the greater the rainfall intensity is, the higher the initial soil moisture content is, the deeper the rainfall infiltration depth is, and the shorter the infiltration duration is.

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Last Update: 2020-08-25