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[1]FENG Wei,LI Wei,YANG Wenbin,et al.Dynamic Response of Soil Moisture to Rainfall in the Pinus sylvestris var. mongolica Sand Fixation Forest of Mu Us Sandy Land[J].Research of Soil and Water Conservation,2019,26(03):101-107.

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Dynamic Response of Soil Moisture to Rainfall in the Pinus sylvestris var. mongolica Sand Fixation Forest of Mu Us Sandy Land

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 03 Page number: 101-107 Column: Public date: 2019-04-12

Title:: Dynamic Response of Soil Moisture to Rainfall in the Pinus sylvestris var. mongolica Sand Fixation Forest of Mu Us Sandy Land

Author(s):: FENG Wei¹, LI Wei², YANG Wenbin², WU Lili²; 1. Xilingol Vocational College, Xilinhot, Inner Mongolia 026000, China;
2. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China

Keywords:: Mu Us sandy land; Pinus sylvestris var.mongolica sand fixation forest; soil volumetric water content; rainfall infiltration; dynamic response

CLC:: S152.7;S727.23

DOI:: -

Abstract:: To investigate dynamic response of soil water content to rainfall in the Pinus sylvestris var. mongolica sand fixation forest of Mu Us sandy land in the semi-arid area. AV-3665R-type rain sensor, ECH₂O-5 soil moisture sensor and logger of deep soil water leakage were used to monitor rainfall, soil water in 0-200 cm layer and leakage below 200 cm depth from May to October in 2013, 2014. The results showed that cumulative rainfall significantly (p<0.01) affected soil moisture in 0-200 cm layer, the rainfall in May and June had little effect on the soil layer below 150 cm depth and the effect of rainfall after September on soil water supply was significant; less than 45.2 mm rainfall had no direct recharge to the soil layer below 150 cm depth, more than 53.8 mm rainfall had a recharge effect on the soil moisture of the 200 cm layer, and when the initial surface water content was high, the rainfall infiltration was fast, the duration time was short, and the recharge effect was significant. Soil water infiltration process and characteristics of Pinus sylvestris var. mongolica sand fixation forest were significantly affected by rainfall and initial surface soil water content.

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